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Quantity
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If you make big power, you need our 14mm diff bolt upgrade. We supply an OEM BMW 10.9 14mm bolt and the matching front differential bushing. *Please note that you will need to drill the diff casing & tap to M14x1.5 with our upgrade kit. ...
Reviews
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the upgraded bolt takes abuse and holds up to just about anything! bent it twice, once cause it unthreaded itself and another front dif cover ear snapping! have spares now for the spares haha
T
Timothy · May 14, 2026
Packaged nicely, everything came clean and perfect condition. Feels great compared to the oem bushings and not worried to break anything else after this upgrade