NCY Super Transmission Set; compatible with Genuine scooters, GY6 motors NCY This Super Trans Kit is one of the best dollar-for-dollar bolt-ons to improve your bike! Quicker accelleration, higher top speeds, and makes your CVT the smoothest operating trans in town! From rapid down shifting to slow cruising, this thing is smooth. Ultralight balanced components, oversized wear pads, and state of the art polytetrafluoroethylene (PTFE) coatings ensure superior performance and long service life. Kit includes: Ultralight gold specially coated overdrive variator Ultralight out er drive face Ultralight large shoe racing clutch Ulltraight drilled &amp; vented clutch bell Dual range secondary slider 18x14 10g roller weights 1000 RPM compression spring Ball bearing compression spring seat Recommendations: -Use a new belt with this kit-Use graphite or Moly grease when assembling &nbsp; Brand: NCYFits: Genuine 125/150/170ccGY6