R+E Cycles, home of the Bushnell eccentric chain tensioner

The Patented Bushnell Featherweight eccentric:

Advanced design, high-performance, extremely light weight and easy to use.

Suggested Retail $184.99

General Specifications:

Weight - 140 grams
Construction materials - aluminum and stainless steel
Diameter of part - 2.118 inches (53.78mm)
Fits BB shells from 53.8 ~ 54mm I.D. without shim
Fits BB shells up to 57mm with available shim
Manufactured in the U.S.A.
Fits just about any bike that uses an ebb*
Download installation instructions

The Patented Bushnell Retro eccentric:

Same advanced design, easy to use, and economical.

Suggested Retail $124.99

General Specifications:

Weight - 224 grams
Construction materials - aluminum and stainless steel
Diameter of part - 2.118 inches (53.78mm)
Fits BB shells from 53.8 ~ 54mm I.D. without shim
Fits BB shells up to 57mm with available shim
Manufactured in the U.S.A.
Fits just about any bike that uses an ebb*
Download installation instructions

Frequently asked questions:

Will the Bushnell eccentric fit in your bike?
Read a history of the Bushnell eccentric.
Look at a photographic evolution of the Bushnell eccentric.
Why is the Bushnell eccentric the best?

If you are a frame builder, and would like to order in quantities of 20 or more at a time, you can email Kara directly about setting up an OEM account. If you want to order in small quantities, visit our distributor page.

Here are just some of the quality manufacturers who use the Bushnell eccentric on their bicycles.

BMC Racing (Switzerland) - DaVinci Tandems - Glenn Erickson - Lite Speed - One Cycles - Steve Rex Handbuilt Cycles - Rodriguez Bicycle Company - Rotor (Germany) - Seven Cycles - Tomac Cycles - Tour de Suisse (Switzerland) - Trillium Cycles - Van Nicholas Cycles - Ventana Bicycles - Dave Yates Cycles(England) - Zona Tandems

Bushnell Cycle Design is a part of R+E Cycles