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 FIVE 29" Mountain Bike 2022
The Premium grade, hydroformed aluminium frame of the BMC Twostroke AL FIVE 29" Mountain Bike is light, laterally stiff and comfortable to guarantee an energising ride experience when tackling all grades of XC-themed terrain. The partnering SUNTOUR XCM 32 fork damps shock from rocks, roots and ruts, allowing the rider to increase their speed and line accuracy over technical trails. Internal cable routing through the frame promotes a sleek silhouette and clearance for up to 58mm wide tyres means that even the roughest tracks can be tackled.
An aggressive geometry puts the rider in a powerful and balanced position that is ideal for taming steep climbs and loose surfaces. The robust 29" wheels team up with high-traction Maxxis tyres to deliver control and composure at all times, while the wide-ranging, slick-shifting Shimano Deore 1 x 11-speed gears make sure the right gear is always available. Shimano hydraulic disc brakes promote confidence-inspiring stopping power, even when the trail conditions are at their worst.
Highlights
- A versatile, agile and confidence-inspiring hardtail suitable for all XC style trails
- Premium hydroformed aluminium frame with smooth welds is light and reactive
- The frame offers clearance for up to 58mm wide tyres
- Internal cable routing keeps the aesthetics clean and crisp
- Moulded covers on the chainstay, a chain suck plate and helicopter tape on the downtube protects the frame
- A SUNTOUR XCM 32 fork cushions the trails and increases control with its plush suspension
- A 67˚ head angle, long front-end and 75° seat angle helps the rider attack steep and loose terrain with perfect weight distribution
- Strong, reliable 29" wheels and wide, grippy Maxxis tyres tame any trail
- Shimano Deore 1 x 11-speed gears are accurate and give a huge range of ratios for any terrain
- Shimano hydraulic disc brakes are precise and powerful
Technical Specification
| Frame | BMC Twostroke AL Premium hydroformed aluminium, internal cable routing, BSA threaded bottom bracket, post mount disc attachment |
| Fork | SUNTOUR XCM 32, 100mm travel |
| Stem | BMC Forged 6061 Alloy |
| Handlebar | BMC Alloy, 760mm width |
| Front Brake | Shimano BR-MT200 hydraulic disc with Shimano SM-RT30 rotor (160mm on S-M sizes, 180mm on L-XL sizes) |
| Rear Brake | Shimano BR-MT200 hydraulic disc with Shimano SM-RT30 rotor (160mm on all sizes) |
| Brake Levers | Shimano BR-MT200 hydraulic |
| Rear Derailleur | Shimano Deore, 11-speed |
| Shift Levers | Shimano Deore, 11-speed |
| Chain | KMC, 11-speed |
| Cassette | Shimano Deore, 10-50T, 11-speed |
| Crankset | BMC lightweight forged alloy cranks 30T 1x specific narrow wide chainring |
| Front Wheel | Rim - XCD23 29”, tubeless-ready, Hub - Shimano MT400 |
| Rear Wheel | Rim - XCD23 29”, tubeless-ready, Hub - Shimano MT400 |
| Front Tyre | Maxxis Rekon Race 2.25", tubeless-ready |
| Rear Tyre | Maxxis Rekon Race 2.25", tubeless-ready |
| Saddle | Selle Royal Seta |
| Seatpost | BMC Alloy, 31.6mm, 0mm offset |
| 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.