Heavy Hitter 520 Primary Drive Conversion OEM/EBMX Ultra Motors MFPN=ST21-MQ579110-BK Cartridge Bearing Angle 36x36 Bearing

Cartridge Bearing Angle 36x36 Bearing I

Designed with ergonomic flare that adds approximately 20mm of total width at ends of drops

}microSHIFT M21 Rear Derailleur - 67 Speed Short Cage Black

Bar Clamp Diameter (mm) 21 - 22

}SRAM XX SL Eagle T-Type Direct Mount Chainring - 36t 12-Speed 8-Bolt Direct Mount 3mm Offset Aluminum Black/Silver D1

Heavy Hitter 520 Primary Drive Conversion OEM/EBMX Ultra Motors MFPN=ST21-MQ579110-BK Cartridge Bearing Angle 36x36 BearingThis kit was designed for riders who want to maximize their bike's performance. As seen on EBMX FIM E Xplorer race team bikes ridden by Jack Field & Jess Gardiner. This is the lightest kit on the market, which means less rotational mass, and resistance. This kit consists of a hybrid sprocket setup, with the rear sprocket being a 7075 T6 Billet with anodized hard coating, and the front sprocket being a machined steel sprocket, heat treated, and counter