MFactory 21 lb Chromoly-Nitride Single Mass Flywheel for BMW N54 135i and 335i
Unlock sharper throttle response, quicker revs and stronger acceleration with the MFactory Single Mass Flywheel for BMW N54. This 21 lb chromoly-nitride lightweight SMFW is engineered to replace the stock dual mass flywheel on the 135i and 335i, delivering a more direct connection, reduced rotational mass and improved drivability on fast road, track day and drag applications. Designed to work with the OEM or OEM-style clutch, it is the proven N54 flywheel upgrade that enthusiasts trust.
Why choose the MFactory SMFW
- Diamond cut from forged chromium-molybdenum SAE 4140 steel for strength and durability
- Proprietary nitride surface treatment for increased surface hardness and long service life
- Designed with Solidworks 3D CAD and Cosmos FEA for optimised geometry and minimal parasitic losses
- Precision balanced to over 12,000 rpm for smooth operation and reliability
- Approx. 21 lb lightweight design to reduce inertia and improve engine response
- Perfect fitment and finish for hassle-free installation with OEM or OEM-style clutch
Race transmissions built with MFactory components transfer, on average, 1 to 2% more power to the ground over competitors. Pair this with the right clutch and enjoy faster rev matching, crisper shifts and a more engaging drive from your BMW N54.
Nforcd tested and approved
We have fitted and used these MFactory flywheels on our own builds and customer cars. Feedback is consistently excellent, with customers praising the sharper throttle response, smoother engagement and improved acceleration compared to tired dual mass setups.
Recommended clutch pairing
For higher power N54 builds, we highly recommend fitting with the SPEC BMW N54 Stage 3+ clutch designed to suit the MFactory flywheel. This combination is a popular, proven upgrade for tuned 135i and 335i models.
Fitment and part numbers
MF-TRS-09E92 (8-bolt)
- BMW E82 and E88 135i 2006 to 2008
- BMW E90, E91, E92, E93 335i and 335ix 2006 to 2008
- Manual transmission only
MF-TRS-09E92A (6-bolt)
- BMW E82 and E88 135i 2009+
- BMW E90, E91, E92, E93 335i and 335ix 2009+
- Manual transmission only
Key specifications
- Material: Imported Japanese SAE 4140 forged steel
- Heat treatment: Forged, double tempered and super sub-zero treated for toughness
- Surface: Proprietary nitride treatment for increased hardness
- Balance: Precision balanced to 12,000+ rpm
- Weight: Approximately 21 lb
- Clutch compatibility: OEM or OEM-style clutch
Professional fitting
Professional installation is strongly recommended. For fitting at Nforcd in Warwickshire, request a quote at Sales@nforcd.com. We can supply, fit and advise on the ideal clutch pairing for your power goals.
Compatibility check
We will confirm compatibility before dispatch. Provide your UK registration or the last 7 digits of your VIN at checkout so we can verify the correct 6-bolt or 8-bolt flywheel for your car.
Warranty
MFactory Competition Products provide a limited 1 year warranty on Lightweight Flywheels covering defects in materials and workmanship, subject to professional installation.
Search-friendly terms
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