Trek

Trek Madone SL 6 Gen 8 2025

$6,499.99
$6,499.99
$6,499.99
Tax included.
If what you're looking for is unavailable call our store 1300 436 379
Color: Matte Dark Web
Size:

The Madone SL 6 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 comfortable on the climbs and perched for the attack. A Shimano 105 Di2 electronic group set keeps the price down without sacrificing lightning-fast electronic shifting. Plus, it's topped off with carbon wheels for extra lightweight performance.

Overview

Specifications

Sizing

Overview

It's right for you if...

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 love the workhorse performance of Shimano's 105 group set, but want the added benefit of Di2 lightning-fast electronic shifting.

The tech you get

An ultra-light OCLV 500 Carbon frame with aero tubing and IsoFlow comfort technology. A 2x12 Shimano 105 Di2 electronic group set that delivers clean shifts thanks to trickle-down tech. Plus, it's topped off with Bontrager Aeolus Elite 35 carbon wheels that come set up tubeless.

The final word

The Madone SL 6 Gen 8 delivers race-worth aerodynamics and climb crushing weight. It's a bonafide superbike in a more economical package, thanks to its 500-Series OCLV Carbon lay-up and workhorse Di2 group set. It offers the same frame tech as its SLR sibling, like aero tube shaping and lightweight IsoFlow comfort tech, so you can stay at the front of the pack.


Why you'll love it

  1. The Revolutionary Full System Foil aero tube shapes redefine what fast looks like and help optimise aerodynamics around the whole bike
  2. A more economical 500 Series OCLV Carbon frame and new tube shaping shave weight where it matters most to help you fly up climbs
  3. Carbon wheels keep weight down and performance up, so you can crush climbs and soar down descents
  4. You get lightning-fast shifts that stay crisp and clean thanks to Shimano's Di2 tech trickling down to their 105 group set
  5. Lightweight, race-focused IsoFlow comfort tech helps you ride stronger longer without sacrificing weight or aerodynamics
  6. This bike comes set up tubeless – a first in Trek performance road history

Specifications

*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
Weight ML - 8.16 kg / 17.99 lbs (with TLR sealant, no tubes)
Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 125 kg (275 lb).
E-system
Battery Shimano BT-DN300
Charger Charging cable included
Drivetrain
*Shifter Size: XS, S, M, ML, L, XL
Shimano 105 R7170, 12-speed
Size: XS, S, M, ML, L, XL
Shimano 105 R7170 Di2, 12-speed
Front derailleur Shimano 105 R7150 Di2, braze-on, down swing
Rear derailleur Shimano 105 R7150 Di2, 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
Max. chainring size 1x: 54T, 2x: 56/43
Wheels
Wheel front Bontrager Aeolus Elite 35, OCLV Carbon, Tubeless Ready, 35 mm rim depth, 100x12 mm thru axle
Wheel rear Bontrager Aeolus Elite 35, OCLV Carbon, Tubeless Ready, 35 mm rim depth, Shimano 11/12-speed freehub, 142x12 mm thru axle
Skewer front Bontrager Switch chamfered thru axle, removable lever
Skewer rear Bontrager Switch chamfered thru axle, removable lever
Tyre Bontrager R3 Hard-Case Lite, Tubeless Ready, aramid bead, 170 tpi, 700x28 mm
Tyre part Bontrager TLR sealant, 180 ml/6 oz
Rim strip Bontrager TLR
Max tyre size 32 mm (as measured, see manual for details)
Components
*Saddle Size: XS, S
Bontrager Aeolus Comp, steel rails, 155 mm width
Size: XS, S, M, ML, L, XL
Verse Short, steel rails, 145 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
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
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

We 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.

Sizing

How tall are you?

To measure your height, stand up straight, barefoot, with your back, heels, shoulders and head all touching a wall. While looking straight ahead, place a book or straight edge on your head and slowly push it against the wall. Your straight edge should be parallel with the floor. Mark the spot where the bottom of the book is touching the wall. The distance from the marked spot to the floor is your height.

What is your inside leg?

How to measure: Stand barefoot with your back straight and against a wall. Tuck a ruler or something that extends to the floor between your legs. Using both hands, and keeping it level, pull the ruler up into your crotch as if you were sitting on the saddle. Measure the distance from the top edge of the ruler to the ground to find your inside leg measurement. Your inside leg is very important to your final bike size so please measure carefully.

Sizing

size-table
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"


Geometry

All measurements provided in cm unless otherwise stated.

Frame size letter Wheel size A — Seat tube B — Seat tube angle C — Head tube length D — Head angle E — Effective top tube G — Bottom bracket drop H — Chainstay length I — Offset J — Trail K — Wheelbase L — Standover M — Frame reach N — Frame stack Saddle rail height min (w/short mast) Saddle rail height max (w/short mast) Saddle rail height min (w/tall mast) Saddle rail height max (w/tall mast)
XS 700c 40.4 73.8° 10.0 71.6° 51.7 7.2 41.0 5.0 6.1 97.1 70.4 37.0 50.7 54.9 61.2 59.2 65.4
S 700c 44.0 73.8° 12.1 72.2° 53.2 7.2 41.0 4.5 6.2 97.6 73.4 37.8 53.0 58.5 64.8 62.8 69.0
M 700c 47.6 73.6° 13.6 72.9° 54.5 7.0 41.0 4.5 5.8 98.1 76.2 38.4 54.6 62.1 68.4 66.4 72.6
ML 700c 51.2 73.4° 15.0 73.5° 55.7 7.0 41.0 4.0 5.9 98.0 79.0 38.9 56.2 65.7 72.0 70.0 76.2
L 700c 54.8 73.4° 17.2 73.8° 56.8 6.8 41.1 4.0 5.7 99.0 82.0 39.4 58.2 69.3 75.6 73.6 79.8
XL 700c 60.9 73.4° 20.1 73.9° 58.4 6.8 41.2 4.0 5.7 100.7 86.3 40.2 61.0 75.4 81.7 79.7 85.9

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