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.
Cyclescheme can save you up to 39% on a bike and accessories. Visit our Cycle to Work Scheme page to learn more and claim.
Product Highlights
Lightweight and stiff, OCLV 500 carbon soaks up road vibrations and provides a comfortable ride.
The balanced H1.5 fit allows the rider to realise more power, lower drag and increased comfort.
The Madone's Kaamtail frame tube shapes make it one of the world's most aerodynamic road frames.
This top tube design uses an adjustable dampener to improve compliance at the rear of the bike.
Trek Madone SL 6 Disc Road Bike 2021
Comfortable, versatile, and most importantly fast, the Trek Madone SL 6 Disc Road Bike is a top choice for serious riders and racers. It's crammed with advanced technology, and constructed from a lightweight 500 Series OCLV Carbon frame and fork, creating lateral stiffness for incredibly sharp handling. Both use wind tunnel-tested KVF (Kammtail Virtual Foil) tubing that slices through the wind for a significant aero advantage.
Top tube IsoSpeed is responsible for the comfort of this bike. It's adjustable so you can fine-tune the compliance, while an elastomer damper ensures rebound is smooth and controlled.
The drivetrain is made up of 11-speed Shimano Ultegra, with disc brakes for powerful, reliable stopping, and a compact chainset is paired to an 11-30-tooth cassette bringing a wide range of gears. The stem, handlebar, cranks and seatpost are frame size-specific to optimise fit for every rider. If triathlons or time trials are your thing, you can clip on extensions for a more aerodynamic position.
The bike rolls on tubeless-ready Bontrager Aeolus Comp Disc wheels with a 50mm deep, aerodynamic profile. Bontrager R3 Hard-Case Lite tyres in a 25mm width are fast and smooth-rolling, but tyres up to 28mm can be fitted for further improved comfort.
Technical Specification
| Frame | Trek 500 Series OCLV Carbon, KVF (Kammtail Virtual Foil) tube shape, adjustable top tube IsoSpeed, invisible cable routing, 3S aero chain keeper, flat-mount disc, DuoTrap S-compatible, 142x12mm thru-axle |
| Fork | Trek Madone KVF full carbon, tapered carbon steerer, invisible cable routing, flat-mount disc, carbon dropouts, 12x100mm thru-axle |
| Stem | Bontrager Pro, 31.8mm, Blendr-compatible, 7-degree, length - 80mm (50) / 90mm (52/54) / 100mm (56/58) / 110mm (60/62) |
| Handlebar | Bontrager Elite Aero VR-CF, alloy, 31.8mm, invisible cable routing, 93mm reach, 123mm drop, width - 40cm (50/52) / 42cm (54/56) / 44cm (58/60/62) |
| Bar Tape | Bontrager Supertack Perf tape |
| Front Brake | Shimano Ultegra hydraulic disc, Shimano RT800 rotor, Center Lock, 160mm |
| Rear Brake | Shimano Ultegra hydraulic disc, Shimano RT800 rotor, Center Lock, 160mm |
| Brake Levers | Shimano Ultegra R8020 |
| Front Derailleur | Shimano Ultegra R8000, braze-on |
| Rear Derailleur | Shimano Ultegra R8000, short cage, 30T max cog |
| Shift Levers | Shimano Ultegra R8020, 11-speed |
| Chain | Shimano Ultegra HG701, 11-speed |
| Cassette | Shimano Ultegra R8000, 11-30t, 11-speed |
| Crankset | Shimano Ultegra R8000, 50/34 (compact), length - 170mm (50/52) / 172.5mm (54/56) / 175mm (58/60/62) |
| Front Wheel | Bontrager Aeolus Comp Disc, tubeless-ready, 18mm rim width, 100x12mm thru-axle / skewer - Bontrager Switch thru-axle, removable lever |
| Rear Wheel | Bontrager Aeolus Comp Disc, tubeless-ready, 18mm rim width, 142x12mm thru-axle / skewer - Bontrager Switch thru-axle, removable lever |
| Front Tyre | Bontrager R3 Hard-Case Lite, aramid bead, 120tpi, 700x25c tubeless-ready |
| Rear Tyre | Bontrager R3 Hard-Case Lite, aramid bead, 120tpi, 700x25c tubeless-ready |
| Saddle | Bontrager Aeolus Comp, steel rails, 145mm width |
| Seatpost | Trek Madone aero carbon internal seat mast cap, integrated light mount, 25mm offset, short length (50/52/54/56), tall length (58/60/62) |
| Pedals | Available to be purchased separately |
| Manufacturer Claimed Weight | 8.62kg / 19.00lbs (56) |
| Weight Limit | This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 125kg (275lbs) |
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 or contact Customer Care. We do not install accessories to bikes, including mudguards.