MTB Crank Arm Set 104 BCD Square Taper Mountain Bike Crankset 152mm 165mm 170mm

Perfect for my kid's bike. Chainring is totally standard 104BCD, so if you want a different size than the one you ordered with it, anything with that standard BCD will bolt right on. Chainring can be mounted to front or back of spider, so you can get the chainline right, depending on your needs. 110mm bottom bracket is not wide enough for the arms, FYI, and 122mm is probably going to be too wide for you, so look for something around 113mm or so, again, depending on your needs.

These work great and the smaller size is just what i needed.

This was a good value crank for my son’s Giant TCX 24” cyclocross bike. That bike came with a 32T crankset with normal teeth and was geared too low for my liking and had some chain drops. That crank did NOT have a spider so I had to replace the whole crank rather than just a new chainring.This works well. Fit and finish is at least as good as what Giant supplied OEM. Crank arms are short enough that a kid can use them. Included 36T chainring seems decent and has fine chain retention. If I choose to change it later 104BCD chainrings are easy to find.However, mounting with the 119mm bottom bracket that bike came with pushed the chainline way too far out and gave a wide Q factor. I put a 103mm BB on as a replacement which brought these crank arms tight, but still spinning freely, to the 68mm threaded shell. Chainline looks perfect with the chainring mounted on the inside of the spider aligning with the 4th or 5th gear of the 8 speed cassette. 107-110 may work for other bikes but for me 103 was correct.In short, seems to work well but you may need to play with axle length and chainring mounting location to get a good chainline.

This crankset fit the bill nicely but the chainring was too small so I ordered a bigger one also. A choice on chainring size would be nice therefore 4 stars.

Worked perfect for Adventor. Changed only to shorten pedal strike on the original. Went on smoothly and is working great so far

I just got this today. I installed it and went for a short ride. I've also recently got thinner pedals for power transfer and ground clearance. I was concerned that I may loose leverage going from 175mm to 152mm. However dropping two chain rings seems to make up for it. I feel more powerful and comfortable making smaller circles. I'm thinking about trying a larger chain ring but it feels great. For this price you should give it a shot. My 3x crank also has a 38T ring and I still feel better than using the same gearing.

There are very few options for 152mm square tapered cranksets, especially in aluminum. This is well made considering it is basically a no name and all aluminum where with most budget bikes usually come with steel cranksets. It looks better and sheds respectable unsprung weight. I did this to convert my son's 24" Mongoose Durham to a 1x7 (was 3x7 21 speed). I bought it with the 34tooth, but ended up swapping for a Deckas 32T for easier peddling. Neither the 34 or 32 had any issues with the chain clearing, although if doing a similar swap, use the frame side mounting option, not the crank side, to get the chain line correct. Another person did a similar swap on the same bike and mentioned it shed a couple pounds. It is a quite noticeable difference, but when measured, is only about 1.2 lbs total weight savings. Substantial for a 24" bike, but thought I would clarify actual benefits. Overall great purchase if looking to do a 1x conversion.

These seem like some really good cranks. I converted my drive train to a 1x so the 152mm length gave some weight savings and more pedal clearance vs the set my bike came with. Also wanted the 104bcd style for ease of chainring replacement. As another stated, it is so difficult to find shorter cranks and I'm so glad to come across these as I'm not ready to invest in short cranks that will fit a hollowtech bb. Plus I'm 5'1" and now my heels arent kicking my rear everytime my leg is at the top of the pedal stroke.