11/20/2025: Dear Friends, I am currently in chemotherapy and unable to promptly answer emails or ship orders. I will do my best to take care of your needs, but hope you can be patient. Thank you all for your support.
Tandem bottom brackets and bottom bracket parts
On this page:
Eccentrics: Burley 45mm diam x 76mm with 130mm axle/BB | Burley 45mm diam x 76mm with 117mm axle/BB | Cannondale new eccentric | Eccentric fixing bolt | Cannondale eccentric fixing nut
Bottom brackets, bearings & axles: Burley 130mm bottom axle w/6203 bearings | Burley children's stoker bottom bracket
We do not have an on-line shopping cart at this time. Please call us: (503) 480-2001 or email: sscycleworks@comcast.net
Bottom bracket eccentrics:
Burley eccentric 45mm diameter x 76mm with 130mm axle bottom bracket. Used, $100.00
Comes with 6003 sealed bearings

Eccentric with axle and bearings.
Burley eccentric 45mm diameter x 76mm with 117mm axle bottom bracket. Used, $125.00
Comes with 6003 sealed bearings

The 6003 bearings are easy to find if they ever need to be replaced.

Another view
Cannondale bottom bracket eccentric. New, $100.00
68mm x 54mm diameter.

From one side...

...and the other side.
Bottom bracket eccentric fixing bolt. $10
Part# 63291
We currently have two different bolts (please see note below picture) Have a need? Drop us an email: sscycleworks@comcast.net

We only have two bolts left in stock. The black bolt and the longer bolt
Cannondale bottom bracket eccentric fixing nut. $10
Part# 63290
We have three in stock

Note that one has a slotted end.

Another view
Bottom Brackets, axles and bearings
Burley 130mm bottom bracket axle with 6203 sealed bearings. Used, $50.00

Burley Children's stoker bottom bracket, 37mm diameter bearing shell w/140mm axle. Used, $100.00
- Bearing casing is 37mm in diameter, 65mm long.
- Axle is 140mm long.
- Bearings are #6003

Top view

Another view
