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Carbon triathlon bike Trek Speed Concept SLR 7 AXS Force AXS serpentine 12-speed

Carbon triathlon bike Trek Speed Concept SLR 7 AXS serpentine red: wireless Force AXS, 9.02 kg in size M

CHF8,241.99 Incl. Tax

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Trek Speed Concept SLR 7 AXS serpentine: wireless time trialling

Here the Trek Speed Concept SLR 7 AXS wears the Serpentine colourway, a fade of reds from dark burgundy to vivid red. Under the paint: an OCLV Series 800 carbon frame with KVF tubes, a wireless SRAM Force AXS groupset with chainset power meter and Aeolus Pro 51 wheels, for 9.02 kg in size M. Sizes M, L and XL are detailed by Trek; size S has no crank length listed.

Technical specifications

Frame	OCLV Series 800 carbon, KVF tubes, IsoSpeed, T47 threaded bottom bracket, integrated Bento box and down tube storage
Fork	Speed Concept full-foil carbon, integrated brake calliper and stem
Drivetrain	SRAM Force AXS wireless 2x12, 48/35 DUB chainset with power meter, XG-1270 10-33 cassette
Brakes	SRAM hydraulic disc brakes, Paceline X Centerlock 160 mm rotors
Wheels / tyres	Bontrager Aeolus Pro 51 carbon / Bontrager R4 320 700x25 mm
Cockpit	Speed Concept mid-rise bar/stem with adjustable extensions
Saddle / seatpost	Bontrager Hilo Pro carbon / Speed Concept SLR seatpost, 11.5 or 20 mm offset
Weight	9.02 kg in size M (Trek figure)

At a glance

✓ OCLV 800 carbon frame, Bento box	✓ Wireless SRAM Force AXS 2x12
✓ Integrated power meter	✓ Aeolus Pro 51 carbon wheels
✓ Integrated down tube storage	✓ 9.02 kg in size M

Who is it for?

For the strong rider preparing for the individual time trials of their regional committee or team time trials, and for the duathlete who wants a fast bike on draft-free courses. It is aimed at riders who can already hold an aero position and want reliable data to progress.

The LVR workshop view

OCLV carbon, Trek's signature. OCLV is Trek's in-house process, in place since 1992: heat and pressure drive out the air trapped between the fibre sheets, and the higher the series number, the less material is needed for a given stiffness. The Speed Concept SLR 7 AXS uses Series 800, which was long the top of the brand's road range. Here it makes room for a Bento box and a down tube compartment without weakening the frame, which carries a Trek lifetime warranty.

	OCLV 800 (Speed Concept SLR)	OCLV 900 (Madone SLR)	OCLV 500 (Madone SL)
Level	Trek's former top-end road carbon	Trek's most advanced carbon	Entry-level road carbon
Construction	Lay-up optimised for large-section aero tubes	3D moulding, fewer fibre overlaps	Same process, slightly more material
Reference bike	Frame 1,522 g painted + fork 410 g	Madone SLR: frame 796 g (ML) + fork 350 g	Madone SL: frame 1,054 g (ML) + fork 363 g
What it means	Stiff and durable, integrated storage and IsoSpeed	Up to 20% stronger than OCLV 800	Heavier, more affordable budget

In short: a triathlon frame is not chosen by the gram. The 1,522 g of the Speed Concept are explained by deep sections and integration, assets that save far more time than a hundred grams or so on a fast course.

With no derailleur cables, the cockpit stays clean and easy to adjust: you can change the extension height without recabling everything, which saves real time when fine-tuning your position. The 51 mm rims hold their speed well on the long straights of a time trial.

In a time trial, the displayed power lets you split your effort between the outward leg and the return into the wind, a common situation around Béziers when the tramontane sets in. With the power meter fitted as standard, you can then analyse your races to refine your strategy.

Which Speed Concept should you choose?

Model	Carbon	Drivetrain	Wheels	Weight (size)
Speed Concept SLR 7	OCLV 800	Shimano Ultegra Di2	Aeolus Pro 37	8.97 kg (M)
Speed Concept SLR 7 AXS	OCLV 800	SRAM Force AXS + power meter	Aeolus Pro 51	9.02 kg (M)
Speed Concept SLR 9	OCLV 800	Shimano Dura-Ace Di2	Aeolus RSL 51	n/a (frame 1,522 g)
Speed Concept SLR 9 AXS	OCLV 800	SRAM RED AXS + power meter	Aeolus RSL 51	n/a (frame 1,522 g)

Our take: this SLR 7 AXS is the most affordable Speed Concept with a power meter; the SLR 9 AXS keeps the power meter but steps up to RED AXS E1 and RSL 51 wheels, with no complete bike weight published by Trek.

LVR sizing advice

Between two sizes, do not decide from the chart alone: the aero position depends on your flexibility and the height of the extensions. We set up the mid-rise bar and seatpost offset during the bike fit.

Size	S	M	L	XL
Rider height (cm)	154-167	167-175	175-186	186-198
Inseam (cm)	72-80	77-83	82-88	87-93
Cranks (mm)	n/a	170	170	172.5
Seatpost	short	tall	tall	tall

Source: Trek size guide. Bike fitting available in our Béziers shop.

Your questions

Is size S available?	It is in the catalogue, but Trek does not specify its crank length.
Easy to adjust the extensions?	Yes, the absence of derailleur cables makes adjustments easier.
Useful in a time trial?	Yes, the power meter helps you pace your effort over the course.
Batteries to think about on race day?	Remember to charge them the day before, like a GPS computer.

The LVR Cycles verdict

A complete time trial bike, wireless and fitted with a power meter, in a very successful deep red. We recommend it to strong riders who want to manage their effort to the watt.

Pros
+ Cockpit with no derailleur cables
+ Power meter to pace your time trial
+ Elegant serpentine red

Cons
- Size S crank length not listed
- Sensitive to crosswinds

Why buy from LVR Cycles? In Béziers, we set up your time trial position, pair the power meter with your bike computer and maintain your AXS groupset throughout the season.

Please note that the specifications may be changed without prior notice by the manufacturer, based on the availability of components and other factors.

Reference TRK-5347586

Data sheet