Patterson Bike Tranmission

Front shifting will never be the same thanks to a great new invention by Sam Patterson – the inventor of Grip Shift™.   The Patterson Transmission delivers rocket fast front shifting every time   This invention will change the way you ride your bike.   Now you can use your front shifter any time to get the gear you want right now.   Secure and precise.  Unaffected by pedal speed or load.  Once you try it, you will never go back to multiple chain rings again.

  • Instant shifting
  • Shifting while pedalling
  • Shifting while coasting
  • Shifting while standing still
  • Improved ground clearance
  • Optimal chain line
  • Gearing equivalent to 28/45 T
  • Sleek & Simple
  • Easy to install on any bike with threaded 68mm BB, downtube cable routing and fixed chain stays
  • Compatible with any indexing front shifter (road, city or mountain bike)
  • Compatible with rear derailleurs and internal gear hubs
  • Chain guarded to permit riding in street clothes
  • Freewheeling front not compatible with kick back brakes