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The Speed Concept SLR 8 AXS is an aerodynamic carbon triathlon bike engineered for incredible speed and seamless integration.
The Speed Concept SLR 8 AXS is an aerodynamic carbon triathlon bike engineered for incredible speed and seamless integration.
Trek

Trek Speed Concept SLR 8 AXS Time Trial/Triathlon Bike 2025 in Carbon Red Smoke

£8,010.00 £8,900.00 10% off
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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
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In the unlikely event that you are not satisfied with your purchase please feel free to return your items within 90 days of the purchase date for a full exchange or refund. Any item (excluding food, underwear or e-gift vouchers) can be returned to us for any reason within 90 days, provided that the item has not been used or fitted and is returned in its original packaging with valid proof of purchase.

It is recommended that you use a recorded delivery service or return to a store to ensure your items are received by us. We cannot assume responsibility for items that are lost in transit back to us.

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Online or in-store purchases can be returned to any of our 12 stores free of charge or can be returned by post or courier at your cost after completing the online returns form below. If you are returning an item due to a fault, we will refund your postage costs.

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If you wish to return a bike or bulky item to us, please keep the box it arrived in and let us know by contacting our support team via our online webchat, email or by phone (020 45063856) and we will help arrange a collection.

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If you wish to return or exchange an item, please fill out the form below following the steps inside. Returns can be processed quicker if all required information is provided.




Terms & Conditions

Items must be returned in their original packaging and unused. Refunds will be issued once the product(s) have been received and inspected.

Click & Collect customers can buy with confidence knowing that they can review the item before deciding whether it is right for you before leaving the store. Should you decide it's not right for you, it can be conveniently exchanged or refunded straight away, or you still have up to 90 days to return it if you are still unsure.

Please note:
1. If the items we have sent you are faulty, damaged or not as we described, we will cover the cost of collection and the delivery of the correct item.

2. If we have delivered the correct bike but upon inspection, you decide the bike is not the one for you, we will charge you £50 for collection (£100 from Northern Ireland). If you do not have the original box in usable condition, we will charge you an additional £15 to provide one.

Refunds will be processed using the same method of payment used for the original purchase. Credit & debit card refunds must be made to the card used for the original purchase.

We are unable to offer a refund without a valid proof of purchase.

Trek Speed Concept SLR 8 AXS Time Trial/Triathlon Bike 2025 in Carbon Red Smoke

Season:2025Sale

Brand:Trek

Code:49162RED

The Speed Concept SLR 8 AXS is an aerodynamic carbon triathlon bike engineered for incredible speed and seamless integration.

Every bit of this bike – from the light aero frame to ride-smoothing IsoSpeed to cutting-edge fuel and hydration systems – has been painstakingly designed to help you beat your PR again, and again, and again. It comes equipped with cream-of-the-crop components for your best performance yet, including clean-shifting SRAM RED AXS wireless shifting.

You leave it all on the course and want a tri bike that does the same. You want blazing-fast aero speed, SRAM RED wireless electronic drivetrain for precise shifts and loads of integrated accessories that make hydrating and re-fuelling easy.

Ultra-lightweight 800 Series OCLV Carbon frame, drag-reducing Kammtail Virtual Foil (KVF) tube shaping, Speed Concept full foil carbon fork, road-smoothing IsoSpeed, integrated fuel storage, hydration and flat kit storage, SRAM RED AXS wireless electronic 12-speed drivetrain with SRAM AXS Blips shifters, a RED AXS power meter, integrated handlebar and stem, Bontrager Hilo Pro Carbon triathlon-specific saddle, disc brakes and aero Bontrager Aeolus Pro 51 OCLV Carbon wheels.

The Speed Concept SLR 8 AXS is as fast as it is smart. Its simple, thoughtful design and integrated features help you achieve your fastest bike splits ever, and set you up for a successful run. The SLR 8 also gives you the performance boost of SRAM's RED AXS wireless electronic drivetrain and high-end Bontrager OCLV Carbon wheels.

Key Features & Benefits:

  • Smart Integrated Fuel and Hydration Storage:Makes it simple and stress-free to stay strong without leaving your aero position.
  • Updated SRAM RED AXS Drivetrain:Smart, smooth, wireless, ergonomic and extremely light.
  • SRAM RED AXS Power Meter Included:For more effective training rides from the start.

Full Specification:

  • Frame:800 Series OCLV Carbon, KVF (Kammtail Virtual Foil) tube shape, T47 BB, integrated Bento box, integrated downtube storage
  • Fork:SC full foil carbon, integrated brake & stem
  • Number of Gears:24
  • Gear Shifters:SRAM eTap AXS BlipBox, SRAM eTap AXS Wireless Blips, base bar-mounted
  • Chainset:SRAM RED AXS, power meter, 48/35, DUB, S:165 mm, M/L: 170 mm, XL: 172.5 mm length
  • Chainrings:48/35T
  • Rear Cassette:SRAM XG-1290, 10-33, 12-speed
  • Chain:SRAM RED E1, 12-speed
  • Front Derailleur:SRAM RED eTap AXS, braze-on
  • Rear Derailleur:SRAM RED eTap AXS, 36T max cog
  • Bottom Bracket:SRAM DUB, T47 threaded, internal bearing
  • Pedals:Not supplied:Shop pedals here
  • Rims:Bontrager Aeolus RSL 51, OCLV Carbon, Tubeless Ready, 51mm rim depth
  • Front Hub:Bontrager Aeolus Pro 51, OCLV Carbon, 100x12mm thru axle
  • Rear Hub:Bontrager Aeolus Pro 51, OCLV Carbon, SRAM XD-R driver, 142x12mm thru axle
  • Front Tyre:Bontrager R3 Hard-Case Lite, aramid bead, 120 tpi, 700x25 mm
  • Rear Tyre:Bontrager R3 Hard-Case Lite, aramid bead, 120 tpi, 700x25 mm
  • Brakes:SRAM S-900 Aero, SRAM CentreLine X Rotors, CentreLock, round edge, 160 mm
  • Handlebars:Speed Concept Cockpit Tower Topper - S: Near (30mm base tower), M/L/XL: Mid (45mm base tower)
  • Handlebar Tape:Bontrager Supertack Perf tape
  • Stem:Speed Concept mid-rise bar/stem
  • Saddle:Bontrager Hilo Comp, hollow chromoly rails
  • Seatpost:Speed Concept SLR, 11.5 mm or -20 mm offset, S: Short length, M/L/XL: Tall length
  • Accessories:Speed Concept Downtube Bottle Cage & Bottle
  • Weight:M - 9.05 kg / 19.96 lbs
Manufacturers reserve the right to change specifications without notice based on availability at the point of assembly.


Size Guide for Trek Speed Concept

SizeRider HeightInseam
S154 - 167 cm5'1" - 5'6"72 - 80 cm28" - 31"
M167 - 175 cm5'6" - 5'9"77 - 83 cm30" - 33"
L175 - 186 cm5'9" - 6'1"82 - 88 cm32" - 35"
XL186 - 198 cm6'1" - 6'6"87 - 93 cm34" - 37"

Geometry Information for TrekSpeed Concept

Frame size letterSMLXL
Wheel size700c700c700c700c
A — Seat tube49.952.554.957.4
B — Seat tube angle78.0°78.0°78.0°78.0°
C — Head tube length6.5911.514
D — Head angle72.2°72.5°72.5°72.5°
E — Effective top tube49.551.854.156.5
G — Bottom bracket drop8888
H — Chainstay length41414141
I — Offset4.54.54.54.5
J — Trail6.1666
K — Wheelbase96.799.5102104.7
L — Standover7678.580.883.1
M — Frame reach3941.642.644.5
N — Frame stack49.251.754.156.5
Saddle rail height min (w/short mast)55.95860.462.8
Saddle rail height max (w/short mast)66.669.271.574
Saddle rail height min (w/tall mast)64.96769.471.8
Saddle rail height max (w/tall mast)75.678.280.583

Warranty Information for Trek:

Lifetime warranty on Frame sets (frame and rigid fork), main frame and full suspension swing arms for the lifetime of the original owner, and Bontrager wheels with carbon rims.

2-year warranty on Rear suspension linkage components, including bearings, rocker link and accompanying hardware and components, Bontrager wheels with alloy rims, Paint and transfers.

For full warranty policy please visit trekbikes.com

Technical Information
  • Frame
    800 Series OCLV Carbon, KVF (Kammtail Virtual Foil) tube shape, T47 BB, integrated Bento box, integrated downtube storage
  • Wheel Front
    Bontrager Aeolus Pro 51, OCLV Carbon, Tubeless Ready, 100x12 mm thru axle
  • Wheel Rear
    Bontrager Aeolus Pro 51, OCLV Carbon, Tubeless Ready, Shimano 11/12-speed freehub, 142x12 mm thru axle
  • Skewer Front
    Bontrager Switch thru-axle, removable lever
  • Skewer Rear
    Bontrager Switch thru-axle, removable lever
  • Rim
    Bontrager Aeolus Pro 51, OCLV Carbon, Tubeless-Ready
  • Tyre
    Bontrager R3 Hard-Case Lite, aramid bead, 120 tpi, 700x25 mm
  • Max Tyre Size
    28mm rear, 25mm front
  • Battery
    SRAM eTap battery pack (with charger)
  • Shifter
    Size: S, M, L, XL SRAM eTap AXS Wireless Blips, base bar-mounted Size: S, M, L, XL SRAM eTap AXS BlipBox Size: S, M, L, XL SRAM eTap Clics, extension-mounted
  • Front Derailleur
    SRAM RED eTap AXS, braze-on
  • Rear Derailleur
    SRAM RED eTap AXS, 36T max cog
  • Crank
    Size: S, M, L SRAM RED AXS, power meter, 48/35, DUB, 170 mm length Size: S SRAM RED AXS w/ power meter, 48/35, DUB, 165 mm length Size: XL SRAM RED AXS, power meter, 48/35, DUB, 175 mm length Size: XL SRAM RED AXS, power meter, 48/35, DUB, 172.5 mm length
  • Bottom Bracket
    SRAM DUB, T47 threaded, internal bearing
  • Cassette
    SRAM XG-1290, 10-33, 12-speed
  • Chain
    SRAM RED D1, 12-speed
  • Max. Chainring Size
    1x: 58T, 2x: 55/44
  • Saddle
    Bontrager Hilo Comp, hollow chromoly rails
  • Seatpost
    Size: S Speed Concept SLR, 11.5 mm or -20 mm offset, short length Size: M, L, XL Speed Concept SLR, 11.5 mm or -20 mm offset, tall length
  • Handlebar Part
    Size: S, M Speed Concept 30 mm Base Tower Size: S, M, L, XL Speed Concept 45 mm Base Tower Size: S Speed Concept Cockpit Tower Topper Near Size: M, L, XL Speed Concept Cockpit Tower Topper Mid Size: L, XL Speed Concept 60 mm Base Tower
  • Handlebar/Stem (Integrated)
    Speed Concept mid-rise bar/stem
  • Brake Rotor
    SRAM CentreLine X, CentreLock, round edge, 160 mm
  • Brake Lever
    SRAM S-900 Aero
  • Rotor Size
    Max brake rotor sizes: 160mm front & rear
  • Cage
    Speed Concept Downtube Bottle Cage
  • Bottle
    Speed Concept Downtube Bottle
  • Weight
    M - 9.05 kg / 19.96 lbs
  • Weight Limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 125 kg (275 lb)
Sizing Information
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