New Trek Speed Concept

Yeah, was the way I went. That said whilst both ways in theory had the same ETA at time of ordering, (off the shelf 20 December, Proj One 1 Jan), my bike actually arrived mid March. So if you’re in Northern Hemisphere and looking for a bike for this year, I suspect that a Project One is unlikely.

Seeing as this thread has been brought back, question from me - has anyone swapped the bite valve on the front aero bottle? I’m really struggling with it still. I get that I need to really pull it to get to the ‘open’ but that’s hard to do one handed. Equally then closing it isn’t 100% reliable, so I find I spend too much time trying to suck through a closed valve and cycling along with my water dripping out the tube that’s stayed open. I was just going to try a camelbak bite valve as I use for my MTB backpack on the normal hose/straw.

I have to agree with @Duncan74 re the sizing.
You didn’t mention how tall you are, or what your inseam is, so we can all only -sort of- speculate.
I’m 178cm with a 32” inseam, and have a fairly long reach. After test riding a large, I ordered a medium with the far tower toppers. Fits me great, love the ride! The large felt not quite “agile” enough to me, the medium rides much more nimble (way more to my liking).
I would totally have fit both sizes however.
Can only recommend to test ride both sizes before you invest 10k per some internet recommendations.

To your question about tower hole spacing…
13.5cm / 135mm center to center

Thank you for the replies guys!!

Fair point on height! 180cm tall, 74.7cm saddle height (not sure on inseem off the top of my head). Agree thinking of a session with bike fitter on a rig to check options

Probably missed aswell that my plan is to fit Deda Jet extensions so the reach adjustment will be different to the standard cockpit.

I don’t suppose anyone with a size M or L could provide a measurement from BB to the rear stacker hole in the base bar (to allow comparison to current frame)?

I can.
(I have access to both, a medium, and a large frame.)
But keep in mind - the distance between BB and the rear mounting hole for the towers varies with the basebar option you pick. A low-rise basebar will be closer to the BB than the mid- or high-rise version. (The reach measurement should be within a few millimeters on all basebar options tho.)
I can take measurements later, if you’d like.

How are you looking to mount those? The Speed Concept uses M5x15mm bolts to mount the bars, the deda jet M6x20. Not saying you can’t manage to get it to fit, but just be aware of the forces and suitability of that swap.

jet2.pdf
TK_SpeedConcept_MY22_ServiceManual_2-2023.pdf (page 12)
Trek 2022 Speed Concept Aero Extension Bolt - Trek Bikes (NZ)

Do you happen to know your saddle height, and your reach number (to back, or centre of pad)?
Thx!

That would be great David - thanks!

Duncan - I have the wattshop risers so plan to use them on the basebar and attach (use these currently on Trinity)

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71mm on the medium


74mm on the large
The medium has the low-rise basebar, the large has the TT version basebar (that is 5mm lower than the std low-rise bar)

Again - These numbers are not a good indicator for a reach measurement.

Same regarding the sizing. I am 178 cm as well with an 83 cm (33 inch) inseam and was really torn on sizing. I ended up buying a medium and a large and decided to keep the large. Much more comfortable over the long haul and I preferred my position on it over the medium. I was at max reach in the medium and didn’t like how it handled or how it looked with the large drop from aero extension to mid rise base bar.

Also really glad to see this thread revived. We need to push Trek for an adapter to easily allow us to use other bars :joy:

He’s looking for the horizontal measure bb to rear tower bolt.

Yes, that makes much more sense.
Not sure if I’d be able to provide these accurately.

Not sure if I’d be able to provide these accurately.
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A relatively simple method for that measurement is to place the bike with the back tire near a wall. Measure from the wall to the rear tower bolt. Then, measure from the wall to the BB. Subtract the two and you now have the horizontal distance from the rear tower bolt to the BB.

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Thanks David - yeah if you would mind having a stab at the horizontal measurements that would be great, don’t worry just trying to use it as a guide as to which size is “prime” option, will ultimately check on a bike (when I find a shop with them in stock in UK!!)

Ok, please do not try to sue me if you decide to base fully on this info, but…
On my large, it’s 499mm. This was measured from the back of the tower (not bolt) and the centre of the BB axle on my Large size. Noting the stack/reach dimensions are on the trek website, then you can calculate the medium as the bars / ‘stem’ are the same.

Oh, and this was on my high (upsweep) base bar and mid topper. Dont think the upsweep base changes the reach although perhaps it does shorten it a tiny bit.

@DaeTT

Ok, I did the measurements on both bikes.
Placed them with the rear wheel against a wall, leveled them out, and measured wall → center bb, and wall → center of rear tower bolt

Medium: 74.1/123.8 - 497mm
Large: 74.3/125.5 - 512mm

The small difference in the wall to BB measurement is because of the different tires that are mounted.

Hope that helps!

P.S.
Keep in mind - the large I was measuring off had the TT basebar mounted. I don’t know if that one has the same reach measurements than the SLR basebar. (Probably within a few Millimeters.)

I measured with a laser distance tool. I reckon we align to the degree of accuracy expected/needed (note Mine was to back of tower, not to tower bolt, hence the 13mm difference).

Thanks for the measurements guys, suggests medium is closest to current fit