Shimano SM-RT56 6 Bolt Disc Rotor - 180mm
Shimano SM-RT56 6 Hole Hydraulic MTB Brake Disc - 180mm This brake disc is designed for mountain biking like all-mountain and cross-country. With its diameter of 180mm and its steel structure, it offers very good longevity and very high resistance to overheating. For this, the ventilated shape with multiple openings all around the braking surface foresees good ventilation and performance of choice even in the event of prolonged braking. This 6-hole mount disc can be mounted on the front or rear and is only compatible with resin brake pads.
Shimano SM-RT56 6 Hole Hydraulic MTB Brake Disc - 180mm This brake disc is designed for mountain biking like all-mountain and cross-country. With its diameter of 180mm and its steel structure, it offers very good longevity and very high resistance to overheating. For this, the ventilated shape with multiple openings all around the braking surface foresees good ventilation and performance of choice even in the event of prolonged braking. This 6-hole mount disc can be mounted on the front or rear and is only compatible with resin brake pads.
Shimano SM-RT56 6 Hole Hydraulic MTB Brake Disc - 180mm This brake disc is designed for mountain biking like all-mountain and cross-country. With its diameter of 180mm and its steel structure, it offers very good longevity and very high resistance to overheating. For this, the ventilated shape with multiple openings all around the braking surface foresees good ventilation and performance of choice even in the event of prolonged braking. This 6-hole mount disc can be mounted on the front or rear and is only compatible with resin brake pads.
Shimano SM-RT56 6 Hole Hydraulic MTB Brake Disc - 180mm This brake disc is designed for mountain biking like all-mountain and cross-country. With its diameter of 180mm and its steel structure, it offers very good longevity and very high resistance to overheating. For this, the ventilated shape with multiple openings all around the braking surface foresees good ventilation and performance of choice even in the event of prolonged braking. This 6-hole mount disc can be mounted on the front or rear and is only compatible with resin brake pads.
in 33 offers
The lowest price for Shimano SM-RT56 6 Bolt Disc Rotor - 180mm right now is $21.50 at Off Road Bikes Online, compared across 29 retailers.
The all-time low was $13.34 on 16 Feb 2025 β today's price is 61% above the lowest ever. It has been notably cheaper before β worth setting a price alert.
Prices last updated 29 Oct 2026.
Last updated at 29/10/2026 06:15:24
Motorcycle Brake Disc Rotor SM-RT56 6 Bolt Disc Rotor - 160mm 180mm(RT56 180MM 1PCS)
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Shimano Disc Brake Rotor Deore SM-RT56 6-Bolt 180mm
Delivery between 2β5 Nov $10.45
Shimano SM-RT56 180 mm disc Diameter 180 mm
Delivery between Fri β Mon $39.66
Shimano Disc Brake Rotor SM-RT56 6 Bolt 180mm
Free delivery between 3β11 Nov
Shimano Deore SM-RT56 180mm 6-Bolt Disc Rotor
Delivery between 4β6 Nov $14.95
Shimano Deore SM-RT56 6-Bolt Disc Brake Rotor
Delivery between 2β5 Nov $9.90
Shimano Deore SM-RT56 6-Bolt Disc Brake Rotor
Delivery between 2β5 Nov $9.90
Shimano Deore SM-RT56 180mm Disc Brake Rotor 6-Bolt Mount
Delivery $109.73
Shimano SM-RT56 Deore 6-Bolt Disc Rotor - 180mm
Delivery between 3β5 Nov $9.95
Shimano SM-RT56 Deore 6-Bolt Disc Rotor - 180mm
Delivery between 4β12 Nov $9.95
originally posted on bike-components.de
I bought the 180mm variant for my budget touring bike, combined with an Avid BB5 and Alhonga drop bar levers I get plenty of power, and did not overheat while descending a mountain with constant braking and roughly 105 kg total weight (me + bike and luggage), which was in the hot summer sun.That is while we had to stop multiple times to let my girlfriend's rims cool down because her rim brakes were overheating.
originally posted on bike-components.de
Awful rotor, I've used it with Shimano Resin pads that came on M615 brakes, the bite was horrible, but that was due the pads, so I swapped to metallic pads, which wore the rotor fast, these really are just for resin pads as claimed.They overheat fast, upgrading to Hope Tech Floating rotors made a huge difference, they did not get as hot. and had good braking performance for a logn time, it took a long time before I had to sand them with 100 Grit sand paper. I had them in 160 rear and 180 front.they kept getting glazed.but with the SM-RT56 it did not help at all, the rotor just kept overheating.
originally posted on bicyclewarehouse.com
Lots of surface area for the brake pads to grab onto and numerous holes to dissipate the heat. Whats not to like? Installed easy with the 6 bolts that were included. Instructions on the Shimano website are easy to follow.
| Bicycle Type | Mountain Bike |
| Brake Type | Disc brake |
| Groupset Compatibility | Shimano Deore |
| Durability | Resists wear |
| Corrosion Resistance | Resists corrosion |
Motorcycle Brake Disc Rotor SM-RT56 6 Bolt Disc Rotor - 160mm 180mm(RT56 180MM 1PCS)
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Shimano Disc Brake Rotor Deore SM-RT56 6-Bolt 180mm
Delivery between 2β5 Nov $10.45
Shimano SM-RT56 180 mm disc Diameter 180 mm
Delivery between Fri β Mon $39.66
Shimano Disc Brake Rotor SM-RT56 6 Bolt 180mm
Free delivery between 3β11 Nov
Shimano Deore SM-RT56 180mm 6-Bolt Disc Rotor
Delivery between 4β6 Nov $14.95
I bought the 180mm variant for my budget touring bike, combined with an Avid BB5 and Alhonga drop bar levers I get plenty of power, and did not overheat while descending a mountain with constant braking and roughly 105 kg total weight (me + bike and luggage), which was in the hot summer sun.That is while we had to stop multiple times to let my girlfriend's rims cool down because her rim brakes were overheating.
Awful rotor, I've used it with Shimano Resin pads that came on M615 brakes, the bite was horrible, but that was due the pads, so I swapped to metallic pads, which wore the rotor fast, these really are just for resin pads as claimed.They overheat fast, upgrading to Hope Tech Floating rotors made a huge difference, they did not get as hot. and had good braking performance for a logn time, it took a long time before I had to sand them with 100 Grit sand paper. I had them in 160 rear and 180 front.they kept getting glazed.but with the SM-RT56 it did not help at all, the rotor just kept overheating.
Lots of surface area for the brake pads to grab onto and numerous holes to dissipate the heat. Whats not to like? Installed easy with the 6 bolts that were included. Instructions on the Shimano website are easy to follow.
Exactly what was needed/expected. Like all things Shimano, good value proposition and WORKS!
Fine rotors at a great price. I do get some squealing but thereβs more to squealing than just rotors.
Great product. Quick shipping. OEM packaging.
Excellent, high quality basic rotor for urban and commuter bikes. Keeps your cost low while providing solid performance .
The original disc was machined flat with sharp, square edges and precision holes but the replacement was cheaply made by just stamping it out of sheet metal. While it is flat, the edges are curved, not square and the holes have a slight protrusion on the back side that was left by the stamping process that causes a noise when the brakes are applied. It does do the job of stopping but not as good as the original.
This rotor works great with the basic Shimano font disc brake. Includes all required hardware. Even had thread locker pre- installed!
I've just put these on my girl friends bike so it's a little early to give a detailed review. These went on a decent mountain bike and we are rec riders. So far we've only ridden on pavement and a little gravel in good conditions. I put on newer wheels and slick style tires so I added the new rotors to give a niece new feel and appearance. So far these are have been great and the price point is good as well.
| Bicycle Type | Mountain Bike |
| Brake Type | Disc brake |
| Groupset Compatibility | Shimano Deore |
| Durability | Resists wear |
| Corrosion Resistance | Resists corrosion |
