Wavetrac Compatible with F3X 328i/428i [w] F3X 335i/435i AT 188K AXLE

188K AXLE with welded ring gear: r=3.15>

F3X 328i/428i
F3X 335i/435i AT

MUST WRITE IN WHAT INSTALL KIT YOU NEED FROM THE LIST

IF NONE REQUIRED TYPE IN NONE

Since March 2007 production, BMW has fitted rear axles where the ring gear is welded to the differential carrier.

Our Install Kits, combined with precision machine work, allow fitment of a Wavetrac® differential in late-model BMW rear axles where the ring gear is factory welded to the standard differential.

Upon receipt of a customer’s differential/ring gear assembly, the ring gear is separated from the stock carrier using CNC equipment. The ring gear is then machined, drilled, and threaded to allow bolt mounting to a new Wavetrac® differential.
We then return to the customer:

• Wavetrac® Differential
• Customer’s machined ring gear
• Precision-ground spacer ring (where required)
• Set (10) of custom, high strength ARP® ring gear bolts

For the best possible performance, disassembly of the stock axle, and fitment of the Wavetrac and Install Kit should be performed by one of our Specialist Dealers. This ensures that the condition of the axle can be assessed before modifications are performed and that the re-assembly is done professionally - ensuring correct gear backlash and bearing end play.

Factory part number: 30.309.175WK

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.

International shipping is possible. Please purchase and we will email you the exact shipping quote.