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Your cart is empty.Hit the town in style, with ALFINE--a high-grade groupset built for the sophisticated urban rider. Along with its premium build quality, ALFINE brings you finesse. versatility, and effortless operation. Whether in an 8-speed or 11-speed configuration, ALFINE presents a clean look and a wide gear range that serve to enhance any frame.
Nick V
Reviewed in Canada on September 5, 2024
It works! High quality feeling materials. It is a bit noisier than I had anticipated but might be because Iām not use to having a derailleur at all. Easy install. Reviews had me scared about alignment issues but it provided washers for spacing and ended up working perfectly
A.M.
Reviewed in the United States on September 4, 2024
shimano = 2 thumbs up
kev
Reviewed in Canada on September 19, 2024
this tensioner it's not adjustable and can not be used on all bikes specailly ebikes
Elwyn Anderson
Reviewed in the United States on November 19, 2024
Converted an old seven speed to single speed. Obviously needed a tensioner. This was perfect.
Vennall1
Reviewed in the United Kingdom on October 7, 2024
Thankyou what a Brilliant bit of kit perfect
Alan D.
Reviewed in the United States on April 5, 2024
Worked as advertised when installing a Nexus Internally Geared Hub. According to Shimano it also works with their Alfine line of IGH's. Installation is as strait forward as it gets. The 3 washers of varying widths included for setting depth on the Hangar were a big plus. Needed all 3 for setting up on a 135mm "O.L.D."(Over-Lock-nut Distance) Hub. Used a new Derailleur hanger as well since the stock one I had on hand was beat up and bent enough to affect the chain alignment. If you get this Tensioner and have trouble with alignment triple check that your hanger isn't bent. It should hang perfectly perpendicular to your drive side chain stay.
Jeff Rauland
Reviewed in the United States on July 17, 2023
This is meant for another type of bike, I think. But I bought it to try on my single speed mountain bike that I converted from a 1x10. It took a bit of trial and error, but I got the position right. Some of the cheap tensioners have a threaded mount for a single jockey wheel and a lock nut. This is OK, as you have infinite possibilities for side to side position. But they can loosen, and then you drop the chain. This one is fixed, but you can adjust it a bit with spacers. This seems to be much more stable. It does require some trial and error with your cog and spacers on the freehub body versus the spacers on the tensioner. But once you find the sweet spot, it is locked in.This is metal, not plastic like many. It has a solid build and is quite durable. It is not the easy solution for a single speed build, but it is the beast way to go.
Remi Greenwood
Reviewed in the United States on May 17, 2022
First and foremost the shipping was fast and tracking was on point. The idea with this tensioner is to line the pully with the rear cog. Don't worry about your front sprocket having a perfect line. Your chain won't jump off. All I had to do was reposition my spacers and cog to line up with the tensioner pully. Didn't even have to use the washers that were provided. About the Alfine tensioner. This is a good quality strong spring tensioner that will hold your chain steady and strong.
Steo di Camerano
Reviewed in Italy on August 27, 2021
Quello che volevo
nwrdr
Reviewed in the United States on July 22, 2019
The Alfine tensioner was an attractive solution at only $25, but in the end you get what you pay for. The adjustability of this tensioner was so limited, I couldn't even get it to remotely match my centered chain line. Skip this product and just go with the Surly version. Even a repurposed derailleur would work better.
Olga Bavrlic
Reviewed in Canada on February 17, 2019
Execellent product. Using with ebike on single gear freewheel.
Ricfiggz
Reviewed in the United States on April 6, 2018
I don't have any shimano alfine equipment spec'd on my rig. But, that didn't stop me from using it as a chain tensioner. It works and it's reliable. Granted, it doesn't look as clean as your typical single speed tensioner. But, I haven't had the best of luck with those types of tensioners. But, this works just fine with any gear combo. Even though, it does not look a single speed set-up.
Bryce
Reviewed in the United States on May 5, 2010
I bought this to tension my singlespeed. Little did I know that it's not compatible with a 1/8" chain. I guess I should have read the description better. It still works with my 1/8" chain, but it makes a bunch of noise, so I had to order another chain tensioner. Very high quality though. My biggest complaint is that it only has 5mm of chainline adjustability. It got 3 stars for lack of adjustability, not for 1/8" incompatibility (although that would be nice).
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