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Specialized Rockhopper 27.5 Mountain Bike

  • Specialized's A1 Aluminium frame gives a clean-cut look whilst also being nimble & lightweight
  • Built for grip and reliable control on the trails with wide 2.3 inch Ground Control Sport tyres
  • Equipped with a Shimano & MicroSHIFT combo for a robust and reliable ride with a 2x8 drivetrain
  • Featuring geometry designed to be fast & agile for those tight turns, sharp climbs & downhills




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Product Information

Specialized Rockhopper 27.5 Mountain Bike

Specialized designed the Rockhopper 27.5" to meet your needs out on the trails. Whether you're out tearing up a single track or exploring your local forest routes, the Rockhopper's got you covered. Specialized's A1 Aluminum frame provides you with a not only a lightweight frameset but also a clean-cut look with altered tube shapes. With internal cable routing, the Rockhopper has a smart-looking and professional finish. To keep your riding smooth and reliable, Specialized kitted out the Rockhopper with a Shimano and MicroSHIFT combination for a robust and reliable ride with a 2x8 drivetrain as well as Radius CX7 mechanical disc brakes to keep the control at your fingertips. When it comes to handling, you can trust the Rockhopper with it's swift and agile ability to take the tight turns fast while keeping you stable in a riding position designed for comfort during those long rides. Finally, for ultimate grip and control, Specialized equipped the Rockhopper 27.5" with a wide 2.3 inch Ground Control Sport tyres to keep the trail feel thrilling.

Full Specification



The Rockhopper

A heart of gold, presented in Specialized's lightweight yet durable Premium A1 Aluminum, the Rockhopper features butted aluminum tubes in order to keep weight low and strength high, all while providing increased standover clearance, slick internal cable routing and dropper-post compatibility. With the goal of making sure that the Rockhopper offers both the best fit and best performance for every person, no matter their measure, Specialized has paired each Rockhopper frame size with the optimal wheel size. The result is a Rockhopper to fit every rider and the assurance that every Rockhopper is rolling on the best-handling wheel for its frame size.


Superior Shifting 

Settle in for any climb with the Shimano Altus 8-speed drivetrain, with two chainrings and a wide-range cassette for the perfect gear on any terrain. Ergonomic Rapidfire Plus™ trigger shifters offer precise gear changes without changing your grip compromising control. A durable Formula freehub and SunRace 8-speed cassette keeps you rolling smoothly without putting up a fuss.



Specialized chose the front and rear tyres to optimise around the Rochkopper wheel’s purpose. The front and rear Ground Control Sport tyre provide aggressive side knobs that offer grippy cornering bite in varied conditions. With Rx Tune on Rockhopper, the SR Suntour XCE brings size-specific travel and spring rates to the show in a performance that’s sure to impress while also ensuring consistent geometry, handling and suspension performance, regardless of frame size.



Frame A1 premium butted alloy, zero-stack head tube, internal cable routing, 135x9mm forged dropouts, chainstay-mounted disc brake, replaceable alloy derailleur hanger, stealth rack mounts, dropper post compatible

Seat Binder - Alloy, quick release, 34.9

Fork - SR Suntour XCE 27.5, 28mm

Bottom Bracket - Square-tapered, 73mm, internal bearings, 122.5mm spindle

Seatpost - Alloy, 12mm offset, 2-bolt clamp, 30.9mm



Rims - Specialized alloy, disc only, double-wall, 25mm inner width, 32h

Front Hub - Formula 6-Bolt, disc, 100x9mm spacing, quick-release, 32H

Rear Hub - Formula 6-Bolt freehub, disc, 135x9mm spacing, quick-release, 32H

Front Tyre - Ground Control Sport, 27.5x2.3"

Rear Tyre - Ground Control Sport, 27.5x2.3"



Crankset - Stout 2x, forged alloy

Chainrings - 22/36T

Shift Levers - microSHIFT, TS39-8R, 8-speed

Front Derailleur- Shimano Altus FD-M315

Rear Derailleur - Shimano Tourney RD-TX800, 8-speed

Cassette - SunRace, 8-speed, 11-34t

Chain - KMC X8 EPT, anti-rust coating, 8-speed w/ reusable Missing Link™



Front and Rear Brake - Radius CX7, mechanical disc, 160mm



Handlebars - Stout Mini Rise, alloy, 9-degree backsweep, 15mm rise, 31.8mm

Stem - Stout 3D-forged alloy, 31.8mm, 6-degree rise

Saddle - Bridge Sport, Steel rails, 155/143mm

Grips - Specialized Trail Grips, lock-on