Grin Technologies Universal Ebike Torque Arm For Front Hub Motors. Thick 1/4" Stainless Plate.

Well grin tech makes a lot of quality stuff. This thing is pretty up to snuff. It came pretty snug to my axle, though I am not sure of the exact science behind torque arms because it's not exactly a perfect fit up and down, it's a "universal" Installation was difficult with the hose clamps. I decided to cut them shorter which was a big mistake. I was sweating like crazy, grunting because of this little fateful decision, don't do what I did. The shrink wrap didn't stay, I wouldn't put it on there I am little sketched out by the bolt and lock nut that holds it all together I used an 11mm socket and 7/16 wrench which comes out to roughly 11.10 mm. It's all that I had but it worked. I am not sure how this bolt is going to not slide. I want to get a tac from a welder on that bolt. Other than that it seems really high quality steel. I just have to pray to God my flat prevention plan (FPP) is going to be solid because I just got 7 flats in a row on the motor wheel and I can't get another one without going balastic. So just so ya know if you have more than one of these it's a pain in the ass to get the wheel off! Try patching a flat with the motor on! 😂 Just crossing my fingers hoping this thing keeps my wheel in

If you are building an E-bike these are the torque arms you want. They are nice and thick, are well made and fit snugly on the hubmotor axle. I've tried others and most were loose on the axle. These torque arms work well, just order the correct ones, front or rear and enjoy your E-bike without having to worry about the axle twisting out. Tip, make sure you preload it against the rotation of the axle and use thread locker. Yes I do reccomend these torque arms!

It fits and works exactly like it is supposed to. I think it is too expensive for the little bit of stainless steel you get but it actually does what it is supposed to. I'm sure the sting of the price will fade in time but this thing looks like it will last forever.

Been using this on my 1000w 48v self built E-Trike for a year now - still Tough & solid - the only thing that would compromise its longevity would be inferior hose-clamps & the nut/bolt for the joint. BUT having said that I really think $35 & a two hose-clamp installation is overkill.

don't even bother using the bolt and nut provided. as with many other reviewers here, the bolt and nut don't match? and in trying to remove the nut, I broke the bolt. trip to the hardware store it is. everything else in the kit is solid.

Nicely made -- looks much sturdier than the cheaper Chinese stamped-metal ripoffs. But not exactly universal in terms of fit. I tried to use it on a Mongoose Dolomite -- a very popular fat-tire bike often used for electric conversions. On the wire side, my hub motor had a pre-installed torque washer. It would have been a pain to get those off due to the way it was wired, so I tried the other side where the disc brake is. The disc brake is in the way, no matter how you try to mount this thing. If it had wider slots, I could have mounted it on the disc brake braze-on. As it is, I ended up drilling to do sort of the same thing. It works, but it was sooooo close to being a much better solution than what I ended up with (see the picture).

I would maybe use some cheap eBay torque arms for a tame e-bike build. If you're like me and like acceleration and speed, and then realize that your front wheel walking away means you'll scare children for the rest of your life, maybe pay for quality and safety. Especially with front hubs. Grin also have many tutorials available online that you'll find helpful, amd they always respond to e-mail questions regarding their products' use. If you have a steel fork with a fender eyelet you may want to look at the V2, because the install is much cleaner with no hose clamps.

Unfortunately this did not fit my fork, but I was able to use v2 torque arms instead