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 Hotrock 20 Kids Bike
The gift of the open road and even the temptation of the trail, the Specialized Hotrock 20 Kids Bike is the perfect choice for the young rider eager to keep pace with their elders. A quality, tough and robust construction assuring a hugely durable setup, this bike is more than ready to put up with the punishment that your little terror could ever hope to put it through.
Made from an A1 premium aluminium frame to assure you of a high quality, robust centre to your bike, this is a solid machine that's sure to give your child their first taste of proper unsupported riding. With an SR Suntour XCT-JR front fork offering 50mm of travel, this is a quality option for covering rougher terrain, turning off the metered paths and onto some rougher stuff. Providing great versatility and smooth riding comfort, this is a top option for pushing ahead on two wheels and getting to grips with a life by bike.
Making use of a 7-speed cassette and shifting by means of a Shimano Tourney rear derailleur and grip shift, this bike provides smooth changes and a comfortable ride. With a Specialized Kids Henge saddle providing the soft comfort, this bike is sure to provide a great experience and help get your child hooked on riding.
Ensure that your child gets the most out of riding their bike by choosing the appropriate size. A bike that is bought to grow into will be uncomfortable, awkward, difficult to handle and potentially dangerous if the child is not confident in being able to control speed. Always check size guides and age range suggestions so that the bike is ready to go, straight out the box.
FEATURES:
- Tough, light, and durable, the A1 Premium Aluminium frame is built to stand up to years of tough riding.
- SR Suntour suspension fork offers 40mm of coil-sprung travel that smooths out bumpy, rough terrain.
- The 7-speed Shimano Tourney shifts smoothly and is tough enough for abuse.
Sizing
The 20" wheels and geometry of the Hotrock 20 kids bike are suitable for children aged 5-9 years or 42-47" / 105-120cm tall
Technical Specification
| FRAME | Specialized A1 Premium Aluminum, single-butted, unisex frame, replaceable derailleur hanger |
| FORK | SR Suntour XCT-JR, coil spring with preload adjust, 40mm of travel, 1-1/8" steerer, quick-release, V-brake and post mount disc compatible |
| STEM | 20-degree rise, 25.4mm |
| HANDLEBAR | 580mm, aluminium, 5-degree backsweep, 25.4mm |
| TAPE | Specialized, slip-on |
| FRONT BRAKE | V-brake with tool-less reach adjust brake lever |
| REAR BRAKE | V-brake with tool-less reach adjust brake lever |
| REAR DERAILLEUR | Shimano Tourney TX, 7-speed |
| SHIFT LEVERS | Shimano Tourney, grip shift, 7-speed |
| CASSETTE | SunRace, 7-Speed, 11-34t |
| CHAIN | KMC HV500 |
| CHAINSET | Forged alloy, square taper, 127mm w/ chainguard, 30t |
| PEDALS | Nylon platform w/ reflectors |
| BOTTOM BRACKET | BSA, square taper, E-type |
| FRONT WHEEL | 20" single wall aluminium 32h, alloy loose ball bearing hub |
| REAR WHEEL | 20" single wall aluminium 32h, alloy loose ball bearing hub, 7-speed freehub |
| FRONT TYRE | Specialized Renegade, 20x2.1 inch, 26 TPI, wire bead |
| REAR TYRE | Specialized Renegade, 20x2.1 inch, 26 TPI, wire bead |
| SADDLE | Specialized Kids' Henge |
| SEAT CLAMP | Bolt-type, 31.8mm |
| PEDALS | Nylon Platform with reflectors |
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.
Unable to display Reviews due to Privacy Settings.
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
Unable to display Q&A due to Privacy Settings.
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".