VELOCITY STACK 17+M8 CHR

4” diameter opening with an internal taper down to 64 mm ID Great performance part for racing and for those that want to head to the track on the weekend Impressive horsepower and torque gains on engines running modified and ported cylinder heads and intakes with larger throttle bodies 3” tall billet aluminum velocity stack fits M8 throttle body 3 hole bolt pattern Made in the USA Includes backing plate and all necessary hardware for standard head breathers