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Hollow Dropouts with Chain Tensioners

Hollow 8mm wide dropouts are as light as a solid 5mm dropout, but over twice as strong. There is a small internal chain tensioner to hold the wheel in place as well as simplify wheel removal.

Sunday came out with the first hollow dropout in 2006 and it has set the standard ever since. It’s forged and CNCed to create a hollow structure that weighs the same and is over twice the strength of a traditional plate dropout. In 2007, we improved the dropout by adding a built in chain tensioner that is very simple to use. This dropout is the strongest and most functional dropout ever made.