2025 Specialized Rockhopper Expert Features
Excuse the brag, but we’ve really outdone ourselves here. Proving that true trail-taming capability doesn’t have to come at an intimidating price—the Rockhopper Expert is the culmination of 30 years of redefining the relationship between value and performance.
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.
Pair that with a parts list that just doesn’t quit (can we get a shoutout for RockShox’s Judy SoloAir fork and Shimanos’s always-in-charge MT-200 hydraulic disc brakes?), and you have a tubeless-ready, SRAM NX 1x12-equipped Rockhopper that’s absolutely prepared to fly.
At a Glance
- 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.
Component Specifications
| 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 |
| Fork | RockShox Judy, Solo Air, Turnkey damper, 46mm offset, QR, 80/90/100mm travel (size-specific), alloy steerer |
| 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 |
| 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 | Standard, Presta Valve |
| Front Brake | Shimano BR-MT200, hydraulic disc, XS-M 27.5: 160mm, M-XXL 29: 180mm |
| Rear Brake | Shimano BR-MT200, hydraulic disc, 160mm |
| 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 |
2025 Specialized Rockhopper Expert
| Bike/Frame Size | XS - 27.5 | S - 27.5 | M - 27.5 | S - 29 | M - 29 | L - 29 | XL - 29 | XXL - 29 |
|---|---|---|---|---|---|---|---|---|
| Wheel Size | 27.5 in | 27.5 in | 27.5 in | 29 in | 29 in | 29 in | 29 in | 29 in |
| Stack | 559 mm | 573 mm | 589 mm | 607 mm | 616 mm | 626 mm | 640 mm | 654 mm |
| Front-Center | 630 mm | 656 mm | 682 mm | 672 mm | 696 mm | 719 mm | 745 mm | 770 mm |
| Chain-Stay Length | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm | 440 mm |
| Wheelbase | 1067 mm | 1092 mm | 1118 mm | 1105 mm | 1128 mm | 1152 mm | 1178 mm | 1203 mm |
| Top-Tube Length (horizontal) | 541 mm | 565 mm | 589 mm | 586 mm | 608 mm | 630 mm | 654 mm | 679 mm |
| Bike Stand-Over Height | 658 mm | 695 mm | 735 mm | 732 mm | 754 mm | 781 mm | 820 mm | 853 mm |
| Seat-Tube Length | 310 mm | 350 mm | 400 mm | 360 mm | 400 mm | 450 mm | 500 mm | 560 mm |
| Seat-Tube Angle | 73.5° | 73.5° | 73.5° | 73.5° | 73.5° | 73.5° | 73.5° | 73.5° |
| Crank Length | 165 mm | 165 mm | 170 mm | 170 mm | 170 mm | 175 mm | 175 mm | 175 mm |
| Handlebar Width | 700 mm | 720 mm | 740 mm | 720 mm | 740 mm | 740 mm | 740 mm | 740 mm |
| Stem Length | 35 mm | 45 mm | 60 mm | 45 mm | 60 mm | 60 mm | 70 mm | 70 mm |
| Reach | 375 mm | 395 mm | 415 mm | 405 mm | 425 mm | 445 mm | 465 mm | 485 mm |
| Seat-Post Length | 300 mm | 350 mm | 400 mm | 350 mm | 400 mm | 400 mm | 400 mm | 400 mm |
| Saddle Width | 155 mm | 155 mm | 143 mm | 155 mm | 143 mm | 143 mm | 143 mm | 143 mm |
| Head-Tube Length | 95 mm | 100 mm | 105 mm | 95 mm | 95 mm | 105 mm | 120 mm | 135 mm |
| Head-Tube Angle | 68° | 68° | 68° | 68.5° | 68.5° | 68.5° | 68.5° | 68.5° |
| B-B Height | 310 mm | 310 mm | 310 mm | 310 mm | 310 mm | 310 mm | 310 mm | 310 mm |
| B-B Drop | 43 mm | 43 mm | 43 mm | 62 mm | 62 mm | 62 mm | 62 mm | 62 mm |
| Trail | 97 mm | 97 mm | 97 mm | 97 mm | 97 mm | 97 mm | 97 mm | 97 mm |
| Fork Length (full) | 475 mm | 485 mm | 495 mm | 505 mm | 515 mm | 515 mm | 515 mm | 515 mm |
| Fork Rake/Offset | 42 mm | 42 mm | 42 mm | 46 mm | 46 mm | 46 mm | 46 mm | 46 mm |
Size Guide: 2025 Specialized Rockhopper Expert
