OLSEN Singlespeed 20T Stainless steel 9Spline Sprocket

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.

WHY?

• 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