Trek Madone SL 5 Gen 8 2026 - Road Bike
The Madone SL 5 Gen 8 brings modern aero performance into reach. A lightweight carbon frame, hidden cable routing and reliable Shimano 105 shifting deliver a fast, clean ride that suits long road miles and spirited group rides.
Key Features:
- Frame: 500 Series OCLV carbon frame, aero road geometry, IsoFlow seat tube, internal routing
- Fork: Madone Gen 8 full carbon fork with tapered carbon steerer
- Drivetrain: Shimano 105 R7100 12-speed with 50/34 chainset and 11–34t cassette
- Brakes: Shimano 105 hydraulic disc brakes
- Wheels: Bontrager Paradigm 23 alloy wheels with Bontrager R3 700x28c tyres
- Standout: Aero tube shaping and hidden cables inspired by top-tier race bikes
- Finance: Available with 0% APR finance
Madone SL 5 Gen 8 is built for riders who want the look and feel of a modern aero race bike without stepping up to flagship-level components. The 500 Series OCLV carbon frame uses Trek’s Full System Foil tube shaping to reduce drag across the whole bike, not just the frame tubes.
An IsoFlow seat tube design helps balance aerodynamic efficiency with comfort, smoothing the road without adding complexity. The two-piece cockpit keeps cables hidden for a clean front end, while alloy bars and stem help keep the overall package practical and easy to live with.
Shimano 105 12-speed delivers precise, dependable shifting with a wide gear range that suits rolling terrain, long climbs and fast flat riding. Hydraulic disc brakes provide confident control in changing conditions, making the bike well suited to year-round road use.
With stable road geometry, tubeless-ready wheels and 28mm tyres as standard, Madone SL 5 Gen 8 is ready for everything from fast solo rides to hard-paced club runs, combining everyday usability with clear aero benefits.
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, 12x100 mm chamfered thru axle |
| Stem | Trek RCS Pro, -7-degree |
| Bars | Bontrager Comp, alloy, 31.8 mm, 80 mm reach, 121 mm drop, 38 cm control width |
| Front Brake | Shimano 105 |
| Rear Brake | Shimano 105 |
| Front Mech | Shimano 105 R7100, braze-on, down swing |
| Rear Mech | Shimano 105 R7100, 36T max cog |
| Shifters | Shimano 105 R7100 |
| Speed | 24 |
| Rims | Bontrager Paradigm 23, Tubeless Ready, 24-hole, 23 mm width, Presta valve |
| Front Hub | Bontrager alloy, sealed bearing, CenterLock disc, 100x12 mm thru axle |
| Rear Hub | Bontrager alloy, sealed bearing, CenterLock disc, Shimano 11-speed freehub, 142x12 mm thru axle |
| Spokes | 14 g stainless steel, black |
| 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, short length |
| Saddle | Bontrager Aeolus Elite, austenite rails, 145 mm width |
| Chainset | Shimano 105 R7100, 50/34 |
| 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 5 Gen 8 2026 - Road Bike
Cycle to Work is a salary sacrifice scheme, where you can save up to 42% off a new Bike and Safety equipment. This means the cost is deducted from your salary as a non-cash benefit, so you save on tax and national insurance.
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