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.
BMC Twostroke AL 24" Kids Mountain Bike 2022
The BMC Twostroke AL 24" Kids Mountain Bike is an ideal choice for budding off-road riders. It features a strong aluminium frame with a tough, powder-coated finish that is more than up to the task of handling the bumps, scuffs and scrapes encountered as the young rider expands their confidence. The frame's low weight combines with a geometry that has been specifically adapted for 6 to 11-year-old riders to ensure that handling is predictable and controllable across tricky terrain.
Robust 24" wheels and high volume tyres increase the bike's predictability, comfort and grip, while the SRAM 1 x 8-speed gears give an excellent range of ratios and are easy to change thanks to their trigger lever operation. Hydraulic disc brakes work perfectly in all conditions and have smaller-reach levers to guarantee the child can take a firm grip and always stop with accuracy.
- A lightweight and confidence-inspiring MTB designed to let 6 to 11-year-olds explore with more fun and control
- The size is perfect for children who are between 120cm and 145cm tall (3’ 11” - 4’ 9”)
- An aluminium frameset is light and robust, and its powder-coated finish is highly durable
- The geometry is inspired by BMC’s adult MTBs but is adapted for smaller riders to guarantee intuitive and reliable riding
- Strong but light 24” wheels and wide, grippy Kenda tyres improve handling on off-road surfaces
- SRAM 1 x 8-speed gears are wide-ranging, accurate and easy to use thanks to their trigger-lever operation
- TEKTRO hydraulic disc brakes and short reach levers make stopping easy and controlled
- Flat handlebars increase steering predictability
|Frame||BMC Twostroke AL 24” lightweight aluminium with powder coat finish,1 1/8" head tube, BSA threaded bottom bracket, 140mm post mount, 9 x 135mm QR|
|Fork||BMC Twostroke AL 24” lightweight aluminium with powder coat finish, 140mm post mount, 9 x 100mm QR|
|Stem||BMC aluminium, 40mm length, +/- 6° angle|
|Handlebar||SDG Slater, 650mm wide, 20mm rise, 19mm bar ends, 31.8mm clamp|
|Front Brake||TEKTRO HD-M286 hydraulic disc, 140mm rotor|
|Rear Brake||TEKTRO HD-M286 hydraulic disc, 140mm rotor|
|Brake Levers||TEKTRO HD-M286 hydraulic with short reach levers|
|Rear Derailleur||SRAM X4, medium cage, 8-speed|
|Shift Levers||SRAM X4 Trigger, 8-speed|
|Cassette||SunRace, 11-34T, 8-speed|
|Crankset||BMC lightweight forged alloy cranks 32T 1x specific narrow wide chainring|
|Front Wheel||Rim - DD32 24”, tubeless-ready, Hub - BMC CNC machined alloy hub body, sealed bearings, quick-release|
|Rear Wheel||Rim - DD32 24”, tubeless-ready, Hub - BMC CNC machined alloy hub body, sealed bearings, quick-release|
|Front Tyre||Kenda Booster 24”x2.4”, tubeless-ready|
|Rear Tyre||Kenda Booster 24”x2.4”, tubeless-ready|
|Saddle||SDG Fly Jr|
|Seatpost||BMC Alloy, 27.2mm|
|Pedals||Available to be purchased separately|
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.
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.