RDR Chrome Silicon Steel Alloy Valve Springs

Light Weight RDR Chrome Silicon Steel Alloy Valve Springs for 50cc, 125cc, and 150cc GY6 and GY6B 4-stroke engines. Rated for 12,000 RPM. The lighter your valve train components, the quicker the engine will rev.
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
Made in Taiwan
SUPPORTED MODELS: GY6 QMI/QMJ 152/157