RDR Chrome Silicon Steel Alloy Valve Springs

Description

RDR’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

Compatibility: 139QMB 50cc 4-stroke  and 125/150cc GY6 and GY6B 4-stroke engines

139QMB-based 50cc / 80cc engines with the following engine codes:

157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:

Don’t see your engine listed? If the engine code includes “QM” or “FM” and your bike is a 4T, this product is compatible with your vehicle.

About RDR: RDR is a Taiwanese manufacturer who specializes in performance and styling parts for scooters and motorcycles.

This product is not intended for use on public roads or land.