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The Speed Concept SLR 9 is an aerodynamic carbon triathlon bike engineered for incredible speed and seamless integration.
The Speed Concept SLR 9 is an aerodynamic carbon triathlon bike engineered for incredible speed and seamless integration.
Trek

Trek Speed Concept SLR 9 Di2 Time Trial/Triathlon Bike 2025 in Carbon Red Smoke

£11,250.00
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Trek Speed Concept SLR 9 Di2 Time Trial/Triathlon Bike 2025 in Hex Blue/Trek Black Trek Speed Concept SLR 9 Di2 Time Trial/Triathlon Bike 2025 in Emerald Iris/Black
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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
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Hassle free returns

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 to ensure your items are received by us. We cannot assume responsibility for items that are lost in the post.

Returning an item

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

Bikes & Bulky items

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.

Non Bike - Customer Returns Form

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.

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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 £24.99 for collection. If you do not have the original box, 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 9 Di2 Time Trial/Triathlon Bike 2025 in Carbon Red Smoke

Season:2025

Brand:Trek

Code:35757RED

The Speed Concept SLR 9 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.

You leave it all on the course and want a tri bike that does the same. You want blazing-fast aero speed, a Shimano Dura-Ace 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, Shimano Dura-Ace wireless electronic 12-speed drivetrain, fully integrated handlebar and stem, Bontrager Hilo Pro Carbon triathlon-specific saddle for an aggressive aero position, disc brakes for reliable stopping power and aero Bontrager Aeolus RSL 51 OCLV Carbon wheels.

The Speed Concept is as fast as it is smart. Its simple, thoughtful design and integrated features ensure a less stressful race day, help you achieve your fastest bike splits ever and set you up for a successful run. The SLR 9 also gives you the performance boost of Shimano's best drivetrain and high-end Bontrager carbon wheels.

Key Features & Benefits:

  • Hydraulic Disc Brakes:Superb braking power.
  • Shimano Dura-Ace:Electronic top tier 12 Speed, with wireless performance and smoothness.
  • Carbon Fibre Frame:Super Lightweight & Durable, the Top Tube IsoSpeed takes the edge off rough roads.

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:Shimano Dura-Ace hydraulic disc, R9180 Di2 lever, R9270 calliper, 160mm rotor
  • Chainset:Shimano Dura-Ace R9200, 52/36, 170 - 175 mm length
  • Chainrings:36/52T
  • Rear Cassette:Shimano Dura-Ace R9200, 11-30, 12-speed
  • Chain:Shimano Dura-Ace/XTR M9100, 12-speed
  • Front Derailleur:Shimano Dura-Ace R9250 Di2, braze-on, down swing
  • Rear Derailleur:Shimano Dura-Ace R9250 Di2, 34T max cog
  • Bottom Bracket:Praxis, 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 RSL 51, OCLV Carbon, Tubeless Ready, 51mm rim depth, 100x12mm thru axle
  • Rear Hub:Bontrager Aeolus RSL 51, OCLV Carbon, Tubeless Ready, 51mm rim depth, Shimano 11/12 freehub, 142x12mm thru axle
  • Front Tyre:Bontrager R4 320, 700x25 mm
  • Rear Tyre:Bontrager R4 320, 700x25 mm
  • Brakes:Shimano Dura-Ace hydraulic disc
  • Handlebars:Speed Concept cockpit
  • Handlebar Tape:Bontrager Supertack Perf tape
  • Stem:Bontrager see handlbar
  • Saddle:Bontrager Hilo Pro Carbon
  • Seatpost:Speed Concept SLR, 11.5 mm or -20 mm offset
  • Accessories:Speed Concept Downtube Bottle Cage & Bottle
  • Weight:M- 8.70 kg/19.19 lb
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
  • Fork
    SC full foil carbon, integrated brake & stem
  • Frame fit
    Triathlon
  • Wheel front
    Bontrager Aeolus RSL 51, OCLV Carbon, Tubeless Ready, 51 mm rim depth, 100x12 mm thru axle
  • Wheel rear
    Bontrager Aeolus RSL 51, OCLV Carbon, Tubeless Ready, 51 mm rim depth, Shimano 11/12 freehub, 142x12 mm thru axle
  • Skewer rearBontrager Switch thru-axle, removable lever
    Bontrager Switch thru-axle, removable leverBontrager Switch thru-axle, removable lever
  • TyreBontrager R3 Hard-Case Lite, aramid bead, 120 tpi, 700x25 c
    Bontrager R3 Hard-Case Lite, aramid bead, 120 tpi, 700x25 cBontrager R3 Hard-Case Lite, aramid bead, 120 tpi, 700x25 c
  • Max tyre size
    28c rear, 25c front
  • Shifter
    Shimano Dura-Ace hydraulic disc, R9180 lever, R9270 calliper, 160 mm rotor
  • Front derailleur
    Shimano Dura-Ace R9250, braze-on, down swing
  • Rear derailleur
    Shimano Dura-Ace R9250
  • Crank
    Size: S, Shimano Dura-Ace R9200, 52/36, 170 mm length
    Size: M/L, Shimano Dura-Ace R9200, 52/36, 172.5 mm length
    Size: XL, Shimano Dura-Ace R9200, 52/36, 175 mm length
  • Bottom bracketPraxis, T47 threaded, internal bearing
    Praxis, T47 threaded, internal bearingPraxis, T47 threaded, internal bearing
  • Cassette
    Shimano Dura-Ace R9200, 11-30, 12-speed
  • Chain
    Shimano Dura-Ace/XTR M9100, 12-speed
  • SaddleBontrager Hilo Pro Carbon
    Bontrager Hilo Pro CarbonBontrager Hilo Pro Carbon
  • Seatpost
    Size: S, Speed Concept SLR, 11.5mm or -20mm offset, short length
    Size: M/L/XL, Speed Concept SLR, 11.5mm or -20mm offset, tall length
  • Integrated Bar Stem
    Speed Concept mid-rise bar/stem
  • Handlebar tapeBontrager Supertack Perf tape
    Bontrager Supertack Perf tapeBontrager Supertack Perf tape
  • Brake rotor
    Shimano MT900, 160 mm, CenterLock
  • Charger
    Charging cable included
  • Cage
    Speed Concept Downtube Bottle Cage
  • Bottle
    Speed Concept Downtube Bottle
  • Weight
    M - 19.18 lbs / 8.7 kg
  • Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
Sizing Information
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