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 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.
Why you'll love it
*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 | ML – 9.00 kg/19.85 lb (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, 165 mm length |
| Size: M Shimano 105 R7100, 50/34, 170 mm length |
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| Size: ML, L Shimano 105 R7100, 50/34, 172.5 mm length |
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| 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 |
**Trek Bikes reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.
Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.
| 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, CentreLock 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: XS, S, M, ML, L Verse Short, steel rails, 145 mm width |
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| Size: M, ML, L Bontrager Aeolus Comp, steel rails, 145 mm width |
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| *Seatpost | Size: XS, S, M Madone aero carbon seat post, 0 mm offset, short length |
| Size: ML, L Madone aero carbon seat post, 0 mm offset, long length |
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| *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 |
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| Size: ML, L Bontrager Comp, alloy, 31.8 mm, 80 mm reach, 121 mm drop, 40 cm control width, 44 cm drop width |
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| 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 |
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| Size: ML, L Trek RCS Pro, -7-degree, 100 mm length |
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| Brake rotor | Shimano RT70, CentreLock, 160 mm |
| Rotor size | Max brake rotor sizes: 180 mm front, 160 mm rear |
| Size | Rider Height | Inseam |
|---|---|---|
| XS |
147 - 162 cm 4'10" - 5'4" |
67 - 74 cm 26" - 29" |
| S |
162 - 166 cm 5'4" - 5'5" |
74 - 76 cm 29" - 30" |
| M |
166 - 177 cm 5'5" - 5'10" |
76 - 81 cm 30" - 32" |
| ML |
177 - 184 cm 5'10" - 6'0" |
81 - 84 cm 32" - 33" |
| L |
184 - 193 cm 6'0" - 6'4" |
84 - 88 cm 33" - 35" |
| XL |
193 - 219 cm 6'4" - 7'2" |
88 - 100 cm 35" - 39" |
