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Chain Tensioners

Surly Tuggnut


Surly Tuggnut

£30.50 RRP: £32.99
Stock Status: In Stock
Ever stomp on the pedals just to have your rear wheel slide forward in the dropouts and throw your chain?

We have....using all kinds of hubs in all kinds of frames. There are lots of BMX-style tensioners out there, but few of them fit in our dropouts without some serious grinding. So, we decided to design a chain tensioner that will keep that rear wheel static in our dropouts...and most other kinds of rear-facing horizontal dropouts. Plus, ours will open up a bottle o' brew. The body of the Tuggnut is investment cast in stainless steel for durability. It features a thumbscrew, for tool-free adjustments, and 2 axle holes for a wide range of fore/aft wheel positions. The Tuggnut comes with an aluminum adapter that reduces the axle hole from 10mm to 6mm, so you can use it with quick-release axles, in addition to nutted axles.

We sell it as a single, because you really only need one...on the drive side. But, if you absolutely need one on the non-drive side of your rig, to achieve balance in your life, you are in luck...the bottle opener works either way.
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John S - London burbs

I can honestly say that these are a must for my Surly Rohloff Bafang Pugsley (yes it’s real... and I own it.... weep mere mortals). I find it’s good to have one on both sides for OCD and if using big rotors to keep both sides tensioned and avoid slippage under extreme truck v pug style breaking! And I can confirm that the bottle opener works on both sides.... although I was upside down and my beer drained out when using the left side! Hmmmmm.... 🤔