M-Wave Aluminum Chain Tensioner for Single Speed Sprockets

works just as advertised

items as described, fast delivery

listen i might not have the same problem as everyone else but for me, the washer that connects to the spring didnt fit on my derelluir hanger, however i cut it down with a dremel and it worked fine. its ok for the price but there are much better out there.

The cog is plastic, and has no bearings, it sits very loosely on the shaft and wobbles at higher chain speeds. The arm and spring mount are fine, and it is possible to install a proper cog and new shaft for quiet, low friction use. As it comes from the factory, I do not recommend it.

Umm...This tensioner looks good and will work for awhile I guess yet...its loosey-goosey on the mainpivit and the "cog wheel" must use a low quality bushing cause it does not turn freely. I will disassemble to see if I can lube to makeit worthy of this price. Just glad I did not pay $30 for it!

It keeps the chain tightened just fine but the cog is fairly cheep and when I peddle the cog goes crooked and rubs against the chain guide. Super annoying noise but other than that it's lasted for a while now.

Noisy, but works great so far, haven’t dropped a chain yet

Llevo un mes con él, en una bicicleta con patita para velocidades que uso SingleSpeed con una cadena de medio eslabón, trae un broche para evitar que la cadena se salga, pero al ser una cadena de medio eslabón es demasiado delgado y no le quedaba,más allá de eso no tengo ningún problema. La tensión en la cadena es buena, no se oye que la cadena golpe contra el cuadro y no he descandenado ni una sola vez (uso un plato Zee de 36T junto con un piñon SixPack de 15T). Se ve muy bonito y de hecho me ha servido para mantener la cadena en su lugar a la hora de limpiar el cuadro.No trae manuales ni nada, todo se aprieta con llaves alenActualización 5 meses después, el resorte ha perdido tensión y el eje que sostiene la rueda libre golpea constantemente contra el cuadro, sobre todo al saltar, le puse goma y cinta de aislar para resolver el problema hasta que encuentre un nuevo resorte