Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV Carbon frame and IsoFlow aerodynamics
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV Carbon frame, sleek design.
Trek Madone SLR 9 AXS Gen 8 road bike with SRAM RED eTap AXS, carbon frame, Aero design, and IsoFlow integration.
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV Carbon frame, and IsoFlow aero design.
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV carbon frame, and IsoFlow design.
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV Carbon frame, and IsoFlow aero design.
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV Carbon frame, and IsoFlow aero design.
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV Carbon frame and IsoFlow aerodynamics
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV Carbon frame, sleek design.
Trek Madone SLR 9 AXS Gen 8 road bike with SRAM RED eTap AXS, carbon frame, Aero design, and IsoFlow integration.
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV Carbon frame, and IsoFlow aero design.
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV carbon frame, and IsoFlow design.
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV Carbon frame, and IsoFlow aero design.
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV Carbon frame, and IsoFlow aero design.

Trek Madone SLR 9 AXS Gen 8 – SRAM RED eTap AXS, 900 Series OCLV Carbon, IsoFlow Aero Road Bike
Brand: Trek
SKU: 5319523
£10,396.35
£10,500.00
£10,396.35
Save £103.65
Size: XS
Colour: Matte, Gloss Carbon Smoke
Subtotal: £10,396.35
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Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV Carbon frame and IsoFlow aerodynamics

Trek Madone SLR 9 AXS Gen 8 – SRAM RED eTap AXS, 900 Series OCLV Carbon, IsoFlow Aero Road Bike

£10,500.00 £10,396.35
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV Carbon frame and IsoFlow aerodynamics
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV Carbon frame, sleek design.
Trek Madone SLR 9 AXS Gen 8 road bike with SRAM RED eTap AXS, carbon frame, Aero design, and IsoFlow integration.
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV Carbon frame, and IsoFlow aero design.
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV carbon frame, and IsoFlow design.
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV Carbon frame, and IsoFlow aero design.
Trek Madone SLR 9 AXS Gen 8 aero road bike with SRAM RED eTap AXS, 900 Series OCLV Carbon frame, and IsoFlow aero design.

Trek Madone SLR 9 AXS Gen 8 – SRAM RED eTap AXS, 900 Series OCLV Carbon, IsoFlow Aero Road Bike

£10,500.00 £10,396.35
Size: XS
Colour: Matte, Gloss Carbon Smoke
Description
Description
x

The Trek Madone SLR 9 AXS Gen 8 is Trek's flagship aero road racing bike — the top-specification complete build on the Gen 8 Madone platform. The frame is 900 Series OCLV Carbon, Trek's highest-grade carbon fibre construction, shaped around the Gen 8's defining feature: IsoFlow. IsoFlow is an opening in the seat tube that allows the seatstays to flex independently of the main frame structure, providing vertical compliance and vibration damping without the weight or complexity of a separate suspension system. The result is a bike that is simultaneously more aerodynamic than its predecessor (the IsoFlow opening reduces drag by allowing air to pass through the frame) and more comfortable over long distances and rough road surfaces. The frame is manufactured in Germany.

The complete build is centred on SRAM RED eTap AXS — SRAM's top-tier wireless electronic groupset with hydraulic disc brakes, providing precise, effortless shifting and powerful braking. The cockpit is the Trek Aero RSL one-piece carbon bar and stem, fully integrated to eliminate external cable routing and reduce aerodynamic drag. Wheels are carbon, matched to the frame's aero profile. The Interstellar colour option is a premium finish at a higher price point; the remaining four colours — Matte/Gloss Carbon Smoke, Navy Smoke, Carbon Red Smoke, and Era White — are standard pricing. Available in six sizes: XS, S, M, ML, L, and XL. For the 1x drivetrain variant, see the Trek Madone SLR 9 AXS Gen 8 1x. For a custom build, see the Trek Madone SLR Gen 8 Frameset. Browse our full road bikes collection.

What It's Good For

  • Aero road racing and competitive cycling at the highest level
  • 900 Series OCLV Carbon — Trek's highest-grade carbon construction, made in Germany
  • IsoFlow — simultaneous aerodynamic and compliance benefit via the seat tube opening
  • SRAM RED eTap AXS — wireless electronic shifting with hydraulic disc brakes
  • Integrated Trek Aero RSL one-piece carbon cockpit — clean cable routing, reduced drag
  • 5 colour options including premium Interstellar finish
  • 6 sizes: XS, S, M, ML, L, XL

What It's NOT Good For

  • Off-road or gravel riding — road-specific geometry and tyre clearance
  • Riders seeking a lighter climbing bike over an aero platform — see the Trek Émonda SLR for a pure climbing focus
  • Casual or commuter use — a race-focused bike optimised for performance, not practicality

Frequently Asked Questions

What is IsoFlow and how does it work?
IsoFlow is an opening in the seat tube of the Madone Gen 8 frame that serves two purposes simultaneously. Aerodynamically, it allows air to pass through the frame rather than around it, reducing drag. Mechanically, it allows the seatstays to flex independently of the main frame structure, providing vertical compliance and vibration damping at the rear of the bike. Previous generations of the Madone used a separate IsoSpeed decoupler to achieve compliance; IsoFlow integrates both functions into the frame structure itself, saving weight and complexity.

What is the difference between this bike and the Madone SLR 9 AXS Gen 8 1x?
This listing is the standard 2x (double chainring) SRAM RED eTap AXS build with a front derailleur and two chainrings, providing a wider gear range suited to varied terrain and racing. The 1x variant uses a single chainring without a front derailleur, reducing weight and mechanical complexity at the cost of overall gear range. The 1x setup is preferred by some riders for criterium racing or flat courses; the 2x is more versatile for mixed terrain and longer events.

What does the Interstellar colour option include?
The Interstellar finish is a premium colour option on the Madone SLR 9 Gen 8, priced higher than the standard colour options. It features a distinctive finish that differs from the standard Smoke and Era White colourways. If you're considering the Interstellar option, contact us to confirm current availability and lead times.

Can I get a custom build using the Madone SLR frame?
Yes — the Trek Madone SLR Gen 8 Frameset is available separately, allowing you to specify your own groupset, wheels, and components. Contact us to discuss a custom build.

Read more
Specification
Specification
x
Fork Madone Gen 8 full carbon, tapered carbon steerer, internal brake routing, flat mount disc, 12x100mm chamfered thru axle
Tyres Bontrager Aeolus RSL RD, Tubeless-Ready, cotton construction, aramid bead, 170 tpi, 700x28 mm
Rear mech SRAM RED AXS E1, 36T max cog
Wheelset Bontrager Aeolus RSL 51
Handlebar Trek Aero RSL Road integrated bar/stem, OCLV Carbon, Race Fit, 80 mm reach, 124 mm drop, 35 cm control width, 38 cm drop width, 80 mm stem length
Shifters SRAM
Cassette SRAM RED XG-1290 E1, 10-33, 12-speed
Chain SRAM RED E1, 12-speed
Chainset SRAM RED AXS E1, power meter, 48/35, DUB, 165 mm length
Bottom bracket SRAM DUB, T47 threaded, internal bearing
Saddle Aeolus RSL, carbon rails, 155 mm width
Seat post Madone aero carbon seat post, 0 mm offset, short length
Battery SRAM eTap battery pack (with charger)
Front mech SRAM RED AXS E1, braze-on
Read more
Shipping & Returns
Shipping & Returns
x

Shipping

Stock Status Instock - Instore - Item Usually shipped or available for shop collection, within 48 hours (Mon-Fri)

Instock - Supplier Warehouse - Item is held in Suppliers Warehouse, Depending on the the supplier transfer time can vary from 24 Hours to 14 Days for item held in European warehouse.

(over festive periods some suppliers shut from 24th Dec-2nd Jan so orders can be delayed through this period.)

Brands held in European website include Trek, Bontrager, Electra, Wahoo, Rapha. For up-to-date transfer times please call customer services on +44 (0)1782 768622

Most out products are shipped by FedEx, providing unprecedented reliability and speed. Lightweight Spares below £25.00 value have a Royal Mail postage option, which is sent via Tracked 48 service. - £2.99

Shipping on all Domestic Orders over £50.00 (excluding bikes and home trainers) for delivery within the UK is completely FREE!

Bike and Home Trainers and oversize Goods £15.00 - FedEx

White Glove Bike Delivery - our white glove option has your bike personally delivered to you by a fully trained Mechanic and Bike fitter - £99.99

(Certain bikes will only have this option such as Cargo Bikes)

To Qualify for FREE Shipping:

  1. Your delivery address must be within the United Kingdom Mainland (Channel Islands, Isle of Mann and Scottish Isles are not Mainland)
  2. Your order, after any discounts, must be £50.00 or over. For all other orders, including those under £50.00 there is a maximum postage charge of £5.99

In some cases, we may ship items out with another courier, depending on the status and availability of items ordered. (Customers will not be charged more and will be refunded any unused postage cost) If part of an order is cancelled and the total drops below the £50.00 free postage, a postage charge may be taken. 

Delivery costs will be clearly stated on the checkout page, though you will need to register (to provide your delivery address) in order to see the delivery costs. 

If you have any questions about delivery charges, times or none delivery please do not hesitate to get in touch by email:store@swinnertoncycles.co.uk or by telephone on +44 (0)1782 768622. Handling is normally 48 hours, but at busy periods this may be extended but we will endeavor to process your order within 5 working days. Please bear in mind in some cases orders can take longer to process, please contact us for more details.

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

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Reviews
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