Trek Madone SL 5 Gen 8 Road Bike 2025 in Hex Blue

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, but with a more economical OCLV 500 Carbon lay-up and two-piece cockpit with hidden cable routing. It’s built to race, with geometry that keeps you quick on the sprints yet in control on fast descents. A Shimano 105 group set keeps the price down while still delivering clean mechanical shifting you can trust.

You want a featherweight road race bike without top-end race pricing. You’re up for racing, club rides or solo spins up winding canyons, and don’t want to compromise between climbing efficiency and aerodynamics. You’re happy with more economical components that help you get on your dream bike faster.

An ultra-light OCLV 500 Carbon frame with aero tubing and IsoFlow comfort technology. A 2×12 Shimano 105 group set that delivers clean mechanical shifts without the faff of electronic group sets. Tubeless wheels that help fight punctures while reducing rolling resistance, and hydraulic disc brakes.

The Madone SL 5 Gen 8 is the perfect bike for someone looking for superbike performance at a lower price point. It offers the same frame tech as its SLR sibling, like aero tube shaping and lightweight IsoFlow comfort tech, but with a more economical build that leaves budget to spare for race entry fees and bike trips.

Key Features & Benefits:

• 500 Series OCLV Carbon Frame:Race-worthy aerodynamics and climb crushing weight.
• Revolutionary Full System Foil Aero Tube Shapes:Redefine what fast looks like and help optimise aerodynamics around the whole bike.
• Shimano 105:Clean and reliable shifting without breaking the bank with Shimano’s workhorse group set.

Full Specification:

• 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, 142×12 mm thru axle
• Fork:Madone Gen 8 full carbon, tapered carbon steerer, internal brake routing, flat mount disc, 12x100mm chamfered thru axle
• Number of Gears:24
• Gear Shifters:Shimano 105 R7120, 12-speed
• Chainset:Shimano 105 R7100, 50/34, XS/S:165mm, M:170mm, ML/L:172.5mm, XL: 175mm
• Chainrings:50/34T
• Rear Cassette:Shimano 105 7101, 11-34, 12-speed
• Chain:Shimano SLX M7100, 12-speed
• Front Derailleur:Shimano 105 R7100, braze-on, down swing
• Rear Derailleur:Shimano 105 R7100, 36T max cog
• Bottom Bracket:Praxis, T47 threaded, internal bearing
• Pedals:Not supplied:Shop pedals here
• Front Wheel:Bontrager Paradigm SL, Tubeless Ready, 21 mm rim width, 100×12 mm thru axle
• Rear Wheel:Bontrager Paradigm SL, Tubeless Ready, 21 mm rim width, 142×12 mm thru axle
• Front Tyre:Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700×28 mm
• Rear Tyre:Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700×28 mm
• Brakes:Shimano 105 12-speed, Shimano RT70 rotors, CentreLock, 160 mm
• Handlebars:Bontrager Comp, alloy, 31.8 mm, 80 mm reach, 121 mm drop, XS:36-40cm, S/M:38-42cm, ML/L:40cm-44cm, XL: 42-46cm (control width – drop width)
• Handlebar Grips:Bontrager Supertack Perf tape
• Stem:Trek RCS Pro, -7-degree, XS/S:80cm, M:90cm, ML/L:100cm, XL:110cm
• Saddle:Bontrager Aeolus Comp, steel rails, XS/S:155mm width, M/ML/L/XL:145mm width
• Seatpost:Madone aero carbon seat post, 0 mm offset, XS/S/M:Short length, ML/L/XL:Long length
• Weight:ML – 8.70 kg / 19.19 lbs (with tubes)