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The SPEC Stage 4 clutch kit provides a higher-capacity single-plate clutch for select BMW applications, targeting stronger torque loads while remaining a single-disc solution. It fits 2011–2013 BMW 335, 2011–2016 BMW 535, and 2012–2017 BMW 335i (F30) models and requires SB55S-2 or SB55A-2 FW. This kit is suitable when greater clutch holding power is needed without switching to a multi-plate assembly.
Spec 11-13 BMW 335/11-16 BMW 535/12-17 BMW 335i (F30) Stage 4 Clutch Kit (Req SB55S-2 or SB55A-2 FW)
