S1 Kits Ultimax and RK rotors Autotecknic torque and improved throttle response

torque and improved throttle response for your 2000-06 BMW X5 (E53) V8-4

Dual free-flowing 304 stainless steel mufflers are used to absorb high pitch tones producing a powerful sound and unleashing all available horsepower and torque

A quick note on the materials we use…whether it is 6061-T6 or 7075-T6

These intercooler tubes are not CARB exempt at this time and is not legal for sale in California or use on vehicles registered with the California Department of Motor Vehicle

Fidanza’s short shift kits are made precisely with 6061 aluminum and hardened steel

S1 Kits Ultimax and RK rotors Autotecknic torque and improved throttle responseKit components UD922+RK7162