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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, but with a more economical oclv 500 carbon lay-up and two-piece cockpit with hidden cable routing.
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.
Trek

Trek 2025 Madone SL 5 Gen 8 Hex Blue

£2,499.00 £2,700.00 7% off
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Estimated Delivery & Collection Dates

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We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

Trek 2025 Madone SL 5 Gen 8 Hex Blue

Season:2025

Brand:Trek

Code:46218BLU

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 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 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.- the revolutionary full system foil aero tube shapes redefine what fast looks like and help optimise aerodynamics around the whole bike- a more economical 500 series oclv carbon frame and new tube shaping shave weight where it matters most to help you fly up climbs- you get clean and reliable shifting without breaking the bank with shimano'S workhorse group set â 105- lightweight, race-focused isoflow comfort tech helps you ride stronger longer without sacrificing weight or aerodynamics. Our lightest madone sl disc ever, 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.

Redefine 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 as an entire rider system was meticulously designed and rigorously tested to be faster everywhere. An 80% more vertically compliant isoflow 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. The 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. Add-on aero bottles to make your whole bike faster, the add-on rsl aero bottles and cages were designed with madone full system foil aero shapes to make the whole rider system even faster.


Technical Information
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

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).

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, 165mm length
Size:M
Shimano 105 R7100, 50/34, 170mm length
Size:ML, L
Shimano 105 R7100, 50/34, 172.5mm length
Size:XL
Shimano 105 R7100, 50/34, 175mm 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

Wheel front
Bontrager Paradigm SL, Tubeless Ready, 21 mm rim width, 100x12 mm thru axle
Hub front
Bontrager alloy, sealed bearing, CenterLock disc, 100x12 mm thru axle
Skewer front
Bontrager Switch chamfered thru axle
Hub rear
Bontrager alloy, sealed bearing, CenterLock disc, Shimano 11-speed freehub, 142x12 mm 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)

*Saddle
Size:XS, S
Bontrager Aeolus Comp, steel rails, 155 mm width
Size:M, ML, L, XL
Bontrager Aeolus Comp, steel rails, 145 mm width
*Seatpost
Size:XS, S, M, XL
Madone aero carbon seat post, 0 mm offset, short length
Size:ML, L
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
*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
Trek RCS Pro, -7-degree, 110 mm length
Brake rotor
Shimano RT70, CentreLock, 160 mm
Rotor size
Max brake rotor sizes: 180 mm front, 160 mm rear
Sizing Information
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