Differential by Wavetrac®. Dominate the track or hit the trails with confidence by fine tuning your vehicle for neck-breaking speed and performance with this premium differential component that delivers the ultimate in high strength and toughness. This rock-solid part is designed to provide the gearing that helps ensure your engine stays in the powerband for faster acceleration while providing maximum safety during tough driving conditions. Wavetrac® diffs are state-of-the-art helical gear differentials designed, developed, and manufactured in the USA. The Wavetrac® Differential is the only torque biasing differential on the market with patented technology that mitigates wheelspin when an unloaded wheel condition arises. During zero axle load conditions, the Wavetrac cam device acts to create internal load, maintaining drive on the gripping wheel instead of acting like an open diff (and going nowhere!). Super strong 9310 alloy steel gears are enclosed in case-hardened steel bodies, held together with ARP® fasteners. All Wavetrac® differentials include a transferable, Limited Lifetime Warranty.

Please Note:

*For the LSD Installation and Re-build (Stock Differential Needed*) option, you will be required to send us the entire differential casting which will then be rebuilt and returned to you

**If you cannot send us your differential, you may purchase the Wavetrac LSD Deposit which will be returned after inspection when you send us your non-damaged differential pumpkin. Please choose the Complete Rebuilt LSD (Deposit Required*) option at checkout and also add the deposit to your cart.

The exchange process is a simple 2 step process you can find below.

1. Pay for the product + the exchange deposit and we will send out to you a 30.309.155WK
2. We will then refund the exchange deposit if a complete, usable (in good working order) pumpkin received within 10 working days. pumpkin which require maintenance/repair to be put into service or are not in working order will not be refunded. 
   

*Please provide VIN & Transmission Type before purchase or at checkout so we can verify fitment. 

• Wavetrac ATB LSD
  
• ARP Ring Gear Bolts
  
• New, Genuine BMW Axle Seals
  
• Backlash Setup to OE Tolerances
  
• Precisely Machined Ring Gear

PLEASE NOTE

You will need to spec oil, for this application we advise for Motul Competition 75w140.

• If you lift a wheel, all gear diffs except Wavetrac®, will NOT power the other wheel.
• During the transition from accel to decel, all gear diffs except Wavetrac®, do nothing.
• The patented Wave hub improves driveability and performance during performance driving.
• The pinions in the Wavetrac run on patented Carbon Fibre bias plates in the housing. Whereas all other designs run the pinons directly on the steel housing. Overtime, with the metal on metal contact with other ATB designs friction can reduce and with this performance reduces. The carbon fibre bias plates in the Wavetrac create a consistent friction surface for the life of the differential for consistent performance.
• Its gear tooth forms are optimised for strength and improved oil film retention over competitive designs.
• gear package is smaller, reducing overall mass, yet is more durable since particular attention was paid to the tooth strength - optimised for high torque conditions.
• The internal gears are made from high strength 9310 alloy steel.
• The diff bodies are machined from case-hardened steel billet.
• Every Wavetrac® differential is built exclusively using high quality, high strength fasteners from ARP®, the world leader in fastener technology

With Welded Ring Gear:

• BMW 1 Series E82 E88 135i (2006-2013) [AT]
  
• BMW 3 Series E90 E91 E92 E93 325i (2007-2011)
  

To ensure the part(s) you have ordered fits your vehicle, we run a compatibility check prior to dispatch. We can do this either using your registration number or the last 7 digits of your VIN. Simply enter your car details prior to checkout.

30.309.155WK

Manufactured by

Wavetrac

Warranty

Wavetrac Differential Limited Lifetime Warranty