Specifications
- Frame
- Aluminum
- Brakes
- (F) Shimano BR-MT200, hydraulic disc, 180mm / (R) Shimano BR-MT200, hydraulic disc, 180mm
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At a glance
Key differences
Supported differences are shown below. Data limitations are labeled separately.
- Frame geometry
2025 Specialized Rockhopper has 7 mm more reach than 2020 Specialized Rockhopper in the selected sizes.
More reach puts the head-tube reference farther forward, not necessarily the hands.
- Frame geometry
2025 Specialized Rockhopper has 11 mm more stack than 2020 Specialized Rockhopper in the selected sizes.
More stack places the frame reference higher, not necessarily the handlebar.
- Handling
2025 Specialized Rockhopper has a 1.3° slacker head-tube angle than 2020 Specialized Rockhopper in the selected sizes.
Fork offset, tire size and wheelbase also affect steering; head angle alone is not a handling verdict.
Selected-size geometry
Geometry overlay
Frames share one scale and a bottom-bracket alignment. Size labels differ by brand; schematic drawing aids are identified below.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Gearing unavailable for this size.
Gearing unavailable for this size.
How it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Complete specification tableShows different published values and gaps where a bicycle lacks data. Different wording reflects source language, not necessarily different components. Swipe for more columns.
Specification
2025 Specialized Rockhopper
2020 Specialized Rockhopper
Overview
Model Year
2025
2020
Brand
Specialized
Specialized
Model
Rockhopper
Rockhopper
Bicycle Type
Mountain
Mountain
Original MSRP
From $649.99
$550.00
Colors
Gloss Sage Green / Olive Green, Satin Cast Lilac / Sea Foam, Satin Slate / Cool Grey
Dusty Lilac/Black, White/Black, Satin Black/Spruce, Flo Red/Tarmac Black
Sizes
XXS, XS, S, M, L, XL, XXL
XS, S, M, L, XL, XXL
Weight
13.87kg (30 lb, 9.2 oz)
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Frameset
Frame Construction
Specialized 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
A1 alloy, Sport XC 29 Geometry, zero-stack head tube, internal cable routing, 135x9mm forged dropouts, chainstay-mounted disc brake, replaceable alloy derailleur hanger
Frame Material
Aluminum
Aluminum
Fork
SR Suntour XCM 27.5/29, 30mm stanchions, Rx Tune, coil spring, QR, 80/90/100mm travel (size-specific), 42mm offset
SR SunTour XCT 30, Rx Tune, coil spring, 80/90/100mm travel (size-specific), 46mm offset
Drivetrain
Shifters
Shimano Altus, RapidFire Plus, 9-speed
Shimano EF505, hydraulic, 2x8-speed
Front Derailleur
Shimano Altus FD-M2020 2-speed
Shimano Altus FD-M315 2-Speed
Rear Derailleur
Shimano Rear Derailleur, RD-M2000, Altus, 9-speed, Shadow Design
Shimano Tourney RD-TX800, 8-speed
Crankset
Stout 2x, forged alloy
Stout 2x, forged alloy
Bottom Bracket
Square-tapered, 73mm, internal bearings, 122.5mm spindle
Square-tapered, 73mm, internal bearings
BB Shell Width
73 mm
73 mm
Cassette
SunRace, 9-Speed, 11-36t
SunRace, 8-speed, 11-34t
Chain
KMC X9EPT, 9-speed, anti-corrosion coating w/ reusable Missing Link™
KMC X8EPT, 8-speed, anti-corrosion coating w/ reusable Missing Link™
Pedals
Specialized Flat Pedal
Specialized Body Geometry Fitness, platform, plastic
Brakes
Brakes
(F) Shimano BR-MT200, hydraulic disc, 180mm / (R) Shimano BR-MT200, hydraulic disc, 180mm
(F) Shimano BR-MT200, hydraulic disc / (R) Shimano BR-MT200, hydraulic disc
Cockpit & Contact Points
Handlebar
Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm
Specialized Alloy XC minirise, double-butted alloy, 8-degree backsweep, 6-degree upsweep, 10mm rise, 31.8mm
Stem
Stout 3D-forged alloy, 31.8mm, 6-degree rise
Stout 3D-forged alloy, 31.8mm, 6-degree rise
Saddle
Bridge Sport, Steel rails, 155/143mm
Specialized Bridge, size specific, 143/155mm
Seatpost
Alloy, 2-bolt clamp, 30.9mm
Alloy, 12mm offset, 2-bolt clamp, 30.9mm
Wheels & Tires
Hubs
(F) Formula 6-Bolt, disc, 100x9mm spacing, quick-release, 32H / (R) Formula SP-2125, 6-Bolt freehub, disc, 135x9mm spacing, quick-release
(F) Shimano, Center Lock™ disc, 9x100mm spacing, quick-release, 32h / (R) Shimano FH-TX505, Center Lock™ disc, 9x135mm spacing, quick-release, 32h
Rims
Specialized alloy, disc only, double-wall, 25mm inner width, 32h
Alloy, disc only, double-wall, 25mm inner width
Spokes
Stainless, 14g
Stainless, 14g
Front Tire
Fast Trak Sport
Ground Control Sport, 29x2.3"
Rear Tire
Fast Trak Sport
Fast Trak Sport, 29x2.3"
Wheel Size
26; 27.5; 29
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Geometry · choose a size for each bicycle
Geometry size
Reach
425 mm
418 mm
Stack
616 mm
605 mm
Effective top tube
608 mm
594 mm
Head-tube angle
68.5°
69.8°
Seat-tube angle
73.5°
73.8°
Seat tube
400 mm
430 mm
Head tube
95 mm
95 mm
Chainstay / rear center
440 mm
440 mm
Wheelbase
1128 mm
1110 mm
Bottom-bracket drop
62 mm
57.5 mm
Bottom-bracket height
310 mm
312.5 mm
Standover height
754 mm
776 mm
Fork offset / rake
46 mm
51 mm
Front center
696 mm
676 mm
Trail
97 mm
82 mm
Wheel size
29in
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Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.