Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
All our bikes are fully built by our Cytech qualified mechanics. To find out more, see the Built, Checked, Tuned and Tested section below to see how we'll deliver your bike.
We offer FREE DELIVERY of your bike to your home or place of work. Once you've placed your order, our Customer Care team will be in contact to offer a convenient delivery date of your choice.
We've partnered with PedalSure to offer you 30-DAYS FREE bike insurance on new bikes over £400. Visit our Cycle Insurance page to learn more and claim.
Specialized Rockhopper Mountain Bike 2021
A distinguished member of the brand's family the Specialized Rockhopper Mountain Bike has been refreshed to result in even more versatility and a greatly heightened level of performance. By re-imagining the essential aspects, any rider of any ability can now conquer an even bigger spectrum of terrain without breaking the bank to do so.
The newly conceived A1 Premium Alloy frame features carefully butted tubing to result in a lighter weight, increased durability and a reactive riding spirit. Utilising a refreshing cross country influenced geometry, a planted and confident experience is punctuated by sprightliness and responsiveness. The SR Suntour fork, with its RX tuned suspension, partners by bestowing its plush cushioning to impart increased trail accuracy and comfort.
Double-walled and realised in Specialized's own alloy the resilient rims are coupled with smooth and well-sealed Formula hubs to give rise to a dependable, low maintenance wheelset that's game for any off-road task. A smart concept, matching the correct wheel size, either 27.5 or 29-inch, to the size of the frame, ensures that any rider receives optimal levels of poise and control with which to attack the trails.
A Shimano and microShift gear combination facilitate smooth passage across any topography thanks to its broad range of ratios before a disc brake set up provides all of the stopping power required in the most technical of riding situations.
An already thorough specification is completed with aesthetically pleasing cable routing, a threaded bottom bracket for easy maintenance, dropper post compatibility and rack and kickstand mounts.
- Re-designed from the ground up the venerable Rockhopper is now lighter, better handling, more service friendly and more versatile
- All-new frame design with A1 Alloy and butted tubing
- Cross country inspired geometry
- SR Suntour XCE suspension fork, Rx Tune configured
- Frame size-specific wheel sizing, either 27.5 or 29-inch, to optimise handling regardless of frame size
- Shimano and microSHIFT combined 2 x 8-speed gear set up with service friendly, threaded bottom bracket
- Radius CX7, mechanical disc brake configuration
Read more about the Specialized Rockhopper 2021 mountain bike range here.
|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|
|Fork||SR Suntour XCE | 30mm Stanchions | Rx Tune | coil spring | QR | 80/90/100mm travel (size-specific) | 42mm offset|
|Stem||Stout 3D-forged alloy, 31.8mm, 6-degree rise|
|Handlebars||Stout Mini Rise, alloy, 9-degree backsweep, 15mm rise, 31.8mm|
|Grips||Specialized Trail Grips, lock-on|
|Front Brake||Radius CX7, mechanical disc, 160mm|
|Rear Brake||Radius CX7, mechanical disc, 160mm|
|Front Derailleur||Shimano Altus FD-M315|
|Rear Derailleur||Shimano Tourney RD-TX800, 8-speed|
|Shift Levers||microSHIFT, TS39-8R, 8-speed|
|Cassette||SunRace, 8-speed, 11-34t|
|Chain||KMC X8 EPT, anti-rust coating, 8-speed w/ reusable Missing Link™|
|Crankset||Stout 2x, forged alloy|
|Bottom Bracket||Square-tapered, 73mm, internal bearings, 122.5mm spindle|
|Front Wheel||Specialized alloy, disc only rims, double-wall, 25mm inner width, 32h | Formula 6-Bolt hub, disc, 100x9mm spacing, quick-release, 32H | Stainless, 14g spokes|
|Rear Wheel||Specialized alloy, disc only rims, double-wall, 25mm inner width, 32h | Formula 6-Bolt hub, disc, 135x9mm spacing, quick-release, 32H | Stainless, 14g spokes|
|Front Tyre||Ground Control Sport, 27.5x2.3" | Clincher|
|Rear Tyre||Ground Control Sport, 27.5x2.3" | Clincher|
|Saddle||Bridge Sport, steel rails, 155/143mm|
|Seatpost||Alloy, 12mm offset, 2-bolt clamp, 30.9mm|
|Manufacturer Claimed Weight||14.5kg / 31.97lbs (size M, 29")|
Built, Checked, Tuned and Tested
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if specified), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. We do not install accessories to bikes, including mudguards.
Specialized Rockhopper Mountain Bike 2021 Sizing
Forgotten Your Password?
Please enter your registered email address below and we'll send you an email explaining the next step.
Select a store
Select the store you visit most frequently below and their stock information will show on product pages.