This is a set of APE heavy duty valve springs. APE valve springs are made from premium chrome silcone wire, for consistent pressure and excellent fatigue life.Ideal for use with and performance camshafts. See our other listings for more ape performance parts for the GSXR1000. The item "Suzuki GSXR1000 K1-K8 APE Heavy Duty Valve Springs. VS1000S-Pro" is in sale since Thursday, March 1, 2018. This item is in the category "Vehicle Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Other Engine Parts". The seller is "suzukiperformancespares" and is located in wisbech. This item can be shipped worldwide.