Interbike 2008: Yess Pro ETR-D Chain Tensioner

At Interbike we met with YESS.  Other than the unit RL featured last month, the ETR-B, they also provided us with their new ETR-D tensioner for full suspension bikes.

IMG_9024 copy by you.                               ETR-D, outside view               

February of this year I converted my Intense Tracer into a full suspension single speed bike.  A Key part of my conversion was the YESS chain tensioner, model ETR-V. Since then I’ve had many rides and racked up many miles on this unit.

IMG_9385 by you.                                  Singlespeed Intense Tracer with ETR-V tensioner.

The ETR-V has worked perfectly (as it’s supposed to) and held up well. One flaw I thought was the ETR-V was not truly compatible with the older Horst-link design.  I recall during my conversion having one difficulty with the installation.  The arm on the ETR-V was hitting the Horst-link & chainstay of my Tracer.  This posed to be a problem until I made several adjustments.  I moved the arm down into several holes (of the joint) until it was no longer hitting the chainstay.  Although it appeared clearance free, often times under compression I would find that the small nut would get stuck or lodged into the Horst link.  This eventually created a dent into the chainstay where it no longer gets stuck.

IMG_9100 by you.                                 You can see the dent on the inner arm of the chainstay where the nut would make contact.

This new model, ETR-D, will replace the one that I had installed.  Main difference is the original attached through the axle where this new model will attach onto the derailleur hanger.  Much better I think, dropping the arm lower where it will have enough clearance to avoid contact into the Horst link.


IMG_9022 copy by you.                                   ETR-D, inside view.

Description from Yess:

Designed for Full Suspension Mountain bikes using various Axle sizes. This tensioner will also allow removal of wheel without interrupting the tensioner mount. Installed onto the derailleur hanger and locked into place with two setscrews, this is all you need to convert your full suspension frame into singlespeed.

I’ll be posting a follow-up report soon after I have installed the new ETR-D. Stay tuned. For more information, log onto


Interbike 2008: Yess Pro Chain Tensioner

A while back I did a review of the Yess Pro Full Suspension Single Speed Tensioner.

At Interbike, we met up with Yess Pro and they showed me one of their other tensioners and I asked if we could test it, they agreed and handed me a unit right there.

This is the ETR-B, its a bottom bracket mounted tensioner. I wanted to try this baby out because I want to make my drive train look cleaner and eliminate the tensioner that hands from the derailleur hanger.

The ETR-B is adjustable to ensure a perfect fit and tension.

Once I get it installed, I’ll report back on the performance.

Yess Pro(ETR-V Vertical Chain Tensioner) Full Suspension Single Speed Tensioner Review

I’ve been riding with the Yess Pro for about 5 months. It’s been installed on two different bike and ridden all over the place.

When I first started my full suspension single speed project, people had told me about the Yess Pro tensioner. In fact sell this item for $54.98. Originally I set up my FS SS on standard tensioner but I found that my gears kept skipping. I also was convinced that I needed my chain to wrap around my rear cog more than the standard tensioner was doing.

The tensioner was installed on the Woodstock 707 for about 2 months. Then I received a Sette Reken frame to use on another single speed build up. Again with the Sette, I used a standard tensioner. But I later found out that those things just sucks compared to the Yess Pro.


The Yess Pro has to be one of the best inventions out there that would benefit single speed mountain biking. I really enjoyed using the Yess Pro for the plain fact that it worked as described. I did drop my chain twice during the testing period, but that was only because I didn’t set the tension tight enough and when I landed, the chain slap had so much momentum that it fell off my chain ring. Other than that, the chain never came off the rear cog, nor did it have any mechanical issues what so ever.


2 things that I didn’t like about the Yess Pro. #1, your chain line cannot differ from how they built the tensioner. Basically meaning if you you’re using a typical triple crank, you’ll have to place your front chain ring on the inside of the spider. But for some odd reason my Shimano crank required that my ring to be installed on the outside of the spider, which mean that my chain line is further out.

So what happens is, the roller on the tensioner has a lip on it which your chain ends up riding on. I had to install 2 washers on both mounting bolts of the tensioner to bring it out further so the chain would site just right on the roller.
#2, The stainless steel guide plates on the pulley started to rub against my new KMX single speed chain. After a few rides I noticed that my chain showed some visible wear from the guide plate and after removing and inspecting the plates, they too had wear on them. So the I removed them and found that the tensioner will work perfectly fine with out them.

One thing I would like to point out is that there might be some fit problems with bikes with the Horst Link suspension. Joe Solancho has an Intense that he converted over to SS, and he had a heck of a time getting it installed on his bike. His LBS had to contact Yess Pro to get some advice to get it to work.


Here’s shot of the Yess Pro installed on my hardtail single speed, the Sette Reken. In my opinion, this is a great set up for both full suspension and hard tail single speeders.

So overall, the tensioner never failed on me. Installation is pretty self explanatory, but keep in mind that you may need some washers in the event your chain line sits further out than what Yess Pro had intended their tensioner to work with. For more information about the Yess Pro tensioner, visit their site HERE.