Almost universally fitted to classic British race bikes and Tritons / Cafe Racers these days: high quality, European made 8mm pitch HTD profile drive belts in a wide range of sizes.
Widths:
- 25mm: Road bikes only, a bit narrower to accommodate an alternator
- 30mm: Standard race bike fitment
- 40mm: High power 750cc+
Lengths:
- 880 - Norton Commando
- 920 - Original G50/7R in std AMC frame
- 960 - Norton Dominator, replica G50/7R from about 2000 in std AMC frame
- 976 - Specials
- 1000 - Manx Norton, Seeley G50 etc
- 1040 - Specials
How tight should the belt be set? The simplest answer is that when everything is cold, it should be easy to turn the belt through 90 degrees at mid span.