The Trek 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.
Sunset Cycles offers the 2025 Trek Madone SL 5 Gen 8 aero road bike in Matte Deep Smoke finish with free delivery.
The 2025 Trek MADONE SL range: Madone SL 5 Gen 8 (Blue) | Madone SL 5 Gen 8 (Smoke) | Madone SL 6 Gen 8 (Black) | Madone SL 6 Gen 8 (Crimson) | Madone SL 6 Gen 8 (White) | Madone SL 6 AXS Gen 8 (Black)
| Frame & Fork | |
| 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 |
| Wheels & Tyres | |
| Wheel front | Bontrager Paradigm SL, Tubeless Ready, 21 mm rim width, 100x12 mm thru axle |
| Wheel rear | Bontrager Paradigm SL, Tubeless Ready, 21 mm rim width, 142x12 mm thru axle |
| Hub front | Bontrager alloy, sealed bearing, CenterLock disc, 100x12 mm thru axle |
| Hub rear | Bontrager alloy, sealed bearing, CenterLock disc, Shimano 11-speed freehub, 142x12 mm thru axle |
| Tyre | Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x28 mm |
| Spokes | 14 g stainless steel, black |
| 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 |
| Components | |
| 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 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 |
| 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 |
| 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). |
| Frame Size | Rider Height* (metric) | Rider Height* (imperial) |
| X Small | 143 - 158 cm | 4'8" - 5'2" |
| Small | 158 - 162 cm | 5'2" - 5'4" |
| Medium | 162 - 173 cm | 5'4" - 5'8" |
| Medium/Large | 173 - 179 cm | 5'8" - 5'10" |
| Large | 179 - 188 cm | 5'10" - 6'2" |
| X Large | 188 - 213 cm | 6'2" - 7'0" |
| *This is for guidance only. You may be taller or shorter, it doesn't mean our bikes will not fit you. The best way to determine the correct bike size for you is to try one. Please contact us if you are in any doubt about the correct bike size for you. | ||