South Salem Cycleworks: Salem, Oregon
(503) 480-2001
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One-piece to three-piece crankset bottom bracket conversion kits

On this page: 122mm spindle conversion set | 131mm VP conversion spindle

These conversion sets will allow you to mount a three-piece cotterless crankset on a bike that was made for a one-piece Ashtabula-type crank.

One-piece to three piece crankset bottom bracket, 122mm. Used, $25.00

Bottom bracket conversion set

This will let you put a three piece crankset on a bike made for a one-piece Ashtabula-style crankset

Bottom bracket

And here's a close-up

Bottom bracket conversion set

End view

one-piece to three-piece bottom bracket converset kit

And here it is flipped around

VP 215H One-piece to three piece conversion spindle, 131mm. Used, $10.00

Made by Taiwan parts maker VP

Conversion spindle

Here's one side

VP conversion spindle

Here's the spindle rolled over to show its other side.