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Origin8 Chain Tension Adjuster

Free shipping on orders over $29.99

$12.48

$ 5 .99 $5.99

In Stock

About this item

  • FORGED ALLOY CONSTRUCTION: High Quality construction for long lasting use.
  • CHROMOLY ADJUSTMENT BOLT: Keeps the tensioner lightweight and super strong.
  • SPECS: Designed to work with 3/8th" solid axles.
  • COMPACT: Slim design will not distract from the overall look of your bike.
  • TRUSTED Origin8 BRAND that stands for quality and durability.


Origin8 Chain Tension Adjuster


Patrick Fuller
Reviewed in the United States on September 1, 2024
I'm using these on my go kart and they excel. I went through two sets of the crappy Chinese ones before I found these. I am super impressed!
Leonidas
Reviewed in the United States on August 26, 2024
Work great and easy to use though I did use different nuts on the bolts that did not seem to loosen as much while riding
Matthew O'Connell
Reviewed in the United States on December 11, 2024
Had to drill out the opening larger to accommodate my bike's axle. I admit I did not read the specs to confirm it would fit before purchasing, but for the cheap price the DIY modification was worth it to be able to use this tensioner. Once the hole was drilled out, no issues.
Antelope Eyes
Reviewed in the United States on November 25, 2024
I liked how easy these were to install. So far holding up great to some serious jumping! Make sure you get the right size. Tensioners will prevent the frame from getting rubbed and the paint chipped.
akameraman
Reviewed in Canada on October 7, 2024
Unfortunately it doesn't fit my Banshee AMP... I will have to drill it and adpat it since I can't return it.
Chancey
Reviewed in the United States on April 13, 2024
No matter how I tighten my rear wheel, it always loosens. These chain tension adjusters are a godsend. I no longer have to worry about my chain slipping, due to lack of tension. So easy to install. Can't complain, just like the last few times I bought Origin8 products.
alksdfjapoisfuo
Reviewed in the United States on May 6, 2023
These worked well. I'm a bit disappointed they didn't seem to line up properly from the outside so I had to put them between the wheel and frame. These are pretty thick, so I had to mess with my wheels spacers and it's still a bit of a tight fit.
GH
Reviewed in Canada on June 7, 2018
Wasn't long enough for my dropouts.
Scum prophet
Reviewed in Canada on June 15, 2018
Read size wrong other then there useless to me their great
Julian A O Wood
Reviewed in Canada on March 21, 2018
Worked and fit perfectly.
snailmartyr
Reviewed in the United States on February 1, 2014
I've used chain tensioners like this before, but these are really well made.I wish they would include some large wingnuts in place of the zytec lined nuts to make adjustments to the chain tension and getting the wheel out of the rear dropouts truly tool-less. But that's just my idea for these things... I really can't fault their construction at all.These are made to be used on fixed-gear / track bicycles with horizontal dropouts. The large round side faces outward while the flat part slots into the drop out. This helps protect the rear dropout from getting marked up and provides a solid place for the axle nut to grip and hold the wheel firmly.There aren't any instructions, but it looks correct when the rounded bit on the rear tab that pulls the wheel back in the dropouts faces outward. Adjustments are super easy and with a small wrench you can easily dial in exactly the tension you want in your chain and have the rear wheel perfectly centered in the rear triangle. Once you have it set, just tighten the axle nuts... voila.
EricTheDesigner
Reviewed in the United States on February 18, 2012
I've been riding a fixed gear bike (no free wheel cog) for 7 years. I just finished installing this product on my Langster London edition Specialized bike. Wow! These chain tensioners are hands down great quality! I can not believe I went this long with out this product. I build cars and design 3D cad files for a living, and these are very well machined. This product completely takes all the pressure off the rear axle. I no longer have to tighten one side of the axle and then pull the other side tight while trying to torque down the nut. I have broken 2 axles in the past 7 years tightening the rear wheel in this maner, now that I have found this product, I can, with full confidence say that I will never break another axle.The tensioners come with hardened nuts and washers, very strong, the nut for adjusting tension is a 10mm. The shaft, nut and small washer are stainless steel. The tension nut is a lock nut so no worry about it coming loose.These tensioners allow you to get the proper chain tension and precisely align your rear wheel straight. This is crucial for high speed cycling (33 - 40 mph) no more worrying about getting a high speed wobble because the rear wheel is slightly off center.Now to explain my 4 star rating:I run a 53 tooth crank gear and a 16 tooth gear on the rear hub. Meaning I have very little play in my chain. Which in turn means that when installing the tensioner I have to have the axle in the full forward position. Almost all horizontal drop outs are rounded to fit the shape of the axle maximizing the distance you have for chain tightening. The Rockwerks tensioners have a near squared front insert. So when installing I could not get my axle in the forward most position. However being a mechanical person this was an extremely easy fix. Here is how to fix it. Grab your medium to fine metal file and file the front part of the insert round. It might sound difficult but any person can do this. The medium to fine metal file is about $5 at Home Depot or Lowes. The reason anyone even my 4 year old son can do this to the insert is the insert is aluminum. When it comes to metal filing aluminum is like butter. It took 5 swipes to the top and bottom of the insert with a little rounding action as you push the file forward and voila, you have a rounded front end insert. Just remember that Files only work in the push direction, so no back and forth like sand paper. Now you have a great product and the begining of an awesome tool collection.
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