What Our Gearhead Experts Are Saying:"I swapped this cassette onto my gravel setup for more climbing range, and it’s been rock solid. Shifting is crisp even under load, and I love the versatility of the 11-40T option. It's light where it counts but durable enough to take a beating. After a few hundred miles, it still runs smooth and quiet."Whether we're grinding up a long gravel climb or bombing technical singletrack, the Shimano HG CS-M8000 Cassette delivers the precise gear we need, right when we need it. Built to balance performance and longevity, this cassette is a dependable upgrade or replacement for any Shimano or SRAM 11-speed drivetrain. With Rhythm Step gear progression that eliminates big jumps between cogs, it helps us maintain cadence through changing terrain. A smart mix of lightweight aluminum and durable steel cogs keeps things light without compromising strength, and wide-range options like 11–40T, 11–42T, and 11–46T give us the gearing we need to spin up steep grades or hammer flats without a second thought.

Nathan N (comprador verificado) –
Heavy but for the price, worth it to get extended range
A little on the heavy side, but it works for what it is and 1/4 of the price of the lighter models.Added it to my cyclocross bike, using Shimano Ultegra RD-6800 and a goatlink ([…]). Shifts through all the gears smoothly and I now can take my bike off-road on steep hills and still access all the gears to ride fast during ascents.
mppatton (comprador verificado) –
Shifting is still good even with the larger jumps between the 27,31,35 and 40T sprockets
Good value for a large cassette. I used a Wolf Tooth Roadlink and a long cage Shimano Ultegra derailleur to accommodate the 35 and 40 teeth sprockets. Now I can climb up extended 15-20% grades in my area sitting in the saddle at ~70 rpm instead od grunting at 40 rpm with my old 28T max set-up.
Erik (comprador verificado) –
Classic Shimano
Installed on 2015 Niner RLT9 9. I paired this with a 42T chainring and a GRX mech derailleur and have an awesome setup that climbs nearly anything. Spin out above 29 mph-fine for me.Install was a breeze.
Kim, YoungDuk (comprador verificado) –
Front chainring stage
At first I bought Shimano XT M8000 11-Speed 11-46, when it was delivered, I found it as front chainring 1 stage in the box. I has used 3 stages chainring in my bike. I requestes to refund it immediately. And then I bought new 1/2/3 11-40 again in Amazon. Last weekend I went to the South province to enjoy Bike Touring with our Team, I satisfied the feeling of shift on the hill.
Restless (comprador verificado) –
Good product.
High quality. Arrived ready to be installed. Arrived on time and well packaged. Works as expected.
Wayne Schindler (comprador verificado) –
Trek Emonde
Shamino quality,bought for trek emonde road bike climbing. Had to get bigger derailed, but smooth shifts, and gearing is perfect
OfficeSpace (comprador verificado) –
great granny gear option for 11spd
Shimano quality. That 40t bail out gear works great for big hills, goes well with Wolftooth RD extender. The bigger gaps between some cogs is not noticeable at all. There’s no negative going from 11-30 to 11-40.
Justin Hill (comprador verificado) –
Worked great on Salsa Cutthroat
Lasted through the tour divide, even with a chain that experienced heavy wear and had to be replaced. 11-40 was great with a 46-30 crank.