Trek Madone SL 5 Gen 8 Shimano 105 Road Bike 2026
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The Madone SL 5 Gen 8 is a lightweight aero road bike that brings elite racing tech to a lower price point. It offers similar aero benefits to the pricier Madone SLR Gen 8 models, but with a more economical OCLV 500 Carbon lay-up and two-piece cockpit with hidden cable routing. A Shimano 105 group set, alloy handlebars and alloy wheels keeps the price down while still delivering clean mechanical shifting you can trust.
FEATURES
Our lightest Madone SL Disc ever
New light and fast aero tube shaping paired with light-yet-economical 500 Series OCLV Carbon makes Gen 8 our lightest Madone SL Disc f/s ever and the ideal climbing bike.
Redefines what fast looks like
Revolutionary new Full System Foil aero tube shapes improve airflow over the whole bike while maintaining the lightness that climbers crave. Plus, the bike's entire rider system was meticulously designed and rigorously tested to be faster everywhere.
80% more vertically compliant IsoFlow
We refined our race-focused comfort tech to be lighter and have nearly double the vertical compliance so you can ride stronger for longer.
Rooted in racing
The Madone SL was informed by feedback from Lidl-Trek's fastest sprinters and climbers.
Adjustable aero cockpit
The Madone Gen 8 features hoods that are narrower than the drops so you can adjust your positioning to prioritise aerodynamics or power. Plus, the two-piece design lets you quickly and easily dial in your fit.
SIZE GUIDE
S Frame 50cm 158-162cm Height
M Frame 52-54cm 162-173cm Height
ML Frame 56cm 173-179cm Height
L Frame 58cm 179-188cm Height
XL Frame 60-62cm 188-213cm Height
SPECIFICATIONS
Frame: 500 Series OCLV Carbon (size ML), Full System Foil tube shaping, IsoFlow seat tube, RCS Headset System, electronic or mechanical routing, removable aero chainkeeper, T47 bottom bracket, flat-mount disc, UDH, 142 × 12 mm thru axle
Fork: Madone Gen 8 full carbon fork, tapered carbon steerer, internal brake routing, flat-mount disc, 12 × 100 mm chamfered thru axle
Wheel Size: 700c front / 700c rear
Wheels: Bontrager Paradigm 23, Tubeless Ready, 24-hole, 23 mm internal width, Presta valve, Bontrager alloy sealed bearing hubs, CenterLock disc, 100 × 12 mm front thru axle, Shimano 11-speed freehub, 142 × 12 mm rear thru axle
Tyres: Bontrager R3 Hard-Case Lite, Tubeless Ready, aramid bead, 170 TPI, 700 × 28 mm
Shifter: Shimano 105 R7120, 12-speed
Front Derailleur: Shimano 105 R7100, braze-on, down swing
Rear Derailleur: Shimano 105 R7100, maximum 36T cog
Crank: Shimano 105 R7100, 50/34T chainrings, 170 mm length
Bottom Bracket: Praxis, T47 threaded, internal bearing
Cassette: Shimano 105 CS-7101, 11–34T, 12-speed
Chain: Shimano SLX M7100, 12-speed
Front Brake: Shimano hydraulic disc with CenterLock rotor, 160 mm
Rear Brake: Shimano hydraulic disc with CenterLock rotor, 160 mm
Handlebar: Bontrager Comp, alloy, 31.8 mm clamp, 80 mm reach, 121 mm drop, 40 cm control width, 44 cm drop width
Stem: Trek RCS Pro, -7° angle, 100 mm length
Seatpost: Madone aero carbon seatpost, 0 mm offset, short length
Saddle: Bontrager Aeolus Elite, austenitic steel rails, 145 mm width
Weight: 8.64 kg
