Wavetrac High Friction LSD for BMW 215K Axle, Welded Ring Gear, r=2.35-2.81: F10 550i, E90 335d

The High Friction version of Wavetrac's diff for BMW's 215K rear axle with a 2.35 to 2.81 final drive, as under the F10 550i and E90 335d. Wavetrac tune a diff's bias ratio with plates of different friction; this is the High Friction build of the standard 30.309.172WK. The welded factory ring gear needs specialist machining first.

• High Friction version for the 215K axle, 2.35 to 2.81 final drive
• F10 550i and E90 335d
• The welded ring gear needs specialist machining (not included)
• Standard version: 30.309.172WK

Check before you order

• The factory ring gear is friction-welded to the open differential: it has to be split off, machined and threaded to take the Wavetrac and ARP bolts. Machining and bolts are not included.
• The cars listed are a guide only: BMW fitted more than one axle size and final drive ratio to the same model. Confirm your axle size and ratio from the VIN or the axle's part number before ordering.

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