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Front Sprockets for Triumph Twin Cylinder models

Scrambler Scrambler

Always find yourself looking for another gear? Simply add an extra tooth front sprocket for lower RPM and more relaxed cruising.

These sprockets will fit all model years of Triumph Bonneville, T100, Thruxton, Scrambler, America and Speedmaster.

Std sizes are listed below for reference:

  • Speedmaster 790cc - 17T STD - Suggested option 18T
  • America 790/865cc up to 2012 - 17T STD - Suggested option 18T
  • America 2013 - 18T STD - Suggested option 19T
  • Bonneville/T100 790cc - 17T STD - Suggested option 18T
  • Scrambler - 18T STD - Suggested option 19T
  • Speedmaster 865cc - 18T STD - Suggested option 19T
  • Thruxton - 18T STD - Suggested option 19T
  • Bonneville/T100 865cc - 18T STD - Suggested option 19T



17 tooth TBP633-17   US$ 43.50 Quantity
Choose your size  
18 tooth TBP633-18   US$ 43.50 Quantity
19 tooth TBP633-19   US$ 46.50 Quantity