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.
Save up to 47% with any one of our 11 Cycle to Work partners, and get the health benefits of a new bike in exchange for tax free salary sacrifice. To find out more about our various partners and how to apply click here.
Choose between Free Bike Delivery - to your home or place of work - or our new Premier Bike Delivery Service £99.99 and have your bike delivered "ready to ride" and set up to your measurements with seatpost and pedals adjusted on arrival by a qualified bike mechanic. Either way, our Customer Care team will be in touch to arrange a delivery date to suit you.
We've partnered with Laka to offer you 30 days free bike Insurance on your new bike purchase over £400. Click here for more info and find out how to 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.
Learn more about the Specialized Rockhopper 2021 mountain bike range.
Highlights
- 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
Technical Specification
| 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 |
| Chainrings | 22/36 Tooth |
| 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 |
| Pedals | Specialized Dirt |
| 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 included), 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. For hassle-free home delivery and bike set-up from a qualified mechanic use our Premier Delivery Service.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.
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