Back

Cycle to Work available in-store – save around 28%. NHS, NIFRS, PSNI & Civil Service vouchers accepted.

How it works →
Trek

Trek Madone SL 6 Gen 8 Road Bike – 2025

£4,250.00

Trek 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. Size or colour not shown? Message us

Clear
  • Built and checked in our workshop
  • Free collection in Limavady or courier delivery across Northern Ireland, the UK & Ireland
Description
Frame500 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, 142×12 mm thru axle
ForkMadone Gen 8 full carbon, tapered carbon steerer, internal brake routing, flat mount disc, 12x100mm chamfered thru axle
ShifterShimano 105 R7170, 12-speed
Front derailleurShimano 105 R7150 Di2, braze-on, down swing
Rear derailleurShimano 105 R7150 Di2, 36T max cog
CrankSize: 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 bracketPraxis, T47 threaded, internal bearing
CassetteShimano Ultegra R8100, 11-30, 12-speed
ChainShimano Ultegra/XT M8100, 12-speed
Max. chainring size1x: 50T, 2x: 54/40
Wheel frontBontrager Aeolus Pro 51, OCLV Carbon, Tubeless Ready, 100×12 mm thru axle
Wheel rearBontrager Aeolus Pro 51, Tubeless Ready, Shimano 11/12-speed freehub, 142×12 mm thru-axle
Skewer frontBontrager Switch thru-axle, removable lever
Skewer rearBontrager Switch thru-axle, removable lever
RimBontrager Aeolus Pro 51, OCLV Carbon, Tubeless Ready
TyreBontrager R3 Hard-Case Lite, aramid bead, 120 tpi, 700×25 c
Tyre partBontrager TLR sealant, 180 ml/6 oz
Rim stripBontrager TLR
Max tyre size32 mm (as measured, see manual for details)
SaddleSize: XS, S
Bontrager Aeolus Comp, steel rails, 155 mm width
Size: M, ML, L, XL
Bontrager Aeolus Comp, steel rails, 145 mm width
SeatpostSize: 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
HandlebarSize: 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
StemSize: 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 rotorShimano RT70, CentreLock, 160 mm
Rotor sizeMax brake rotor sizes: 180 mm front, 160 mm rear

Good to know: manufacturers sometimes change specs, components, colours and graphics during a model year, so what you receive may differ slightly from the photos. If a detail matters to you, ask us before you buy and we'll check it for you.