Trek

Trek Madone SL 5 Gen 8 2025

Regular price
$4,499.99
Sale price
$4,499.99
Regular price
$4,499.99
Tax included.
Color: Hex Blue
Size:

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.

It's right for you if...

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.

The tech you get

An ultra-light OCLV 500 Carbon frame with aero tubing and IsoFlow comfort technology. A 2x12 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 final word

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.

Specifications

*Please note – spec applies to all sizes unless listed separately

Frameset
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
Weight
Weight ML - 8.70 kg / 19.19 lbs (with tubes)
Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 125 kg (275 lb).
Drivetrain
Shifter Shimano 105 R7120, 12-speed
Front derailleur Shimano 105 R7100, braze-on, down swing
Rear derailleur Shimano 105 R7100, 36T max cog
*Crank Size: XS, S
Shimano 105 R7100, 50/34, 165 mm length
Size: M
Shimano 105 R7100, 50/34, 170 mm length
Size: ML, L
Shimano 105 R7100, 50/34, 172.5 mm length
Size: XL
Shimano 105 R7100, 50/34, 175 mm length
Bottom bracket Praxis, T47 threaded, internal bearing
Cassette Shimano 105 7101, 11-34, 12-speed
Chain Shimano SLX M7100, 12-speed
Max. chainring size 1x: 54T, 2x: 56/43
Wheels
Hub front Bontrager alloy, sealed bearing, CenterLock disc, 100x12 mm thru axle
Skewer front Bontrager Switch chamfered thru axle, removable lever
Hub rear Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle
Skewer rear Bontrager Switch chamfered thru axle, removable lever
Rim Bontrager Paradigm SL, Tubeless Ready, 24-hole, 21 mm width, Presta valve
Spokes 14 g stainless steel, black
Tyre Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x28 mm
Max tyre size 32 mm (as measured, see manual for details)
Components
*Saddle Size: XS, S
Bontrager Aeolus Comp, steel rails, 155 mm width
Size: XS, S, M, ML, L, XL
Verse Short, steel rails, 145 mm width
Size: M, ML, L, XL
Bontrager Aeolus Comp, steel rails, 145 mm width
*Seatpost Size: XS, S, M
Madone aero carbon seat post, 0 mm offset, short length
Size: ML, L, XL
Madone aero carbon seat post, 0 mm offset, long length
*Handlebar Size: XS
Bontrager Comp, alloy, 31.8 mm, 80 mm reach, 121 mm drop, 36 cm control width, 40 cm drop width
Size: S, M
Bontrager Comp, alloy, 31.8 mm, 80 mm reach, 121 mm drop, 38 cm control width, 42 cm drop width
Size: ML, L
Bontrager Comp, alloy, 31.8 mm, 80 mm reach, 121 mm drop, 40 cm control width, 44 cm drop width
Size: XL
Bontrager Comp, alloy, 31.8 mm, 80 mm reach, 121 mm drop, 42 cm control width, 46 cm drop width
Handlebar tape Trek EcoTack, black
*Stem Size: XS
Trek RCS Pro, -7-degree, 80 mm length
Size: S, M
Trek RCS Pro, -7-degree, 90 mm length
Size: ML, L
Trek RCS Pro, -7-degree, 100 mm length
Size: XL
Brake rotor Shimano RT70, CentreLock, 160 mm
Rotor size Max brake rotor sizes: 180 mm front, 160 mm rear

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