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The Patented 2011 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
  • Designed for standard English threaded bottom brackets (1.37 X 24 tpi)
  • Width is 66mm (will fit bb shells up to 73mm width)
  • Manufactured in the U.S.A.
  • Fits just about any bike that uses an ebb*
  • Download installation instructions

The Patented 2011 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
  • Designed for standard English threaded bottom brackets (1.37 X 24 tpi)
  • Width is 66mm (will fit bb shells up to 73mm width)
  • Manufactured in the U.S.A.
  • Fits just about any bike that uses an ebb*
  • Download installation instructions
Frequently asked questions:

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 Amber 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.