Reviews over the

Shimano Ultegra R8000

It is fine chainring fits exactly fast delivery

Changing the blade is very easy: just loosen a few Torx bolts and the old blade comes off. The new one is back on in no time.

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Very good product

Had a 50T now a 52T had to readjust center derailleur but shifts well to this slightly larger blade

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Excellent purchase

Top chainring. Easy to assemble with the right tools.

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Shimano ultegra is always good. Mantel again had these in stock the fastest. (Corona perils) Great to get an email then so the coffee grinder could be converted back to a silent drive.

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More suited to my level

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Super gear of very good quality. Easy to assemble. Very fast shipping

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Everything top notch, thanks!

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At the top mantel as always we are well warned sir the order and possible delay

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Going to replace my 52-36 with 50-32 unfortunately the 50 is not available

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Very happy with Mantel. Will definitely use again.

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Initial purchase - in stock, competitively priced, securely delivered - five stars

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Very good purchasing experience

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Recommended do water promise super service

Exactly what I needed and at a good price. I seem to be getting through outer chain rings rather more frequently than I like. I usually just buy the whole chainset, but this time bought just the worn part which obviously saved me some money. Would also like to point out the excellent and speedy service by Mantel (10 stars for that). I usually buy from a competitor (name beginning with W) but they let me down badly earlier in the year, taking over a month to deliver a new chain. Assuming prices remain comparable, I will be using Mantel going forward.

Pros & Cons

Fast efficient and at a good price!

Easily fitted chainrings to cranks, once fitted shifting gear was effortless again and the front mech only needed slight adjustment from the 50/34 chainrings which were on previously. Overall I am very pleased with the product.

Pros & Cons

Great product great service very quick delivery

Great rings, love them. Ligt and stiff. Only issue (my fault) I bought to replace a 6800 ring and they don't fit perfectly (lines dont line up) but that's fine.

It does what it says on the tin. Cheapest I could find online. Free delivery. All very easy

I needed to replace my Shimano chain rings and I prefer the 52/36 combination rather than the 50/34. Mantel offers these at prices better than anywhere else. Mantel are my go to internet cycling portal.

I changed my 52/36 compact to a 52/34 and it works perfectly, even though Shimano do not recommend it. The chain may go slightly loose when using the 34 ring and the very smallest cog on the cassette. But I never use that anyway. Perfecto.