The DOC Race turbo kit is the ultimate turbo kit for your street machine

5 mm bore size for 3420 cc displacement

machined from a 2618-aluminum closed die forging for strength and optimized airflow

this radiator includes the Mishimoto Lifetime Warranty

M54 Throttle Cable Conversion Kit S65 Springs The DOC Race turbo kitThe Throttle Cable Conversion Kit is engineered to convert your OEM drive by wire throttle body into a cable controlled system. Designed for BMW M54 engines, this kit replaces the factory electronic throttle actuator, delivering a more responsive and direct throttle feelperfect for high performance builds that demand precision. By eliminating the electronic throttle actuator, this conversion restores direct control between the throttle pedal and