Trek Madone SL 5 Gen 8

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 layup and two-piece cockpit with hidden cable routing. A Shimano 105 groupset, alloy handlebars, and alloy wheels keep the price down while still delivering clean mechanical shifting you can trust.

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 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 longer.

Rooted in racing

Madone SL was informed by feedback from Lidl-Trek's fastest sprinters and climbers.

Adjustable aero cockpit

Madone Gen 8 features hoods that are narrower than the drops so you can adjust your positioning to prioritize 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

Add-on RSL Aero Bottles and Cages were designed with Madone Full System Foil aero shapes to make the whole rider system even faster.

Frame	500 Series OCLV Carbon, Full System Foil tube shaping, IsoFlow seat tube, RCS Headset System, electronic or mechanical routing, removable aero chainkeeper, T47 BB, flat mount disc, UDH, 142x12mm thru axle
Fork	Madone Gen 8 full carbon, tapered carbon steerer, internal brake routing, flat mount disc, 12x100mm chamfered thru axle
Tire	Bontrager Aeolus Pro, Tubeless Ready, aramid bead, 120tpi, 700x28mm
Tire Part	Bontrager TLR sealant, 6oz
Hub Front	Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle
Hub Rear	Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle
Rim	Bontrager Paradigm 23, Tubeless Ready, 24-hole, 23mm width, Presta valve
Skewer Front	Bontrager Switch chamfered thru axle
Skewer Rear	Bontrager Switch chamfered thru axle, removable lever
Shifter	Shimano 105 R7120, 12 speed // Shimano 105 R7120, 12 speed
Front Derailleur	Shimano 105 R7100, braze-on, down swing
Rear Derailleur	Shimano 105 R7100, 36T max cog
Crank	Shimano 105 R7100, 50/34, 165mm length
Bottom Bracket	Praxis, T47 threaded, internal bearing
Cassette	Shimano 105 7101, 11-34, 12 speed
Chain	Shimano SLX M7100, 12 speed
Brake	Shimano 105 hydraulic disc, flat mount
Brake Rotor	Shimano CL700, centerlock, 160mm
Saddle	Bontrager Aeolus Elite, austenite rails, 145mm width, 50th anniversary edition
Seatpost	Madone aero carbon seatpost, 0mm offset, short length
Handlebar	Bontrager Comp, alloy, 31.8mm, 80mm reach, 121mm drop, 36cm control width, 40cm drop width
Stem	Trek RCS Pro, -7 degree, 80mm length

Geometry Chart

B B Drop	7.2
Chainstay Length	41
Eff Top Tube	51.7
Frame Reach	37
Frame Size Letter	XS
Frame Stack	50.7
Head Angle	71.6°
Head Tube Length	10
Offset	5
Saddle Rail Height Max Short	61.2
Saddle Rail Height Max Tall	65.4
Saddle Rail Height Min Short	54.9
Saddle Rail Height Min Tall	59.2
Seat Tube	40.4
Seat Tube Angle	73.8°
Standover	70.4
Trail	6.1
Wheelbase	97.1
Wheel Size	700c