When used properly, Box One tensioners will protect your frame dropouts and hold your rear wheel in place. Keep in mind, however, they aren’t indestructible (neither are your dropouts). Install these lightweight chain tensioners with care and leave the 15-inch breaker bar in your toolbox.
B**E
Held up well, set-and-forget
I had these on my race bike all summer. They're very light for being chromoly, I can't really tell a difference from the AL when they're in my hand. The longer bolt as opposed to the longer nut makes them even lighter. Very versatile design and quality product from BOX.
Trustpilot
4 days ago
1 week ago
