We reproduced track cog lockrings for the early Schwinn Paramount hubs. The lockring thread is unique and original lockring is increasing harder to find.
$50
Reproduction Schwinn Paramount Lockring for sale
We reproduced track cog lockrings for the early Schwinn Paramount hubs. The lockring thread is unique and original lockring is increasing harder to find.
$50
Via Bicycle 
What is the thread used on these hubs?
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