UPANBIKE Mountain Bike Chainring Guard 104 BCD Aluminum Alloy Chain Ring Protector Cover for 32~34T 36~38T 40~42T Chainring Sprockets

I replaced my chain wheel with a smaller one for more gear reduction and needed to fill the gap between it and the chain guard. This was the perfect solution.

It will be great if you were mentioning how difficult it is to install it

This chain guard is completely flat. The mounts on the crank, screw holes were recessed and due to minimal surface area of the guard, was not able to drill holes through it directly. I had to align so the most surface area aligned with each screw hole, outlinethe hole onto guard & dremel out. Used stainless steel washers/ nuts and very flat head bolts to mount. With all tightened holds and looks great. Used cut off toolto trim bolt at the nut.

If your sprocket is a TruVativ and has an adjustment Pin on it. You will need the Machine your own notch on the ring or the Bolt holes will not align with the 104 BCD sprocket. Also it is made of a very soft aluminum and will bend very easy, so be careful. I had to order a set of spacers for the Bolt set that came with it, so it would not interfere with the deraler. I don't expect it to last too long, and will probably have to order one made of a stronger, thicker aluminum after it gets bumped by something. I will see how it holds up.

The product arrived as advertised. In order to adapt the chain guard to the crank, I flipped the chain ring to the inside of the crank arm and the guard to the outside of the crank. Doing so I was able to get enough chain clearance to make it work without washers. It’s pictured. My only complaint is that the chain guard isn’t red enough for my taste, I might repaint it to match the bike’s orangy-red accent paint.

i returned this product because the size was not right. but the product seemed well made.. but i was able to see hiw well it could have done against rocks on thr trail, but I think it would have been good enough.

Take note, this is a chainring guard so it's in addition to the existing chainring on the bike. With that, the bolts are too small for the guard. I had to buy longer chainring bolts separately to be able to use it which cause some delay in my setup.

Super crappy bolts, do not use! Included silver bolts rattled loose on first ride, and I tightened those suckers fiercely.Lightweight guard otherwise, decent metal, not quite flimsy but enough to create some barrier between ring and pants. Got a branded bash guard instead if you peace of mind from damage. Red matches well enough with typical anodized parts.

This does exactly what I bought it to do, keep clothing clean.I never use the 48 tooth outer sprocket of my 3 ring crank so I removed it and replaced it with the 40/42 tooth cover. Plenty of clearance around my 38 tooth 'middle' ring. I chose blue to match the bike, it is a beautiful dark blue metalic finish, darker than shown in the photos.The fixings supplied were poor quality, the 6mm allen key just ran around the inside of one of them.No, problem for me, I reused the original fixings.As observed in a previous review this is simply a 2mm flat plate. If you need more serious protection for your front gears find a sturdier product designed to withstand impact.

As described I ordered it for my 38 Tooth outer Chain ring and it fits on the 104 BCD although I used the slightly longer screws/bolts supplied !In use it is about 1mm above the top or 2mm Diameter larger than my chainring with chain in cog so acts as I wanted and is clear of the Front Derailleur . . . First ride without the old Bike clips . . . Yes trousers got a bit oily but nothing like they would have done and no snagging !Most important and what's missing is that it is a 2mm THICK FLAT Round PLATE !So if you hit it and bend it . . . Don't ride into Trees or Rocks ! ! !

Does the job, kinda.It's not only SUPER thin (maybe 1.5-2mm), but you can also see the edges of the crank 'shelf' (?) behind the guard.If you're doing technical/MTB stuff, it's not gonna protect your chainring at all if you bottom out hard.Pros - since it's super thin aluminium, it's VERY light: if you're more after something to stop your trousers getting caught, this would work fine for that.

This is an ok product.Good: it's metal, it's shiny. It looks like bling on a bike which is why you are even interested. If you prioritise form over function on this part, this is a fine choice.Less good: attachment is poorly throught through. You get 4 pairs of 2 items. One for each hole. That is a large, internally threaded tube with a lip, and a smaller, externally threaded tube, with a lip. What you don't get are bolts or washers, which is a shame, as I don't see any configuration of these parts that mean you can attach the product to the chain ring, at the correct space away from it, without supplying your own nuts, bolts and washers.Conclusion: I'm using it on my bike, but not without some bodging.

First up it's not a bash ring it's about 1.5mm thick. I got this to protect my trousers on my work bike and it's perfect for that. I would recommend, if you can, to buy the next size up from your chain ring. I have 36T and I purchased the 42T, as others say I doubt the matched size would cover much of the chain at all.