Wavetrac Torque Biasing Differential BMW 135i/335iS (E87/E92) DCT 215K Axle R=2.35-2.81

Wavetrac Differential BMW E92 DCT 335iS E8X F10 550i E90 335D (215K w/ Welded Ring Gear) R=2.35-2.81

The Wavetrac is the only torque biasing differential on the market featuring patented technology that keeps power going to the gripping wheel even when the opposite wheel becomes fully unloaded. Unlike a conventional limited-slip that goes effectively open under zero axle load, Wavetrac's internal cam device generates its own preload in those conditions — so you stay in control and keep moving. Built from 9310 alloy steel gears in a case-hardened steel housing and fastened with ARP hardware, this is a serious unit for BMW 215K axle applications running final drive ratios between 2.35 and 2.81.

This listing covers the Wavetrac differential for the BMW 215K axle fitted with a welded ring gear, suitable for E87 / E92 135i, E92 335iS DCT, E8X, E90 335D, and F10 550i platforms. Compatible with final drive ratios from 2.35 through to 2.81.

Important: This application uses a welded OEM ring gear assembly. Machining work is required and Installation Kits are sold separately. Please read all special fitment notes before ordering.

Key Features

• Patented Wavetrac cam device maintains drive under zero axle load conditions — no open-diff behaviour at the worst moment
• Suits BMW 215K axle with welded ring gear, final drive ratios 2.35–2.81
• 9310 alloy steel gears for exceptional strength under high load
• Case-hardened steel differential housing
• ARP fasteners throughout
• Torque ring gear bolts to 115 N·m (85 ft-lb)
• Transferable Limited Lifetime Warranty included
• Machining required — Installation Kit sold separately

Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please ensure your vehicle's year, trim level, and final drive ratio are confirmed before ordering.

Not sure if this differential suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.