KNWU Cogs Shimano Dura-Ace Suntour NJS 13T 16T 17T

A rare black-finished set of vintage NJS track cogs with a strong connection to Dutch track cycling history. This set originates from former KNWU Dutch National Track Team mechanic Felix, whose name is still visible on some of the cogs, marking them as team-issued and rider-specific equipment.
These cogs were used by the KNWU Dutch National Track Team and prepared for elite-level track racing. Markings and finishes like these were commonly applied to distinguish equipment between riders and setups during training and competition.
Some cogs in this set feature flattened teeth, a modification carried out on a lathe to reduce weight and potentially minimize rolling resistance, a typical high-level track optimization from the pre-marginal-gains era.
 
Set includes (detailed per cog):
1× Shimano Dura-Ace NJS – 13T
2× Suntour NJS – 17T
1× Shimano Dura-Ace NJS – 16T
 
Details:
Standard: NJS
Notes: “Felix” marking visible on select cogs
This is more than track hardware, it’s a genuine piece of Dutch track cycling heritage, ideal for collectors, display builds, or riders who value authentic race-used components with a story behind them.