Shimano Tourney FC M131 chainset with chainguard 48/38 / 28T 170 mm

I was given a MTB which was gathering dust, swapped the knobbly tyres for Schwalbe city jets, discovered that on the flat and downhill I was running out of gears and replaced the 42/34/24t chainset with this. It's excellent quality for an entry-level part (better than the part it replaced) and gives me the extra top-end gear that I needed - result; about 5% time improvement on roads/tracks and no more frantic pedalling to no effect! Well worth the mod, however, you will need a crank puller (else risk trashing your bearings with hammer and chisel). I found that the distance between cogs was slightly greater, so the 42t derailleur on the bike couldn't quite cope - I got a compatible one from the same seller (their *bay shop as it happens) and a cable locally; and now my front gear changes are sweeet. To keep everything running well a slightly longer chain is also in order.If you're going down this route - don't forget a chain splitter.

Needed to replace the chainset on my Claud Butler hybrid as the chain had begun to slip under load, and an internet search revealed this as the cheapest option. The hardest part of fitting was removal of the old set. You'll need an Allen key and a bike crank removal tool and a bit of determination, but fitting is a doddle, it simply slides onto the square shaft and is attached using the Allen key.This was an almost perfect fit requiring only very slight adjustment of the front derailleur to get the gear change to be perfect.I also replaced the chain and the freewheel at the same time as they all tend to wear together and I've found it a false economy to try to get by.It will be interesting to see how durable this chainset is, but so far I'm happy to have cured the chain-slip.

This replaced the worn out cogs on my Trek bike. They are an exact copy of the originals. I bought them in a set with chain and front ring. Good value. A mobile bike repair guy fitted them for £30 quid. This product is bigger than the original so the gear shift thingy had to be moved up by half an inch. The gearing is now a little higher (i.e. a bit harder to pedal) but I've got used to it.

It is a good chainset, surprisingly light for the price. I thought the chainguard would be stronger, I'm worried that with time it may easily break off, but it's what I needed.

This arrived in good time. I have to say that upon attaching it to the bike the cog teeth on the innermost cog came into contact with the bike frame. With the old chainset the teeth were at least 5 mil clear and the cog could move freely as it should. This would suggest that the square tapered hole was ever so slightly larger than that of my old chainset. I found a 'work around' but this was very disappointing.

given five star because all in working order easy to fit on no needed to change chain or or the rear cogs cassetteso spot on keep doing it to have it available recommend to anyone especial to those who had a similar cogs-setthere is certainly no issue can elevate. Thanks for let me have my bike back with considerably 5times lower priceon the similar quality level.

I'm surprised at some of the problems people have had with this. As far as I was aware the only difference is in the number of teeth to it is possible some bikes may struggle to fit this if they previously had a 24t/32t/44t on it. The inner 28t may catch on the chainstay.The main problem I had was getting the old one off - ended up using a hacksaw. I made sure I put some copper anti seize on the tapers when I replaced it so I hopefully won't have the problem next time.I notice a FC M171 version is available, does anyone know that the difference is, the m171 is considerably more expensive.

although this gave the bike more power and push, it's downfall is the colossal weight of the damn thing. i gave up and swapped it out for another brand and its lighter and better. i guess you get what you pay for. this is ok for a commute bike or occasional rider but not any serious cyclist