The 2021 Specialized Rockhopper Sport 27.5 is a 27.5″ aluminum frame hardtail crosscountry bike with modest components.
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2 × 9 — 18 speed
The Rockhopper Sport 27.5 is easier to ride up hills than similar bikes.
The Rockhopper Sport 27.5 is geared about the same as similar bikes for riding downhill.
Estimated spec level of the Rockhopper Sport 27.5 compared to other crosscountry bikes. 99 Spokes analyzes the build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more to estimate the overall spec level of each bike.
|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|
|Fork||SR Suntour XCM 27.5, 30mm stanchions, Rx Tune, coil spring, QR, 80/90/100mm travel (size-specific), 42mm offset|
|Bottom Bracket||Square-tapered, 73mm, internal bearings, 122.5mm spindle|
|Stem||Stout 3D-forged alloy, 31.8mm, 6-degree rise|
|Handlebar||Stout Mini Rise, alloy, 9-degree backsweep, 15mm rise, 31.8mm|
|Saddle||Bridge Sport, Steel rails, 155/143mm|
|Seatpost||Alloy, 12mm offset, 2-bolt clamp, 30.9mm|
|Grips||Specialized Trail Grips, lock-on|
|Rear Derailleur||Shimano Altus, RD-M2000, 9-speed|
|Front Derailleur||Shimano Altus FD-M2020 2-speed|
|Crank||Stout 2x, forged alloy, 22/36T|
|Shifters||Shimano Altus, RapidFire Plus, 9-speed|
|Cassette||SunRace, 9-Speed, 11-36t|
|Chain||KMC X9EPT, 9-speed, anti-corrosion coating w/ reusable Missing Link™|
|Brakes||Tektro HD-M275, hydraulic disc, 180/160mm|
|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|
|Tires||Ground Control Sport, 27.5x2.3"|