http://www.webcamshafts.com
ET/LX150 Hot Cam?
Clutch shaft and reduction gear are from 2006 GT with approx 6k miles. Clutch shaft fits all Leader motors, all 2-valve 150cc Vespa and Piaggio and all GT200s. Reduction gear fits all GT200s and is also same gear as 3-valve Primavera, this gear + 2014-2016 Primavera axle yields 10% up gear for 2014-2016 Sprint.
https://www.scooterwest.com/overdrive-kit-for-vespa-sprint-150.html
Free Bay Area pickup(Mountain View) or cover shipping, PM zip for quote.