MFactory BMW Differential Final Drive Ring & Pinion Gears 3.08 Ratio - E82 E88 135i, E90 E91 E92 E93 335i/335d, F20 F21 M135i, F22 F23 M235i, F30 F31 335i, 435i

Performance Crown Wheel and Pinion 3.08 Ratio for BMW 1 Series, 3 Series and 4 Series

Transform how your BMW delivers power with this premium 3.08 crown wheel and pinion gearset. A ratio change breathes life into the driveline, giving you stronger pull in-gear, crisper throttle response and that urgent surge you want on B-roads, track days and drag launches. Expect an average 10 to 15 percent increase in torque feel across the rev range compared with the stock gearing, plus superb efficiency that gets more power to the tarmac.

We run these on our own cars and customer builds, and the results have been brilliant. Fitment is precise, noise is minimal when set up correctly and durability is outstanding. If you are chasing quicker real-world acceleration without touching the engine, a 3.08 ratio gear swap is the smart upgrade.

Why enthusiasts choose this rear axle gear set

• Diamond cut from forged high nickel chromium molybdenum steel for serious strength under hard launches
• SolidWorks CAD and Cosmos FEA engineered tooth profile for optimal mesh and load distribution
• Advanced gear geometry that reduces parasitic loss and improves power transfer to the wheels
• Race proven components that on average put 1 to 2 percent more power to the ground versus rivals
• Beautiful finish and exacting tolerances for straightforward installation and long service life

Technical specification

• Material: Japanese SAE 8620 and 4320 steel
• Process: Forged, double tempered and super sub-zero treated for toughness
• Surface: Advanced shot peened for fatigue resistance
• Engineering: CAD and FEA optimised gear geometry
• Ratio: 3.08 axle ratio

Vehicle compatibility

Suitable for BMW platforms originally equipped with a 3.08 ratio:

• E82 E88 135i manual and DCT
• E90 E91 E92 E93 335i and 335d manual and DCT
• F20 F21 M135i 2012+ manual
• F22 F23 M235i 2012+ manual
• F30 F31 335i 2012+ manual
• F32 F36 435i 2012+ manual

Real-world gains you will feel

• Faster in-gear pull for overtakes and corner exits
• Sharper response without compromising OEM drivability
• High strength gearset that thrives on spirited use
• Loved by MJ Modifications customers who want a dependable driveline upgrade

Part number

MF-TRS-02E31

Manufacturer

MFactory

Warranty

Lifetime warranty

Professional fitting and setup

Correct backlash and preload are essential for longevity and quiet operation. For supply and installation, choose MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Compatibility check before dispatch

We will verify fitment before shipping. Please provide your UK registration or the last 7 digits of your VIN at checkout.

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