2010-2021 for Yamaha YZ450F RACE TECH Shock Spring 6.3Kg SRSP 652663 a chassis consisting entirely of

a chassis consisting entirely of advanced stretch mesh and an ultra-lightweight construction

protection and durability

Gas and oil separated with a divider piston

Custom colors available

2010-2021 for Yamaha YZ450F RACE TECH Shock Spring 6.3Kg SRSP 652663 a chassis consisting entirely ofManufacturer: Race Tech MPN: SRSP652663 Title: Shock Spring Size: 6. 3kg Option: Color: High performance springs with extremely accurate rates. Made of chrome silicon with a high stiffness to mass ratio and shot peened, heat treated and preset for no sacking. Spring rate listed is CLOSEST to actual stock rate. If not noted, assume stock rate is lower than P Ns listed for the application.