Hot Cams VSK1009 Performance Valve Spring Kit - High Lift Camshaft Upgrade for Motorcycles & ATVs - Perfect for Racing, Off-Road & Engine Rebuilds

Product Description

Created from premium, Japanese spring steel, these springs will allow the trouble-free use of more demanding, higher performance cams like the Hot Cams Gold Series and Builder Series camshafts. Exhaust springs max lift at OE installed height 0.478 inch Intake springs max lift at OE installed height 0.529 inch. Springs fit cam 1144-BLD, 1145-BLD, 1146-BLD, 1147-BLD, 1148-BLD, 1149-BLD, 1179-BLD, 1177-BLD, 1178-BLD, 1179-BLD, 1180-BLD, 1181-BLD. Exhaust coil bind: 1.024 inch; exhaust install force: 39.6 pounds; exhaust install height: 1.457 inch; exhaust maximum valve lift: 0.478 inch; exhaust open force: 180.4 pounds; exhaust open height: 1.102 inch; exhaust rate: 397 pounds/inch; intake coil bind: 0.866 inch; intake install force: 34.1 pounds; intake install height: 1.378 inch; intake maximum valve lift: 0.529 inch; intake open force: 155.1 pounds; intake open height: 0.945 inch; intake rate: 280 pounds/inch. For Honda CRF 450R 2009-2012.