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BMW Motorsport Parts and Upgrades

M235i/M240i Racing

James Clay takes on the Nürburgring

BimmerWorld President James Clay has raced in multiple VLN, 6H and 24H races at the Nürburgring in the M235i Racing Cup, in addition to participating in other track days with customers and teams in the USA. Most M235iR cars in the USA are raced in Pirelli World Challenge, but many are now moving to club-level events. The M235iR makes a fantastic track day machine, but when rules allow (or when rules don't apply), BimmerWorld has an extensive program of M235iR upgrades, spares, and equipment to help you go faster and get the most enjoyment from your race car.

The M235iR/M240iR is built with parts from the M235i street car, E92 M3 GT4, and F82 M4 GT4 race cars. Much of the engine internals are shared with the N55 engine used in the M235i and 2016-2018 M2. The suspension arms use monoball bearings (2016 spec) with KW Competition coil overs, and the differential is from the E92 M3 GT4. The body is custom-designed using flares and extensions unique to the M235i body shell and necessary to clear the 10.0" wide wheels.

The first cars from BMW Motorsport were delivered in 2014. A 2016 Evolution package updated the suspension bushings and added a rear wing. For 2019 the car was renamed the M240i Racing to keep it aligned with the street car nomenclature but the specs remained as before with minor cosmetic and functional upgrades.

M235i Racing Parts

Click here for M235i Racing Spare Parts and Standard Parts

Here you will find parts from the BMW Motorsport catalog for the M235iR. These are Genuine parts needed to ensure compliance with rules or to maintain the original performance and spec of the factory-built car. We have extensive spare parts listed and usually with better prices, more knowledge, and an easier buying process than buying from an authorized Motorsport dealer.

M235i Racing Upgrades:

From our racing experience and talking with customers, we have several "Must Have" upgrades for a track day or club racer M235i/M240i. These are upgrades from the standard spec so check your rulebook to maintain compliance. Club racers and track enthusiasts who don't have to follow a rulebook can make significant gains in performance and speed with these upgrades and elevate the M235i from a confined spec racer into the more serious and capable race car we know it can be.

M235i Racing Suspension Upgrades The M235iR suspension is the most obvious upgrade area with the most significant gains.  The supplied KW dampers certainly work well, but their performance degrades quickly and we have found that for pro use (or maintaining a stock performance level), frequent rebuilds are required.  We have worked with Motion Control Suspension on much more compliant (wish they were 'Ring legal!) and robust racing damper packages, as well as an array of replacement arms, bushings and upgrades. 

M235i Racing Aero & Exterior Upgrades The 2016 Evo package included a rear wing for more downforce. But it's small and designed to make the car more competitive in its class, not for maximum downforce. We have several larger rear wing options that will help with high speed grip.

M235i Racing Brake Upgrades M235iR comes with either PFC or AP Racing calipers over 372mm rotors. We have a large selection of replacement pads for each caliper as well as other consumables such as PFC rotor rings, caliper rebuild kits, and fluid.

M235i Racing Cooling Upgrades Every car can use better cooling and more so on track driven turbo cars. The M235iR uses a lot of stock street car cooling hardware such as the radiator and oil cooler. We have upgrades to keep temps down and power up.

M235i Racing Driveline Upgrades Since the M235iR uses an automatic transmission and limited-slip diff there is not much to "upgrade" but we have several items that may be useful, including the factory Evo solid transmission mounts and differential rebuilds/upgrades.

M235i Racing Engine Upgrades Here you will find mostly maintenance items for the M235iR - belts, pulleys, spark plugs, ignition coils, filters, etc.

M235i Racing Engine Software Upgrades Engine software upgrades are in the works and will be released shortly.

M235i Racing Safety Upgrades We have a large catalog of universal safety items from fire systems to window nets.

M235i Racing Wheel Upgrades The M235iR uses a 18x10" wheel in the front and rear and there are plenty of light weight and strong wheel options in addition to the factory BBS wheels.

M4 GT4

BimmerWorld M4 GT4 at Mid Ohio

BimmerWorld was the most successful M4 GT4 team in North America in 2018 - providing the first podium (Daytona) and first win (Road Atlanta) for the car in North American endurance racing. We also scored seven Top 10, four Podium, and one 1st place finish in the 2018 IMSA Continental Tire Sports Car Challenge series. The M4 GT4 was a well-developed car right out of the box but significant additional work was required to make it legal and safe for IMSA racing in the USA. BimmerWorld has tested extensively before and during the season to understand the M4 better and how to make it faster within the rules. Outside of GT4 rules we can apply an arsenal of race-quality components to make the M4 faster and handle better. If you're building a M4 track car or race car, contact us with your needs so we can help. Wherever rules allow - or when rules don't apply - BimmerWorld has a burgeoning program of M4 upgrades, spares, and equipment to help you go faster and get the most enjoyment from your race car.

The M4 GT4 is built with a mix off-the-shelf M4 parts with a small number of specialized pieces, which makes sense as the GT4 class is intended for production-based road cars (very similar to Group N cars of the 1980s-1990s). The engine, transmission, suspension, and much of the body are carried over from the road car - it's actually closer in spec to a M4 GTS than you might realize. BMW modified the M4 GT4's front suspension geometry and fenders to allow 11.0" wide wheels and better aerodynamics and unfortunately these parts can't just be bolted on to upgrade a road car, but we can supply similar components that are more cost-effective and in most cases even more potent than the tightly-regulated GT4 catalog.

M4 GT4 Parts

M4 GT4 Spare Parts and Standard Parts

Contact us if you are in need of Genuine BMW Motorsport parts for M4 GT4. These are Genuine parts needed to ensure compliance with rules or to maintain the original performance and spec of the factory-built car. We have access to extensive spare parts and usually with better prices, more knowledge, and an easier buying process than buying from an authorized Motorsport dealer.

M4 Track & Racing Upgrades:

With a full year of racing the M4 under our driving suits, we have several "Must Have" upgrades for a track day or club racer M4. These are upgrades intended for dedicated track and race cars and not for street cars that spend occasional time on track. For street car upgrades, check out our other M3/M4 Project Cars by clicking here.

Other BMW Motorsport Parts

M4 GT4 Body-in-White next to BimmerWorld-OPTIMA M4 GT4

As a true BMW tuner we are also engaged at racing and track events all over the country and with multiple BMW race cars. If you're looking for Genuine BMW Motorsport parts or other racing upgrades and equipment, we want to be your source! Contact us via email or phone with your Motorsport parts needs. We usually have better prices, more knowledge, better service, and an easier ordering process than going through a Motorsport dealer.

Not all of our Motorsport parts end up on our website. If you don't see the part you're looking for please don't hesitate to call or email with your needs.

A Sampling of BMW Motorsport Parts:


PFC 11 Racing Brake Pads - PFC ZR54 Caliper (incl M235i Racing)

Performance Friction 11 compound racing brake pads - ideal for sprints and medium distance racing (PFC ZR54 calipers)

This box might have a PFC Golden Ticket inside! Read details here

Price: $379.99

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Castrol SRF Synthetic Racing Brake Fluid

Silicone-based fluid repels water, creating extremely high boiling points

Price: $74.99

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BimmerWorld TE:AL TA16 Forged Race Wheel - 18"

T6061 forged aluminum wheel - light, strong, durable, and perfect for track or race use

On Sale! 10% OFF until 8/31/19

Price: $440.99 – $449.99

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Genuine BMW M235iR Race Wheel - 18x10 ET24

Factory 18x10 flow-formed race wheel - create a square track wheel set with Genuine wheels! Genuine BMW Motorsport part #36108416558.

Price: $551.45

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Rear Cat-less Racing Exhaust, Genuine BMW - M235i Racing

Zero restriction muffler-delete rear pipes are lighter and make more power for the track. Genuine Motorsport part under BMW part #18008416477.

Price: $2,499.99

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Lifeline Novec Fire Bottle Service & Recertification

Factory-trained bottle recharge/recertification service for your Lifeline fire system

Price: $129.70

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MCS F22 / F3X / F8X 2-Way Non-Remote Damper Set

Ultra-premium double-adjustable monotube dampers with street-perfect manners and race winning performance

Price: $3,349.99

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CSF Triple-Pass 52mm Racing Radiator Upgrade - F22 M235i/iR, F3X 335i/435i M-Sport, F87 M2

Extra-thick core and Triple-Pass means three times the cooling exposure

Price: $799.00

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