BMW Post-'99 Differential C Clip Backlash adjustment Kit - RacingDiffs

Opinions on racingdiffs.com - NA M3 Forums

BMW E46/E92 M3, M5, M6, Z4M LSD diff Rebuild + Free play fix kit - RacingDiffs

RacingDiffs LSD for BMW 210mm - E36 M3 3.2, E46 E92 M3, E39 E60 M5, E63 M6, Z4 M

If you decide to change gear ratio of your BMW differential, than this set is absolutely a necessity. It includes parts without which you can't

BMW non M Gear ratio Swap set

BMW M2, M3, M4, M5, M6 F-chassis LSD differential Advanced rebuild kit

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BMW Gear ratio Swap set - Adjustment shim / c-clip set - RacingDiffs

bmw - RacingDiffs

BMW E46/E92 M3, M5, M6, Z4M LSD diff Rebuild + Free play fix kit - RacingDiffs

Bimmerforums - The Ultimate BMW Forum

Opinions on racingdiffs.com - NA M3 Forums

Differential Upgrade Guide

If you are switching to LSD or changing gear ratio, you will need to adjust backlash. This will help you to adjust your differential perfectly and

BMW 188K Differential Backlash C clip (snap ring) kit for E46 E90 Z4 E39 E60