RDR Chrome Silicon Steel Alloy Valve Springs rear fender powersports

powersports

E200 (V1+)

Also found on European and South American models of the Yamaha Jog 50

allowing you to fine-tune your engagement and "lock-up" speeds for your specific riding style

RDR Chrome Silicon Steel Alloy Valve Springs rear fender powersportsRDR's Chrome Silicon Steel Alloy Valve Springs for 139QMB 50cc 4 stroke and 125 150cc GY6 and GY6B 4 stroke engines are rated for 12,000 RPM. The lighter your valve train components, the quicker the engine revs. Specifications: Includes 2 Inner and 2 Outer Valve Springs Outer Spring Weight: 14g Inner Spring Weight: 7g Coil Diameter Outer Spring: 2. 54mm Coil Diameter Inner Spring: 1. 95mm Outer Spring Height: 37. 3mm Inner Spring Height: 27. 3mm