Dmr Simple Tension Seeker - Silver, One Size

Great to convert to single speed, seems to give good chain tension.

Simple and easy to set up 👍🏻

Good bit of kit thankyou

It literally worn out in two seconds the rubber wheel

Good.

Great item. Fit as should . Works perfectly. Thank you

The product says it's for MTB but doesn't fit any fitting for some down hill bikes even though it say universal .

Red nylon part has lasted about 3 months don't buy this if you actually use your bike

I have a surly bridge club frame, and this tensioner fits it like a glove. Seriously, the dropout fits perfectly in. Very straight forward installation. Make sure you have a quick release wheel. Very strong and reliable tension. You will have to adjust it by hand while holding a wrench with the other. I use it for a 500-watt ebike motor. My build is a custom single speed. I tried two other tensioners, and they just broke or felt flimsy. This however is strong. No springs or pulleys. It uses ball bearings that can be replaced. Don't let the amazon picture fool you. It looks great in person and very nice on your bike. It also comes with the associated bolts to put it on your bike.

クロスバイクのシングル化で購入しました。チェーン幅が876スピードなので、1スピードチェーンはローラーに収まらず少し残念だけど、立ち漕ぎ激チャでも固定安定して満足です。

Good quality item very well made.

I have used several methods to tension chains on single-speed bicycles and they all have problems. This one, though, worked with no issues or fiddly adjustments. There is no spring--you set the tension by pushing it up or down onto the chain and tightening up the bolts. The roller finds its alignment with the chain after a few spins of the cranks. An argument could be made that a spring system adjusts as the chain stretches; however, if that happens it is simple to readjust the tension (5mm Allen key required) and ride on. I image this would only happen once during the life of the chain. I installed it in about 10 minutes and used the rest of my free time to go on a bike ride. If it develops problems, I'll update this review.

I got one but it turns out it wasn't necessary for also going with a half link chain, the line is dead straight and tension is on point despite having vertical dropouts chain stays. I had to modify a skateboard for a pulley wheel but it was simple as long as you can access some type of lathe to cut 1/2" out of the centre to accommodate the fatter half link. The bikes ass end got a whole lot sexier with the mods (including silver single sprocket and polished spacers).