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making it easier for shorter riders to plant their feet firmly at stoplights
the kit includes the 43mm cylinder bore and piston assembly needed to complete the swap
Straight Valve Stem - TR4
this 4-wire DC stator is a direct OEM-quality replacement for Chicago Scooter Company models and a wide variety of Chinese-manufactured scooters
Verified fitments include:
RDR Chrome Silicon Steel Alloy Valve Springs rolf making it easier for shorterRDR'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
