SPECIALIZED
Rockhopper Expert
Rockhopper Expert
SKU:91825-3804
Low stock: 1 left
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Start with a painstakingly engineered Premium A1 Aluminum frame, add in modern geometry that keeps one eye on efficiency and the other on confident capability, and you have the rock-solid foundation of our best Rockhopper yet.
- A heart of gold, presented in our lightweight yet durable Premium A1 Aluminum, the Rockhopper’s butted aluminum frame features hydroformed top and downtubes to keep weight low and strength high, all while providing increased standover clearance, slick internal cable routing, and dropper-post compatibility.
- To ensure that the Rockhopper offers both the best fit and best performance for every person, no matter their measure, we’ve 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.
- Beautifully beastly, Shimano hydraulic disc brakes pack a mean bite but deliver their power with a refined, intuitive feel to make for a package that punches way above its pay grade.
- Keep things simple with a durable 1x SRAM drivetrain with plenty of range and a clutch-equipped rear derailleur that keeps your ride quiet—and your chain on.
- Pair dead-reliable hubs from Formula with our 25-millimeter internal diameter, hookless Stout rims for a strong, light, and durable wheelset hat trick.
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Technical Specifications
Frameset
Frame: 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
Seat Binder: Alloy, quick release, 34.9
Suspension
Fork: RockShox Judy, Solo Air, Turnkey damper, 46mm offset, QR, 80/90/100mm travel (size-specific), alloy steerer
Brakes
Front Brake: Shimano BR-MT200, hydraulic disc, XS-M 27.5: 160mm, M-XXL 29: 180mm
Rear Brake: Shimano BR-MT200, hydraulic disc, 160mm
Drivetrain
Shift Levers: SRAM SX Eagle, trigger, 12-speed
Rear Derailleur: SRAM NX Eagle, 12-speed
Cassette: SRAM PG-1210 Eagle, 11-50t
Chain: SRAM SX Eagle, 12-speed
Crankset: Stylo Cranks
Bottom Bracket: Square-tapered, 73mm, internal bearings, 122.5mm spindle
Wheels & Tires
Rims: Specialized Alloy, hookless, Tubeless ready, 25mm inner width
Front Hub: Formula DC-20, 6-Bolt, disc, 100x9mm spacing, quick-release
Rear Hub: Formula DC-22, 6-Bolt freehub, disc, 135x9mm spacing, quick-release
Spokes: Stainless, 14g
Front Tire: Ground Control 2BR 27.5/29X2.35
Rear Tire: Ground Control 2BR 27.5/29X2.35
Inner Tubes: OE Standard 40mm PV 650B/29x1.75-2.4
Cockpit
Stem: Stout 3D-forged alloy, 31.8mm, 6-degree rise
Handlebars: Specialized, alloy, 9-degree backsweep, 15mm rise, 31.8mm
Grips: Specialized Trail Grips, lock-on
Saddle: Bridge Sport, Steel rails, 155/143mm
SeatPost: Alloy, 2-bolt clamp, 30.9mm
Accessories
Pedals: Specialized Body Geometry Fitness, Platform, Plastic
Weight
Weight: 13.12 kg (28 lb, 14.8 oz)
Weight Size: MD
Geometry
| S | M | L | XL | XXL | |
| Crank Length | 170mm | 170mm | 175mm | 175mm | 175mm |
| Seatpost Length | 350mm | 400mm | 400mm | 400mm | 400mm |
| Handlebar Width | 720mm | 740mm | 740mm | 740mm | 740mm |
| Stem Length | 45mm | 60mm | 60mm | 70mm | 70mm |
| Saddle Width | 155mm | 143mm | 143mm | 143mm | 143mm |
| Stack | 607mm | 616mm | 626mm | 640mm | 654mm |
| Reach | 405mm | 425mm | 445mm | 465mm | 485mm |
| Head-Tube Length | 95mm | 95mm | 105mm | 120mm | 135mm |
| Head-Tube Angle | 68.5° | 68.5° | 68.5° | 68.5° | 68.5° |
| B-B Height | 310mm | 310mm | 310mm | 310mm | 310mm |
| B-B Drop | 62mm | 62mm | 62mm | 62mm | 62mm |
| Trail | 97mm | 97mm | 97mm | 97mm | 97mm |
| Fork Length (full) | 505mm | 515mm | 515mm | 515mm | 515mm |
| Fork Rake/Offset | 46mm | 46mm | 46mm | 46mm | 46mm |
| Front-Center | 672mm | 696mm | 719mm | 745mm | 770mm |
| Chain-Stay Length | 440mm | 440mm | 440mm | 440mm | 440mm |
| Wheelbase | 1105mm | 1128mm | 1152mm | 1178mm | 1203mm |
| Top-Tube Length (horizontal) | 586mm | 608mm | 630mm | 654mm | 679mm |
| Bike Stand-Over Height | 732mm | 754mm | 781mm | 820mm | 853mm |
| Seat-Tube Length | 360mm | 400mm | 450mm | 500mm | 560mm |
| Seat-Tube Angle | 73.5° | 73.5° | 73.5° | 73.5° | 73.5° |
Size Guide
| Height (cm) | Size |
| 130-145 | XXS |
| 142-155 | XS |
| 153-165 | S |
| 163-178 | M |
| 175-185 | L |
| 183-195 | XL |
| 193-206 | XXL |