0
Your Profile
Your Basket 0
Your Offers 0
Continue Shopping
Checkout
To improve your shopping experience today and in the future, this site uses cookies.
Read our full Privacy Policy & Cookie information here
I Accept Cookies
The Madone SL 5 Gen 8 is a lightweight aero road bike that brings elite racing tech to a lower price point.
The Madone SL 5 Gen 8 is a lightweight aero road bike that brings elite racing tech to a lower price point.
Trek

Trek Madone SL 5 Gen 8 Road Bike In Hex Blue

£3,250.00
Size Guide
Earn
in Customer Rewards when you buy this item today
Sign Up
Sign In
Trek Madone SL 5 Gen 8 Road Bike In Matte Deep Smoke
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
Earn Rewards
When you purchase this item, you will earn of rewards points to spend on your next purchase from us. You can spend your Rewards balance in-store & online.

Hassle free returns

Returns

In the unlikely event that you are dissatisfied with your purchase please feel free to return your goods within 30 days of the purchase date for a full exchange or refund. Any item (excluding food and underwear) can be returned to us for any reason provided it is returned in ‘showroom condition’, with its original packaging, tags and a valid receipt/delivery note.

It is your responsibility to ensure that the item is returned to us in a safe and secure manner, and in the event of a refund or exchange, in saleable condition (in original packaging and including all warranty, cards, manuals and accessories).

Customers are accountable for return shipping charges.

If you purchased an item in one of our stores, you may return the items to either of our stores.

Return Items by Post

  1. You should always keep proof of postage and we advise you to use a ‘signed for service’ when returning goods.
  2. Send your package using a recorded delivery method (always keep a copy of your receipt!) to the following address.
South Downs Bikes
Internet Department
28 West Street
Storrington
West Sussex
RH20 4EE

If you wish to return your bike to us please keep it in the box it arrived in and contact us and we will arrange a collection.

Please note the following:

  • a) If we have sent you the incorrect bicycle, we will cover the cost of collection and delivery of the correct model.
  • b) If we have delivered the bicycle you ordered, but upon inspection you decide it is not the bike for you, we will charge you £50.00 for the collection.

Please do not ride the bike as a full refund cannot be given if the bike has been used or damaged.

Trek Madone SL 5 Gen 8 Road Bike In Hex Blue

Season:2025

Brand:Trek

Code:46218BLU

The 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.

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're happy with more economical components that help you get on your dream bike faster.

The tech you get - An ultra-light OCLV 500 Carbon frame with aero tubing and IsoFlow comfort technology. A 2x12 Shimano 105 group set that delivers clean mechanical shifts without the faff of electronic group sets. Tubeless wheels that help fight punctures while reducing rolling resistance, and hydraulic disc brakes.

The final word - The Madone SL 5 Gen 8 is the perfect bike for someone looking for superbike performance at a lower price point. It offers the same frame tech as its SLR sibling, like aero tube shaping and lightweight IsoFlow comfort tech, but with a more economical build that leaves budget to spare for race entry fees and bike trips.

Features:
  • The Revolutionary Full System Foil aero tube shapes redefine what fast looks like and help optimise aerodynamics around the whole bike
  • A more economical 500 Series OCLV Carbon frame and new tube shaping shave weight where it matters most to help you fly up climbs
  • You get clean and reliable shifting without breaking the bank with Shimano's workhorse group set – 105
  • Lightweight, race-focused IsoFlow comfort tech helps you ride stronger longer without sacrificing weight or aerodynamics
Technical Information
  • 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
  • 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
  • Skewer front
    Bontrager Switch chamfered thru axle, removable lever
  • Hub rear
    Bontrager alloy, sealed bearing, CenterLock disc, Shimano 11-speed freehub, 142x12 mm thru axle
  • Skewer rear
    Bontrager Switch chamfered thru axle, removable lever
  • Rim
    Bontrager Paradigm SL, Tubeless Ready, 24-hole, 21 mm width, Presta valve
  • Spokes
    14 g stainless steel, black
  • Tyre
    Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x28 mm
  • Max tyre size
    32 mm (as measured, see manual for details)
  • 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
  • Max. chainring size
    1x: 54T, 2x: 56/43
  • *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
    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).
Sizing Information
Professional Opinion
Product Reviews
Write a review
0 As rated by 0 customers

Write a review for Trek Madone SL 5 Gen 8 Road Bike In Hex Blue

Your name
Your email address
How would you rate it?
Would you recommend this product?
Let others know your opinion
Submit Review Close
Question(s) answered about Trek Madone SL 5 Gen 8 Road Bike In Hex Blue
Ask a question
Question(s) asked regarding Trek Madone SL 5 Gen 8 Road Bike In Hex Blue

Ask a question

Your name
Your email address
Your phone number
Your question
Submit Question  Close
Home Road Cycling Bikes Trek Road Bikes