ACS Main Drive Single Speed Freewheel (17T x 1/8-Inch)

this free wheel is the right tooth count for the project bike.

The part I received looks nothing like the picture in the ad. I have an ACS main drive on another bike that has worked perfectly for the last eight years with a lot of abuse. This piece however, is junk! After install it makes my rear hub sound like it's grinding apart. It's a total piece of junk, save your money. I wish I had.

This drive, as mentioned by previous buyers, slips while pedaling. It is actually dangerous to ride and a hassle now to remove because I do not have the tool to do so. The slipping action at some points turns into a freespin where there is no drive traction at all and you are pedaling air, lots of fun.

I bought 2 one worked fine but I can tell it was gonna start making noises like 2nd one that came with it, the 12$ 17t on amazon was more reliable

The freewheel arrived yesterday, and opening it I noticed it was covered in blemishes and rust spots.Picking it up and playing with it, the bearings inside were rattling around like beans in a maraca.Returned it.

Showed up with rust on it. It's out of round, sloppy, and overall a piece of crap. I wouldn't be surprised if its counterfeit.

This drive slips when pedaling. I had to toss it and spend more on a nicer unit. Too bad ... bummer

Failed after one 38km commute. Sporadic engagement made for dicey riding. Amazon accepted my return. Save up and get a White Industries freewheel, its worth the price.

Great