GY6 Upgear kit. 7.4% upgear. 50 ton gear press required for install. Get the most out of your big bore kit, with increased top speed and a more usable rev range.
20mm W x 20mm I.D
NCY, Gear Set (15*37); GY6 150cc
Gears
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NCY Performance Exhaust (Carp Mouth, Stainless); GY6
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