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and precise fitment are paramount
Since the heat exchanger sits front and center in the M3's cooling stack
These precision-engineered camshafts improve power delivery and ensure durability under demanding conditions
Full stainless steel bolt kit
Silicone Couplers & Clamps
RK Autowerks S63 Stage 2 Turbo Upgrade X3 and precise fitment are paramountService requires customer cores. The RK Autowerks S63 Stage 2 Turbo Upgrade by RK Autowerks is engineered for enthusiasts seeking substantial power gains without sacrificing the drivability or reliability of the factory turbo system. This upgrade preserves stock style spool characteristics and maintains full launch control functionality, making it ideal for street and track performance. To accommodate larger internal components, OEM turbo housings are
