Trek Madone SL 5 Gen 8 (2025)
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Madone SL 5 Gen 8 is a lightweight aerodynamic road bike that makes elite technologies accessible. It offers aerodynamic advantages similar to the more expensive Madone SLR Gen 8 but with a more affordable OCLV 500 carbon layup and a two-piece cockpit with invisible cable routing. Itβs designed for racing with geometry that favors sprint speed but allows control on fast descents. A Shimano 105 groupset is extremely affordable, offering a clean and reliable mechanical solution.
Specifications
*Note: specifications apply to all sizes unless listed separately
| Frame | OCLV 500 Series carbon, Full System Foil tube profiles, IsoFlow seat tube, RCS headset, electronic or mechanical shifting cable routing, removable aero chain catcher, T47 bottom bracket, flat mount disc brakes, UDH, 142x12mm thru axle |
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| Fork | Madone Gen 8 full carbon, tapered carbon steerer, internal brake routing, flat mount disc, 12x100mm chamfered thru axle |
| Weight | ML - 8.70 kg / 19.19 lbs (With inner tubes) |
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| Weight limit | This model has a maximum overall limit (combined weight of bike, rider, and load) of 125kg. |
| Shifter | Shimano 105 R7120, 12-speed |
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| Front derailleur | Shimano 105 R7100, braze-on, low clamp |
| Rear derailleur | Shimano 105 R7100, max 36-tooth sprocket |
| *Crankset |
Size:Β XS, S Shimano 105 R7100, 50/34, 165mm length |
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Size:Β M Shimano 105 R7100, 50/34, 170mm length |
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Size:Β ML, L Shimano 105 R7100, 50/34, 172.5mm length |
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Size:Β XL Shimano 105 R7100, 50/34, 175mm 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 |
| Front wheel | Bontrager Paradigm SL, Tubeless Ready, 21mm rim width, 100x12mm thru axle |
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| Rear wheel | Bontrager Paradigm SL, Tubeless Ready, 21mm rim width, 142x12mm thru axle |
| Front hub | Bontrager alloy, sealed bearing, Centerlock disc, 100x12mm thru axle |
| Front lock | Bontrager Switchbladed thru axle, removable lever |
| Rear hub | Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle |
| Rear lock | Bontrager Switchbladed thru axle, removable lever |
| Rim | Bontrager Paradigm SL, Tubeless Ready, 24 holes, width 21mm, Presta valve |
| Spokes | 14g stainless steel, black |
| Tire | Bontrager R1 Hard-Case Lite, stiff bead, 60tpi, 700x28mm |
| Max tire size | 32mm (measured, see manual for details) |
| *Saddle |
Size:Β XS, S Bontrager Aeolus Comp, steel rails, width 155mm |
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Size:Β M, ML, L, XL Bontrager Aeolus Comp, steel rails, width 145mm |
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| *Seatpost |
Size:Β XS, S, M Madone aero carbon seatpost, 0mm offset, short |
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Size:Β ML, L, XL Madone aero carbon seatpost, 0mm offset, long |
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| *Handlebar |
Size:Β XS Bontrager Comp, alloy, 31.8mm, reach 80mm, drop 121mm, control width 36cm, drop width 40cm |
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Size:Β S, M Bontrager Comp, alloy, 31.8mm, reach 80mm, drop 121mm, control width 38cm, drop width 42cm |
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Size:Β ML, L Bontrager Comp, alloy, 31.8mm, reach 80mm, drop 121mm, control width 40cm, drop width 44cm |
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Size:Β XL Bontrager Comp, alloy, 31.8mm, reach 80mm, drop 121mm, control width 42cm, drop width 46cm |
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| *Handlebar stem |
Size:Β XS Trek RCS Pro, -7 degrees, length 80mm |
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Size:Β S, M Trek RCS Pro, -7 degrees, length 90mm |
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Size:Β ML, L Trek RCS Pro, -7 degrees, length 100mm |
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Size:Β XL Trek RCS Pro, -7 degrees, length 110mm |
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| Brake rotor | Shimano RT70, Centerlock, 160mm |
| Disc size | Max brake rotor size: 180mm front, 160mm rear |
We reserve the right to make changes to product information on the site at any time without notice, including data related to equipment, specifications, models, colors, materials, and prices. Due to supply chain issues, compatible parts may be replaced at any time without notice.
Bicycle and frame weights refer to pre-production painted products at the time of printing. The finished product weight may vary.
Measurements
| Size | Rider height | Inseam |
|---|---|---|
| XS |
143 - 158 cm 4'8" - 5'2" |
67 - 74 cm 26" - 29" |
| S |
158 - 162 cm 5'2" - 5'4" |
74 - 76 cm 29" - 30" |
| M |
162 - 173 cm 5'4" - 5'8" |
76 - 81 cm 30" - 32" |
| ML |
173 - 179 cm 5'8" - 5'10" |
81 - 84 cm 32" - 33" |
| L |
179 - 188 cm 5'10" - 6'2" |
84 - 88 cm 33" - 35" |
| XL |
188 - 213 cm 6'2" - 7'0" |
88 - 100 cm 35" - 39" |