Wavetrac Differential - Wavetrac ATB LSD for BMW 168 size axle (small case) with r=3.91 including E81, E82, E87, E88 chassis 116i, 118i, 120i E90, E91, E92, E93 chassis 318i, 320i, E93 chassis 323i

Wavetrac®: Designed from a clean sheet using state-of-the-art knowledge and engineering to be a better differential than any other. It uses a patented design to improve grip in low traction conditions.

Wavetrac®: Gives you quicker acceleration and faster cornering by driving both drive wheels instead of just one. And, it offers improved no-load performance when compared to other helical gear differentials on the market.