BMW E90/E91/E92/E93 Body Kit Fitment Guide: Body Code, LCI Window, and Part-Level Compatibility
BMW E90/E91/E92/E93 Body Kit Fitment Guide: Body Code, LCI Window, and Part-Level Compatibility
Written by Dmitrii Podobriaev, founder of Body Kit Online Store. 20+ years in structural composites, originally from marine construction. Automotive manufacturing since 2013. Fitment data in this guide is compiled from 3D scans of original BMW body panels, production records, and customer orders across all four E9X body codes.
Published: June 2026 | Last updated: June 2026 | Reading time: 14 min Applies to: BMW E90 sedan (Dec 2004–Oct 2011), E91 Touring (Sep 2005–May 2012), E92 coupé (Jun 2006–Jun 2013), E93 convertible (Dec 2006–Oct 2013)
Quick answer: BMW E9X body kit fitment is determined by four factors: body code (E90, E91, E92, or E93), LCI window (pre-LCI or LCI, with the cutoff at September 2008 for E90/E91 and 2011 model year for E92/E93), body variant (standard, M3, 335is, or M3 GTS), and part location (front-end parts share within shared pairs, rear bodywork is body-code specific to all four). E90 and E91 share their entire front-end structure. E92 and E93 share their entire front-end structure. Nothing crosses between the two pairs at the front, and no rear bodywork transfers between any of the four codes. Body Kit Online Store stocks separately for each body code, each LCI window, and the M3 body variant.
The BMW E90/E91/E92/E93 body kit buyer's guide covers which body code to order for and what FRP and carbon fibre kits are available. This guide goes one level deeper: whether a specific part fits your specific car, and what to check before the order is placed.
The central fact is that "E9X" is not a single fitment window. The fifth-generation 3 Series is four structurally distinct cars sold under one model name, split further by a mid-cycle facelift that arrived at different dates for the sedan/Touring pair and the coupé/convertible pair, and split again by an M3 body variant that diverges from the standard cars at every panel. Wrong body code at the rear, or wrong LCI side at the front, and the panel either sits proud of its mounting points or fouls a headlight aperture that moved during the facelift. The buyer's guide tells you which body code to order. This guide tells you which side of the LCI line you are on and whether your variant uses the standard body or the M3 body.
The Three-Step Fitment Check
Ordering a BMW E9X body kit part correctly requires three pieces of information.
Step 1: Body code. The body code identifies which of the four E9X variants you have: E90 sedan, E91 Touring, E92 coupé, or E93 convertible. All four share a 2,760 mm wheelbase but use four different body structures. Parts do not cross the E90/E91 pair to the E92/E93 pair at the front, and no rear bodywork transfers between any of the four codes. The body code is identified by body style and by the model code printed on the driver-side B-pillar sticker.
Step 2: LCI window. "LCI" stands for Life Cycle Impulse, BMW's term for the mid-cycle facelift. The E90 and E91 received their LCI in September 2008. The E92 and E93 received theirs for the 2011 model year. The LCI changed the headlight clusters, front bumper mounting tab geometry, and the rear light apertures. Some front-end body kit parts are produced in both pre-LCI and LCI variants and the wrong-side part will not align. The compliance plate or production sticker confirms the build month.
Step 3: Body variant. The E90 M3, E92 M3, and E93 M3 carry a chassis-specific M3 body that differs from the standard variants at the front bumper, the front fenders (widened), the bonnet (powerdome with cooling vents), and the rear quarter flaring. M3 body kit panels do not interchange with standard E90, E92, or E93 panels at any of these locations. The E92 M3 GTS adds another layer with a 4.4-litre S65B44 and factory carbon bodywork that does not share at the rear with the standard M3 due to the GTS-specific cage and bulkhead. The standard 335i, 335is, and N/A variants all share the standard body of their body code, regardless of engine.
E90 Sedan and E91 Touring
The E90 and E91 share their entire front-end structure. Any front bumper, front bumper lip, bonnet, front fender, front fender arch flare, headlight aperture trim, or side skirt manufactured for the E90 transfers directly to the E91 without modification. This applies across both LCI windows: a pre-LCI E90 front bumper fits a pre-LCI E91, and an LCI E90 front bumper fits an LCI E91.
The two diverge at the rear. The E90 sedan has a notchback profile with a defined boot and a body-mounted rear bumper. The E91 Touring has a wagon profile with a longer roof line, a separate D-pillar, and tailgate-integrated rear bumper geometry. The rear bumper, rear quarter arch extensions, boot lid spoiler, rear diffuser, and roof spoiler are all body-code specific. An E90 rear bumper does not fit an E91 Touring, and the E91 tailgate-mounted roof spoiler is not the same component as an E90 boot lid spoiler.
LCI cutoff for E90 and E91: September 2008. Cars built before September 2008 take pre-LCI parts. Cars built September 2008 or later take LCI parts. The pre-LCI headlight cluster has a halo ring with a sharper bottom edge. The LCI cluster has a continuous LED accent strip across the lower edge. Front bumper aperture and headlight back-housing are dimensioned together: an LCI bumper with pre-LCI lights produces a visible gap at the outer corner, and the mismatch is not correctable with adjustment.
E90 sedan is the wide-body lead in this pair. WTCC-style overfender designs reference the 320si homologation car, built in approximately 2,600 units for the 2006 to 2009 World Touring Car Championship. The four-door sedan proportions carry additional arch width without the visual heaviness that the Touring takes on when widened. The E91 Touring is the rarest wide-body subject in the catalog but the easiest to source: front bumper, bonnet, front fenders, and front arch flares are the same components used on E90 wide-body kits. Only the rear bumper and roof spoiler are Touring-specific.
Wheel and offset planning. Wide-body fitment on the E90 typically runs 18x9.5 to 19x9.5 wheels with ET offsets between +22 and +35, depending on suspension setup and whether the inner arch is rolled. Confirm wheel and offset before ordering arch flares. The flare width determines the maximum negative offset and the inner arch clearance required at full lock and full compression.
E92 Coupé and E93 Convertible
The E92 and E93 share their entire front-end structure. Any front bumper, front bumper lip, front canard pair, bonnet, front fender, front fender arch flare, or side skirt manufactured for the E92 transfers directly to the E93 without modification. This holds across both LCI windows: a pre-LCI E92 front bumper fits a pre-LCI E93, and an LCI E92 front bumper fits an LCI E93.
The two diverge at the rear. The E92 carries a fixed coupé roof and a rigid rear bulkhead. The E93 carries the three-piece retractable hardtop mechanism, which changes the rear quarter geometry, the boot lid pivot location, and the rear bumper interface. The rear bumper, rear quarter arch extensions, boot lid, and rear diffuser are all body-code specific. An E92 boot lid does not fit an E93 because the E93 boot lid is replaced functionally by the retractable hardtop assembly.
LCI cutoff for E92 and E93: 2011 model year. Cars built before the 2011 model year take pre-LCI parts. Cars built model year 2011 or later take LCI parts. The same headlight cluster visual cue applies: pre-LCI has the halo ring with the sharper bottom edge, LCI has the continuous LED accent strip across the lower edge.
The E92 is the primary wide-body platform in the E9X family. The E92 M3 coupé is the lead build subject internationally, followed by the standard E92 coupé. The E93 is less commonly modified due to the convertible roof mechanism limiting practical track use, but the same E92 front-end kits transfer directly. The weight difference between the two body codes is significant: an E92 M3 weighs about 1,675 kg, the E93 M3 about 1,810 kg, a 135 kg gap concentrated above the rear axle from the retractable hardtop mechanism.
E92 carbon roof panel: structural component, coupé only. The E92 carbon roof replaces the painted steel roof and saves approximately 5 kg above the centre of gravity. On a coupé where the roof is a load-bearing member, that mass reduction produces a measurable handling improvement. It is not applicable to the E93, where the roof structure is the folding hardtop mechanism and there is no fixed roof panel to replace.
The M3 Body: A Separate Catalogue
The E90 M3 sedan, the E92 M3 coupé, and the E93 M3 convertible all carry the S65B40 4.0-litre naturally aspirated V8 and a chassis-specific M3 body. The M3 body diverges from the standard E90, E92, and E93 at four locations:
Front bumper: M3-specific aperture and mounting geometry to clear the wider front track.
Front fenders: widened from the factory to cover the wider front track. The M3 fender is not a flare added to a standard fender. It is a full panel replacement with the flare moulded in.
Bonnet: powerdome with two cooling vents, distinct from the flat bonnet on the standard variants.
Rear quarters: flared from the factory to cover the wider rear track. The M3 rear quarter panel is a full panel, not a bolt-on overlay.
M3 body kit panels are produced for the M3 body. They do not interchange with standard E90, E92, or E93 panels at any of the four locations. Conversely, a standard E92 wide-body arch flare kit does not fit an E92 M3 because the factory M3 fender already carries the flare and the kit is designed to add the flare to a flat fender.
There is no E91 M3. The Touring body was never built as an M3. Owners modifying an E91 Touring to M3 aesthetic style use the standard E91 body with appearance parts that approximate the M3 look but do not change the underlying panel structure.
E92 M3 GTS: separate again. The E92 M3 GTS was built in approximately 150 units in 2010 with an S65B44 4.4-litre V8 (450 PS, 440 Nm against the standard M3's 420 PS and 400 Nm), weight reduced to approximately 1,530 kg through removal of the rear seat, air conditioning, and audio system, and factory carbon fibre body panels including the boot lid. GTS replacement kits, where available, are carbon-only and produced to order. The GTS is not a standard buyer's guide subject. Standard E92 M3 panels do not transfer to the GTS at the rear due to the GTS-specific cage and rear bulkhead.
M3 CRT. The M3 CRT (Carbon Racing Technology) is a small-run E90 M3 sedan variant with the S65B44 and factory carbon roof, bonnet, and front splitter. Body geometry is the same as the standard E90 M3; the carbon panels are factory parts, not aftermarket kit components.
335is is not an M3. The 335is is an E92 coupé or E93 convertible only, built for the 2011 to 2012 model years with an uprated N54B30T0 producing 326 PS and 440 Nm. Approximately 4,500 units were sold in North America. The 335is uses standard E92/E93 LCI bodywork with M-Sport bumpers. Body kit fitment matches the standard E92 or E93 LCI window. The 335is does not need M3-specific body kit parts.
How to Identify Your Body Code, LCI Window, and Variant
There is no single character in the VIN that maps directly to E90, E91, E92, or E93. The reliable identifiers are visual and documentary.
By body style. Four doors with a fixed roof is E90. Five-door estate with roof rails is E91. Two-door coupé with frameless windows is E92. Two-door with a three-piece folding hardtop is E93.
By driver-side B-pillar model code. US-market examples carry a four-character model code on the B-pillar sticker. VA-series confirms E90 sedan. VS-series confirms E91 Touring. WA or WB-series confirms E92 coupé. WL-series confirms E93 convertible. European registration documents list the body code directly as "E90," "E91," "E92," or "E93" in the type-approval field.
By build month for LCI window. The compliance plate or production sticker shows the build month and year. For E90 and E91, the cutoff is September 2008: earlier is pre-LCI, September 2008 or later is LCI. For E92 and E93, the cutoff is the start of the 2011 model year: earlier is pre-LCI, 2011 model year or later is LCI. Build months in the transition windows (August or September 2008 for E90/E91; late 2010 for E92/E93) require visual confirmation, since model year and production month can straddle the cutoff differently in different markets.
By visual headlight cue for LCI confirmation. The headlight is the fastest visual identifier. Pre-LCI clusters have a halo ring with a sharper bottom edge. LCI clusters have a continuous LED accent strip across the lower edge. A clear photograph of one headlight resolves any borderline build-month case.
By front fender shape for M3 confirmation. The M3 front fender carries an integrated flare from the door shut line forward to the front bumper. A standard E90, E92, or E93 fender is flat at the same location. If the front fender has a visible flare from the factory, the car is an M3 and requires M3-specific body kit parts.
Part-Type Fitment Notes
Different part types carry different fitment requirements even within the same body code and LCI window.
Front bumpers. Full panel replacements, body-code-paired (E90/E91 share, E92/E93 share) and LCI-split. The bumper aperture is dimensioned together with the headlight back-housing: pre-LCI bumper with pre-LCI lights, LCI bumper with LCI lights. Mixing pre-LCI lights into an LCI bumper produces a visible gap at the outer corner. The mismatch is geometric, not a tolerance issue, and cannot be closed with adjustment. M3 bumpers are M3-specific.
Front bumper lips. Bolt-on or adhesive-mounted additions to the front bumper lower edge. The lip mounts to the bumper face, not the chassis, so bumper fitment is the primary constraint. Pre-LCI bumper takes pre-LCI lip; LCI bumper takes LCI lip. The lip cannot be shared across the LCI line because the bumper face curvature changed at the facelift.
Front canards. Carbon fibre pair mounted to the front bumper outer corners. Shared across the body-code pair but split by LCI window because the bumper corner geometry changed. M3 bumpers take a different canard than standard bumpers.
Bonnets. Full panel replacement. Shared within each body-code pair (E90/E91 use the same bonnet; E92/E93 use the same bonnet). Bonnets are not LCI-split: the bonnet shutline and hinge points did not change at the facelift on either pair. The M3 powerdome bonnet is M3-specific and does not interchange with the standard bonnet. The OEM hinges transfer to the FRP or carbon replacement.
Bonnet vents. Drop-in additions to a standard or modified bonnet. Most bonnet vents are universal within the body-code pair and are surface-mounted to the bonnet face. Confirm the bonnet face panel before ordering: the M3 bonnet already carries factory cooling vents and does not take an aftermarket vent.
Front fender arch flares. Bolt-on or bonded extensions to the standard front fender. Shared within the body-code pair. Arch cutting on the fender is required to clear the wider track. Plan wheel and offset before ordering: the flare width determines the maximum negative offset and the inner arch clearance required. Front arch flares are not compatible with the M3 body because the M3 fender already carries the factory flare.
Front fender replacements. Full panel with integrated arch. Shared within the body-code pair. These replace the OEM steel fender entirely and use the OEM mounting points. Dry-fit before paint, since FRP panel thickness affects close geometry at the door shut line and bonnet edge.
Side skirts. Full rocker length. Shared within the body-code pair. No arch cutting required. The skirt bonds and clips to the rocker panel sill. Before bonding, inspect the inner sill condition. On a 12- to 20-year-old E9X car, corroded inner sill metal reduces the adhesive bond. Treat any rust and confirm structural integrity before the skirt goes on.
Rear quarter arch extensions. Bolt-on or bonded extensions to the rear quarter panel. Body-code specific (E90 sedan, E91 Touring, E92 coupé, E93 convertible are all different). Arch cutting is required. E92/E93 rear quarter arch cutting is more involved than E90/E91 due to the proximity of the rear light cluster and the inner wheel well structure. Confirm the desired overhang extent before ordering: incorrect arch cuts cannot be reversed.
Rear bumpers. Full panel replacements. Body-code specific. The E92 and E93 rear bumpers differ at the boot or hardtop interface and do not interchange even though the front bumpers do. M3 rear bumpers carry the rear quarter flare interface and are M3-specific.
Boot lid spoilers and boot lids. E90 and E92 take boot lid spoilers. E91 takes a tailgate-mounted roof spoiler instead. E93 does not take a boot lid spoiler component because the retractable hardtop replaces the fixed boot lid function. M3-style ducktail boot lid is M3-specific in the panel-replacement variant; the surface-mount spoiler version fits the standard E90 or E92 boot lid.
Rear diffuser inserts. Mount to the rear bumper lower edge. Body-code specific because the rear bumper is body-code specific. M3 rear bumpers take a different diffuser than standard bumpers.
E92 carbon roof panel. Vacuum-infused carbon fibre replacement for the steel roof. E92 coupé only. Does not fit the E90 sedan, the E91 Touring, or the E93 convertible. The E93 has no fixed roof panel to replace.
Pre-Order Confirmation Process
Before placing an order for any E9X body panel or trim part, send two photographs to Body Kit Online Store.
Photograph 1: The B-pillar sticker. Open the driver-side front door and photograph the white sticker on the B-pillar. The four-character model code on this sticker confirms the body code (VA-series E90, VS-series E91, WA or WB-series E92, WL-series E93). The same sticker also carries the build month and year, which confirms the LCI window. One photograph answers two of the three fitment questions.
Photograph 2: Front three-quarter of the car. A photograph from the front corner at approximately a 45-degree angle confirms the body style, the headlight cluster (pre-LCI halo or LCI LED accent), and whether the front fender carries an integrated factory M3 flare. This is the fastest visual confirmation of the LCI window and the M3 variant question.
For borderline build months in the LCI transition windows (August or September 2008 for E90/E91; late 2010 for E92/E93), the visual headlight cue from photograph 2 is the deciding evidence. The photograph confirms which physical bumper and headlight pair is on the car right now, regardless of how the model year was registered.
Contact routes: Telegram, Messenger, WhatsApp, or email. Full product range by body code at the BMW E90/E91/E92/E93 body kit hub.
Common Fitment Mistakes
Using model year instead of build month for LCI. A 2008 E90 can be pre-LCI (built January through August 2008) or LCI (built September through December 2008). A "2008 E90" listing without the build month does not specify the LCI window. Check the build month on the B-pillar sticker. The September 2008 cutoff applies to the production date, not the registration date.
Ordering an E90 sedan rear bumper for an E91 Touring. The two share the entire front-end structure but no rear bodywork. The E90 rear bumper has a notchback profile that does not match the E91 tailgate-integrated geometry. The same applies in reverse: an E91 tailgate-mounted roof spoiler is not the same component as an E90 boot lid spoiler.
Buying M3 fender flare overlays for a non-M3 chassis. The M3 fender flare is a full factory panel, not an overlay. Standard E90, E92, or E93 chassis takes a flat fender. An M3-style appearance build on a non-M3 chassis uses either a full E90/E92 wide-body fender replacement with integrated arch flare or a bolt-on arch flare that adds width to the standard fender. Buying M3 panels for a non-M3 chassis produces panels that do not align at the door shut line and bumper corner.
Mixing pre-LCI headlights into an LCI bumper, or vice versa. The bumper aperture and headlight back-housing are dimensioned together. The fastener pattern is compatible across LCI, but the geometry is not. A pre-LCI to LCI conversion requires both the LCI bumper and the LCI headlight clusters as a matched pair, and the same is true in reverse.
Ordering standard E92 rear quarter arch extensions for an E92 M3. The M3 rear quarter is already flared from the factory. Bolt-on arch extensions designed to widen a flat E92 rear quarter overlap with the existing M3 flare and produce a stepped seam where they meet. The M3 takes M3-specific wider rear quarter overlays or full panel replacements only.
Ordering an E92 boot lid for an E93. The E93 does not have a fixed boot lid in the conventional sense; the retractable hardtop occupies the same volume. The E92 boot lid panel, including M3-style ducktail boot lids, is not interchangeable with E93.
Confusing the 335is with the M3 for body kit purposes. The 335is is a 335i body with M-Sport bumpers, not an M3 body. It takes standard E92 or E93 LCI body kit parts and not M3 panels. Approximately 4,500 units exist in North America and a smaller number internationally.
Assuming xDrive changes body kit fitment. xDrive adds a front differential and driveshaft routing internally and does not change the body structure or panel attachment points. RWD and xDrive variants of the same body code take identical body kit panels. The only fitment consideration is that some market variants of xDrive carry a slightly different front hub offset, which can affect front wheel clearance inside widened arches. Confirm wheel offset before ordering wider front wheels, not body panels.
Sending a VIN screenshot instead of the B-pillar sticker. The VIN encodes the chassis platform but does not directly identify the body code in a way that is reliable across all market production codes. The B-pillar model code (VA, VS, WA, WB, WL) is the authoritative reference.
Ordering and Delivery
Hardware (bolts, panel clips, rivets, and panel adhesive) is not included with any E9X body kit part and must be sourced locally before installation begins. Replacement bumpers ship with the correct mounting tab geometry; the fasteners themselves come from the builder's parts supply. BMW front bumper mounting on the E90/E91 uses different fastener spacing from the E92/E93. Both use BMW-standard panel clips that are sourced through any BMW parts catalogue or aftermarket supplier.
FRP production is approximately two weeks from order confirmation. Carbon fibre components take longer depending on panel complexity and current vacuum-infusion queue. Allow four to six weeks total from order placement to installation start for most international destinations.
International freight is included in the listed price. UK and EU delivery is 7 to 20 days from dispatch; USA and Canada is 10 to 20 days; Japan, Australia, New Zealand, Southeast Asia, and all other destinations are 9 to 20 days.
How do I identify my BMW 3 Series body code? Body style and the driver-side B-pillar model code confirm it. Four doors with a fixed roof is E90. Five-door estate is E91. Two-door coupé with frameless windows is E92. Two-door with a three-piece folding hardtop is E93. The B-pillar sticker carries a four-character model code: VA-series for E90, VS-series for E91, WA or WB-series for E92, WL-series for E93. European registration documents list the body code directly in the type-approval field.
Where do I find the build month for LCI confirmation on a BMW E9X? The B-pillar sticker on the driver-side door jamb carries the build month and year. The compliance plate in the engine bay also shows the production date. For E90 and E91, the LCI cutoff is September 2008. For E92 and E93, the cutoff is the start of the 2011 model year. Cars in the transition windows benefit from a visual headlight check: pre-LCI clusters have a halo ring with a sharper bottom edge, LCI clusters have a continuous LED accent strip across the lower edge.
Will an E90 sedan body kit fit an E92 coupé? No. The E90/E91 pair shares one front-end structure and the E92/E93 pair shares a different front-end structure. The two pairs do not interchange at the front. No rear bodywork transfers between any of the four body codes. Order by body code.
Will an E90 sedan front bumper fit an E91 Touring? Yes. The E90 and E91 share their entire front-end structure including front bumper mounting, bonnet, front fenders, and headlight apertures. All front-end kit components transfer between the two without modification within the same LCI window. The rear bumpers, rear quarter panels, boot lid spoilers, and Touring roof spoiler are not interchangeable.
Will an E92 coupé front bumper fit an E93 convertible? Yes. The E92 and E93 share their entire front-end structure. Any front bumper, front bumper lip, bonnet, front fender, side skirt, or front fender arch flare produced for the E92 transfers to the E93 within the same LCI window. The rear bumper, rear quarter arch extensions, boot lid, and rear diffuser do not transfer.
Does the LCI facelift affect body kit fitment? Yes, at the front bumper and headlight aperture. The E90 and E91 received their LCI in September 2008; the E92 and E93 received theirs for the 2011 model year. LCI bumpers carry different mounting tab geometry and a different headlight aperture from pre-LCI bumpers. Front bumpers, front bumper lips, and front canards are LCI-split. Bonnets, side skirts, and front fender arch flares are not LCI-split because the panels they mount to did not change at the facelift.
Do I need M3-specific body kit parts if I have an E92 335i? No. The 335i uses the standard E92 body. M3-specific body kit panels do not fit the 335i. The M3 fender, M3 front bumper, M3 powerdome bonnet, and M3 rear quarter flare are designed for the wider M3 track and do not align on the standard E92 chassis. Order standard E92 panels (and select an LCI window based on your 335i's build month).
Can I install M3 fenders on a standard E90, E92, or E93? No. The M3 fender is a full factory wide panel with an integrated flare. The standard E90, E92, or E93 chassis is dimensioned for a flat fender. Mounting an M3 fender to a standard chassis produces a panel that does not align at the door shut line or the bumper corner. For an M3-style appearance build on a standard chassis, order full wide-body front fender replacements or bolt-on arch flares designed for the standard chassis.
Does xDrive affect body kit fitment? No. xDrive adds a front differential and driveshaft routing but does not change the body structure, panel attachment points, or wheel arch geometry. Body kits fit identically on RWD and xDrive variants of the same body code. xDrive front hubs sit at a slightly different track width on some market variants, which can affect front wheel clearance inside widened arches. Confirm wheel offset specifications for your specific variant before ordering wider front wheels.
Are 335i and 335is body kits interchangeable? Yes, within the same body code and LCI window. The 335is is a 335i body with M-Sport bumpers, factory only in E92 coupé and E93 convertible for the 2011 to 2012 model years. It uses standard E92/E93 LCI body kit parts. The N54B30T0 in the 335is is internal and does not affect the bumper, bonnet, or fender geometry.
Will an E92 carbon roof panel fit a 335i, or only an M3? The E92 carbon roof fits any E92 coupé with the standard fixed steel roof, including the 335i, 335is, M3, and all N/A variants. It is not body-variant specific within the E92. It does not fit the E93 (no fixed roof panel), the E90 sedan, or the E91 Touring. Roof shape and mounting points are E92-specific.
Can I use an E93 rear bumper on an E92 or vice versa? No. The E92 rear bumper is dimensioned for the fixed coupé boot interface. The E93 rear bumper is dimensioned for the retractable hardtop assembly interface. The two are not interchangeable even though both are two-door E9X variants.
Is there an E91 M3 Touring? No. The Touring body was never built as an M3. Owners modifying an E91 Touring to M3 aesthetic style use the standard E91 body with appearance parts that approximate the M3 look. The underlying panel structure is the standard E91.
Do standard M3 kits fit the E92 M3 GTS? Front-end M3 kits fit the M3 GTS. Rear-end kits do not, because the GTS uses a chassis-specific cage and rear bulkhead with factory carbon bodywork including the boot lid. GTS replacement kits, where available, are carbon-only and produced to order. The GTS is a small-run platform (approximately 150 units in 2010) with a specialist aftermarket.
What photos should I send to confirm BMW E9X fitment before ordering? Two photographs: one of the driver-side B-pillar sticker showing the four-character model code and build date, and one of the front three-quarter of the car showing the headlight cluster and front fender shape. These two images confirm body code, LCI window, and M3 variant together. Send them via Telegram, Messenger, WhatsApp, or email before placing an order on any borderline fitment case.
What is the difference between an M3-style boot lid spoiler and an M3-specific boot lid? The M3-style boot lid spoiler is a surface-mounted accent that bonds to the standard E90 or E92 boot lid. It approximates the M3 ducktail visually without replacing the boot lid panel. The M3-specific boot lid is a full panel replacement with the ducktail moulded into the panel, designed for the M3 chassis. The two are different products with different fitment requirements. The spoiler fits the standard boot lid; the panel replacement is for M3 builds where the boot lid itself is being changed.
Sources: BMW AG production data for the E90, E91, E92, and E93 (2004–2013); Wikipedia BMW 3 Series (E90) reference for engine codes, displacement, body production windows, and LCI dates; Wikipedia BMW S65 reference for the S65B40 and S65B44 V8 specifications; BMW M GmbH archive material for the E92 M3 GTS production figures; Body Kit Online Store product pages, fitment records, and 3D-scan-derived moulds at bodykitonlinestore.pro; production and fitment data from Dmitrii Podobriaev, founder and composite engineer, Body Kit Online Store (est. 2013).