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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21
Since the heat exchanger sits front and center in the M3's cooling stack
high-load applications
11 37 7 599 021
and poor fuel economy
Designed for racing applications (not street legal)
RK Autowerks S63 Stage 2 Turbo Upgrade X3 Since the heat exchanger sitsService 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
US$ 41.00
US$ 34.00
US$ 29.99
US$ 49.95
