Madone SL 5 Gen 8
Trek
Aero
Madone SL 5 Gen 8 is a carbon aero road bike (2025), by Trek, from the Madone lineup. This setup will suit riders who want a sporty road feel without a full race fit, with a sporty riding position, and is best matched to paved roads. Based on the metrics, key strengths are a clearly aero-focused setup for faster road riding, strong value-for-money versus many similar bikes, and strong climbing friendliness for sustained uphill riding. At the same time, the main trade-off is a firmer ride feel than comfort-first options. Next step: compare this bike with other aero models on MatchBikes.com.
6.7
Rating

+6
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Score Summary
Performance
6.4
Value
9.0
Fit
6.0
Performance
Built for speed and efficiency
Speed
6.9
Medium
Climbing Efficiency
7.3
Climber
Aerodynamics
9.2
Full Aero
Fit
Dialed-in Fit & Comfort
Riding Position
6.7
Sporty
Fit Flexibility
7.2
Adjustable
Ride Comfort
3.1
Firm
Value
Value for Money
9.0
Exceptional Value
Surface Range
Road OnlySpecifications
General
Brand
Trek
Model
Madone SL 5 Gen 8
Year
2025
Price
$3,674
Weight
8.7 kg
Category
Road
Sub Category
Aero
Groupset
105
Frame
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
Suspension Fork
Madone Gen 8 full carbon, tapered carbon steerer, internal brake routing, flat mount disc, 12x100mm chamfered thru axle
Suspension Type
Rigid
Drivetrain
Shift Levers
Shimano 105 R7120, 12 speed
Rear Derailleur
Shimano 105 R7100, 36T max cog
Front Derailleur
Shimano 105 R7100, braze-on, down swing
Cassette
Shimano 105 7101, 11-34, 12 speed
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
Chain
Shimano SLX M7100, 12 speed
Wheels
Front Hub
Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle
Rear Hub
Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle
Rims
Bontrager Paradigm SL, Tubeless Ready, 24-hole, 21mm width, Presta valve
Spokes
14g stainless steel, black
Tires
Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x28mm
Brakes
Brake Type
Hydraulic Disc
Brake Description
Shimano RT70, centerlock, 160mm
Cockpit
Stem
Size: XS, Trek RCS Pro, -7 degree, 80mm length; Size: S, M, Trek RCS Pro, -7 degree, 90mm length; Size: ML, L, Trek RCS Pro, -7 degree, 100mm length; Size: XL, Trek RCS Pro, -7 degree, 110mm length
Handlebar
Size: XS, Bontrager Comp, alloy, 31.8mm, 80mm reach, 121mm drop, 36cm control width, 40cm drop width; Size: S, M, Bontrager Comp, alloy, 31.8mm, 80mm reach, 121mm drop, 38cm control width, 42cm drop width; Size: ML, L, Bontrager Comp, alloy, 31.8mm, 80mm reach, 121mm drop, 40cm control width, 44cm drop width; Size: XL, Bontrager Comp, alloy, 31.8mm, 80mm reach, 121mm drop, 42cm control width, 46cm drop width
Seat
Saddle
Size: XS, S, Bontrager Aeolus Comp, steel rails, 155mm width; Size: XS, S, M, ML, L, XL, Verse Short, steel rails, 145mm width; Size: M, ML, L, XL, Bontrager Aeolus Comp, steel rails, 145mm width
Seatpost
Size: XS, S, M, XL, Madone aero carbon seatpost, 0mm offset, short length; Size: ML, L, Madone aero carbon seatpost, 0mm offset, long length
Geometry
| Measurement | XS | SM | MD | MD/LG | LG | XL |
|---|---|---|---|---|---|---|
| Stack Reach Ratio | 1.37 mm | 1.402 mm | 1.422 mm | 1.445 mm | 1.477 mm | 1.517 mm |
| Bottom Bracket Height | 264 mm | 264 mm | 266 mm | 266 mm | 268 mm | 268 mm |
| Front Center | 572 mm | 577 mm | 581 mm | 580 mm | 589 mm | 604 mm |
| Rake | 50 mm | 45 mm | 45 mm | 40 mm | 40 mm | 41 mm |
| Trail | 61 mm | 62 mm | 58 mm | 59 mm | 57 mm | 57 mm |
| Stack | 507 mm | 530 mm | 546 mm | 562 mm | 582 mm | 610 mm |
| Reach | 370 mm | 378 mm | 384 mm | 389 mm | 394 mm | 402 mm |
| Top Tube Length | 517 mm | 532 mm | 545 mm | 557 mm | 568 mm | 584 mm |
| Seat Tube Angle | 73.8 ° | 73.8 ° | 73.6 ° | 73.4 ° | 73.4 ° | 73.4 ° |
| Seat Tube Length | 404 mm | 440 mm | 476 mm | 512 mm | 548 mm | 609 mm |
| Head Tube Angle | 71.6 ° | 72.2 ° | 72.9 ° | 73.5 ° | 73.8 ° | 73.9 ° |
| Head Tube Length | 100 mm | 121 mm | 136 mm | 150 mm | 172 mm | 201 mm |
| Chainstay Length | 410 mm | 410 mm | 410 mm | 410 mm | 411 mm | 412 mm |
| Wheelbase | 971 mm | 976 mm | 981 mm | 980 mm | 990 mm | 1007 mm |
| Bottom Bracket Drop | 72 mm | 72 mm | 70 mm | 70 mm | 68 mm | 68 mm |
| Standover Height | 704 mm | 734 mm | 762 mm | 790 mm | 820 mm | 863 mm |
| Wheels | 700 | 700 | 700 | 700 | 700 | 700 |
| Rider Min Height | 155 cm | 163 cm | 170 cm | 175 cm | 181 cm | 188 cm |
| Rider Max Height | 168 cm | 174 cm | 181 cm | 187 cm | 193 cm | 200 cm |




























































