JBS Kawasaki KRX 1000 Primary Spring

IN STOCK!

75% STIFFER ON THE BOTTOM END FOR AWESOME THROTTLE RESPONSE DOWN LOW BUT 15% SOFTER ON THE TOP END FOR FASTER SHIFT OUT ONCE THE RPM’S ARE UP FOR FASTER 0-60 TIMES AND PERFECT FOR STOCK TIRES, LARGER TIRES AND BOOSTED APPLICATIONS.

BEST DESIGNED PRIMARY SPRING ON THE MARKET AND MADE IN THE USA BY HYPERCO FOR JBS.