Description GY6 Upgear kit. 7.2% 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*36); GY6 150cc Gears Other products by NCY SKU1200-1163 - + Retail Price: $55.00 Your Price: $55.00 In Stock Add to cart Add to wishlist Have a Question about this item? Click here to email us. Also in Category Dr. Pulley High Performance Clutch; Buddy 125/150/170i, GY6 Price: $313.00 QTY: Add To Cart TFC Forged Aluminum Sheave Assembly; GY6 Price: $276.00 QTY: Add To Cart NCY Super Transmission Set; Genuine, GY6 1200-1048-1 Price: $275.00 QTY: Add To Cart