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 Sport Mountain Bike 2021
An eminent part of the brand’s collection across the last few decades, the Specialized Rockhopper Sport Mountain Bike has been re-formatted entirely to give rise to boosted grades of ride-quality and to further the scope of its versatility across all genres of off-road riding. This has all been achieved while keeping its famed and critical price-to-performance ratio.
An A1 Premium Alloy frame with accurately butted tubing promotes a chassis that is brimming with energy, responsiveness and composure no matter the terrain ahead. A newly realised, XC inspired geometry grants a confident, spritely character before the SR Suntour fork, via it’s RX Tuned suspension, adds increased line accuracy and plushness into the performance mixture, regardless of trail severity.
Burly, double-walled, Specialized alloy rims are amalgamated with solid and dependable Formula hubs to result in a wheelset that excels whether grinding uphill or flying down technical descents. A newly conceived frame size-specific wheel sizing scheme brings optimal handling to the package by matching the wheel size to the rider and bike perfectly.
All manner of topography is conquerable thanks to the vast scope of ratios offered by the Shimano gear formation before the hydraulic disc brake platform bestows confidence via its modulated and accurate stopping power.
Complemented by a threaded bottom bracket, aesthetically pleasing internal cable routing, dropper post compatibility and convenient rack and kickstand mounts, the Rockhopper results in a most comprehensive and multifaceted companion that is set for any adventure.
Read 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 XCM suspension fork, Rx Tune configured
- Frame size-specific wheel sizing, either 27.5 or 29-inch, to optimise handling regardless of frame size
- Shimano 2 x 9-speed gear set up with service friendly, threaded bottom bracket
- Tektro HD-M275, hydraulic 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 XCM | 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 | Tektro HD-M275, hydraulic disc, 180mm |
| Rear Brake | Tektro HD-M275, hydraulic disc, 160mm |
| Front Derailleur | Shimano Altus FD-M2020 2-speed |
| Rear Derailleur | Shimano Altus, RD-M2000, 9-speed |
| Shift Levers | Shimano Altus, RapidFire Plus, 9-speed |
| Cassette | SunRace, 9-Speed, 11-36t |
| Chain | KMC X9EPT, 9-speed, anti-corrosion coating w/ reusable Missing Link™ |
| Crankset | Stout 2x, forged alloy, 22/36t |
| 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 | Specialized Ground Control Sport, 27.5x2.3" | Clincher |
| Rear Tyre | Specialized Ground Control Sport, 27.5x2.3" | Clincher |
| Saddle | Specialized Bridge Sport, steel rails, 155/143mm |
| Seatpost | Specialized Alloy, 12mm offset, 2-bolt clamp, 30.9mm |
| Pedals | Specialized Dirt |
| Manufacturer Claimed Weight | 14.25kg / 31.42lbs (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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