At OLSEN HQ after many years of destroying drivetrains I have developed the following FLAT ROUND chainrings and sprockets for singlespeed use.
This sprocket will fit any Shimano HG cassette freewheel.
- Normal "gear focused" chainrings do not last.
- chainrings are expensive
- chainrings wear out.
- every gear feature adds cost.
FLAT and ROUND
- No post machining.
- No "OVAL" or BIOPACE Cogs designed by marketing departments.
- Lasercut in the UK from 3mm 316 grade stainless steel.
- 3mm will fit 1/8" chains
- can be polished to a high shine