Trek Madone SL 6 Gen 8 2025 - Road Bike
Built with Trek’s 500 series aerodynamic carbon frame and equipped with Shimano 105 Di2, the Madone SL 6 Gen 8 delivers electronic shifting, IsoFlow comfort and tubeless carbon wheels, ready for fast-paced rides and challenging climbs.
Key Features:
- 500 Series OCLV Carbon frame with aero shaping and IsoFlow comfort tech
- Madone Gen 8 full carbon fork with tapered steerer and internal routing
- Shimano 105 Di2 2x12-speed drivetrain with trickle-down shifting tech
- Shimano hydraulic disc brakes with 180/160mm RT70 rotors
- Bontrager Aeolus Elite 35 carbon wheels with R3 700x28mm tyres
- Tubeless-ready setup for lower rolling resistance and fewer punctures
- Available with 0% APR finance
The Trek Madone SL 6 Gen 8 proves that race-ready technology doesn’t have to come at a premium. It shares the same aero-focused frame design as Trek’s models, using 500 Series OCLV Carbon and the latest Full System Foil tube shaping to improve airflow across the entire bike and rider system. This means better speed without compromising the balance and ride feel.
Where the Madone SL 6 really stands out is in its IsoFlow seat tube design—a unique feature that increases compliance by flexing under the saddle, absorbing road vibrations and keeping you fresher on long rides. It’s Trek’s way of blending race geometry with everyday comfort, ideal whether you're sprinting for the line or pacing a solo effort.
The standout component is the Shimano 105 Di2 12-speed groupset, offering wireless electronic shifting with smooth, lightning-fast gear changes. Thanks to Shimano’s trickle-down technology, you get the same shifting feel and performance found in their top-end systems, now in a more accessible package.
Shimano hydraulic disc brakes with RT70 rotors (180mm front, 160mm rear) ensure confident braking no matter the weather, while Bontrager Aeolus Elite 35 carbon wheels deliver climbing efficiency, fast acceleration and stability at speed. These come set up tubeless with Bontrager R3 Hard-Case Lite 700x28mm tyres, reducing rolling resistance and offering greater puncture protection.
The bike is finished with a mix of lightweight and race-optimised finishing kit, including a Trek RCS Pro stem, Bontrager Comp alloy bars, and a Madone aero carbon seat post. It’s a build that puts performance first while keeping value in mind.
Whether you’re racing at the weekend or stepping up your everyday road riding, the Madone SL 6 Gen 8 brings cutting-edge frame tech, wireless shifting and aero efficiency together in a superbike-style package without the superbike price tag.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | 500 Series OCLV Carbon, Full System Foil tube shaping, IsoFlow seat tube, RCS Headset System, electronic or mechanical routing, removable aero chain keeper, T47 BB, flat mount disc, UDH, 142x12 mm thru axle |
| Fork | Madone Gen 8 full carbon, tapered carbon steerer, internal brake routing, flat mount disc, 12x100mm chamfered thru axle |
| Headset | RCS Headset System |
| Stem | Trek RCS Pro, -7-degree, 100 mm length |
| Bars | Bontrager Comp, alloy, 31.8 mm, 80 mm reach, 121 mm drop, 40 cm control width, 44 cm drop width |
| Front Brake | Shimano RT70, CentreLock, 180 mm |
| Rear Brake | Shimano RT70, CentreLock, 160 mm |
| Front Mech | Shimano 105 R7150 Di2, braze-on, down swing |
| Rear Mech | Shimano 105 R7150 Di2, 36T max cog |
| Shifters | Shimano 105 R7170, 12-speed |
| Speed | 24 |
| Rims | Bontrager Aeolus Elite 35 |
| Front Hub | Bontrager Aeolus Elite 35 |
| Rear Hub | Bontrager Aeolus Elite 35 |
| Front Tyre | Bontrager R3 Hard-Case Lite, Tubeless Ready, aramid bead, 170 tpi, 700x28 mm |
| Rear Tyre | Bontrager R3 Hard-Case Lite, Tubeless Ready, aramid bead, 170 tpi, 700x28 mm |
| Seat Post | Madone aero carbon seat post, 0 mm offset, long length |
| Saddle | Bontrager Aeolus Comp, steel rails, 145 mm width |
| Chainset | Shimano 105 R7100, 50/34, 172.5 mm length |
| Bottom Bracket | Praxis, T47 threaded, internal bearing |
| Chain | Shimano SLX M7100, 12-speed |
| Cassette | Shimano 105 7101, 11-34, 12-speed |
Trek Madone Gen 8 Size Chart
| Size | Height cm | Height Feet / Inches | Inseam cm | Inseam Inches |
|---|---|---|---|---|
| XS (47cm) | 143 - 158 cm | 4'8" - 5'2" | 67 - 74 cm | 26" - 29" |
| S (50cm) | 158 - 162 cm | 5'2" - 5'4" | 74 - 76 cm | 29" - 30" |
| M (52-54cm) | 162 - 173 cm | 5'4" - 5'8" | 76 - 81 cm | 30" - 32" |
| ML (56cm) | 173 - 179 cm | 5'8" - 5'10" | 81 - 84 cm | 32" - 33" |
| L (58cm) | 179 - 188 cm | 5'10" - 6'2" | 84 - 88 cm | 33" - 35" |
| XL (60-62cm) | 188 - 213 cm | 6'2" - 7'0" | 88 - 100 cm | 35" - 39" |
What size frame do I need if I am between sizes? - read here
Trek Madone Gen 8 Geometry Chart
| Size | XS | S | M | ML | L | XL |
|---|---|---|---|---|---|---|
| Stack | 507 | 530 | 546 | 562 | 582 | 610 |
| Reach | 370 | 378 | 384 | 389 | 394 | 402 |
| Head Tube Length | 100 | 121 | 136 | 150 | 172 | 201 |
| Head Tube Angle | 71.6° | 72.2° | 72.9° | 73.5° | 73.8° | 73.9° |
| Bottom Bracket Drop | 72 | 72 | 70 | 70 | 68 | 68 |
| Trail | 61 | 62 | 58 | 59 | 57 | 57 |
| Fork Rake/Offset | 50 | 45 | 45 | 40 | 40 | 40 |
| Chainstay Length | 410 | 410 | 410 | 410 | 411 | 412 |
| Wheelbase | 971 | 976 | 981 | 980 | 990 | 1007 |
| Top Tube Length (horizontal) | 517 | 532 | 545 | 557 | 568 | 584 |
| Standover Height | 704 | 734 | 762 | 790 | 820 | 863 |
| Seat Tube Length | 404 | 440 | 476 | 512 | 548 | 609 |
| Seat Tube Angle | 73.8° | 73.8° | 73.6° | 73.4° | 73.4° | 73.4° |
| Saddle rail height min (w/short mast) | 549 | 585 | 621 | 657 | 693 | 754 |
| Saddle rail height max (w/short mast) | 612 | 648 | 684 | 720 | 756 | 817 |
| Saddle rail height min (w/tall mast) | 592 | 628 | 664 | 700 | 736 | 797 |
| Saddle rail height max (w/tall mast) | 654 | 690 | 726 | 762 | 798 | 859 |
All measurements are in mm unless otherwise stated.
The above table shows the standard geometry for the bicycle as shipped, other geometry configurations may be available with certain bikes. Please contact us via Live Chat to find out more.
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Trek Madone SL 6 Gen 8 2025 - Road Bike
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