SHIMANOSMRT56M Disc Brake

Genuine ItemDisappointed with packaging as it was flimsy should be stiffer packaging

Very high quality rotas. A strong design with lots of cooling holes. Easy to fit. Substantially heavier than the old ones I removed. Lots of extra stopping power! I'm using these on a hybrid bike.Amazon was the cheapest place I could find these rotas. I've previously tried bikehut and lifeline branded rotas, but found they were of a more inferior quality. It it always well-worth combining new rotas with new sets of brake pads at the same time. I found these Clarks ones (also sold by Amazon) are a good match Clarks Organic Disc Brake Pads for Shimano Deore Br-M515/M475/M525/M465/M495, Tektro Auriga Comp./Dracom Moto Aquila/HDC-300/MotaExpect your brakes to be very squeeky for the first couple of miles. They need an opportunity to bed-in and for any residue oil / solvents applied at the factory to burn off.

Great quality discs. Bought to replace a bent disc on my Wife's new boardman hybrid. The bike was collected from a long way from home and we didn't notice the bent disc until we got home. At this price and with a quick amazon prime delivery it was a better option than taking the bike back to the shop to get repaired.

Upgraded from a Shram 160mm disc to this 180mm. Stopping power is good, wear seems to be OK despite being installed on a heavy steel framed E-bike. Took a little longer to bed this disc in than my previous one, however once it settled in it performed great, and so far not a single squeak or squeal. Resin pads only though, which is a shame as I feel a sintered pad could really help.Happy with the upgrade, and my bike stops much easier now.

My bike originally came with the centre-lock equivalent to the SM-RT56 rotors. I did not appreciate how good they were until I had to have my wheels replaced, one after the other. I became frustrated by the reduced effectiveness and uneven pad wear of the replacement 6-bolt rotors supplied by the bike shop (two different brands), so I purchased these 6-bolt Shimano SM-RT56 rotors and a fresh set of Shimano B01S resin pads, resulting in an immediate return to the original performance of the braking system. Well worth the price.This review is specifically of the SM-RT56 6-bolt rotors. My star rating and review DOES NOT APPLY to any of the other products which have subsequently been merged into the same product listing.

Spirograph produced the template for this.

Brilliant quality, bought these to replace the original disc rotors that came with my Cannondale Badboy after contamination caused them to slip.These rotors happen to be the same rotors that came on my new bike Cannondale CAAD12 2019. The stopping power along with my new pads is brilliant and feels like new again.The package came with the rotors, 6 bolts & two spacers.At this price you can afford to replace them once a year to keep your brakes sharp.

I'm struggling to believe it's genuine. The process of punching out the shimano disk is perfect on a genuine this is not quality at all. Plus the anti loose plates were missing. To top of all that because it wasn't in a box just in a bag and in a flimsy thin envelope the rotor is slightly bent through postage.Well done you lost a customer for the sake of a box.