There are no specs on my front thru axle either.

I asked SP Cycle and they said it's a 'special axle'

Welcome to the forum and good luck with your build! Mechanical shouldn’t be an issue. The bottom bracket area is quite tight but still enough space to run all the cables. If you are running separate bar and stem and use the headset cover that comes with the frame routing the cables through the headset shouldn’t be too difficult either.

Thanks.
I'm looking forward to it now. Good to know that it's doable and tbh I think a separate stem and handlebar in combination with the headset cover is likely going to be the end result. We will see.

1st post but joined this forum looking for a more 'budget friendly' frame that I won't see on my regular club rides and will be suitable for cruising around the Chilterns in the UK.

After the feedback on here decided to get this frame.

My frame apparently departed 3 days ago, so should be in my hands soon, likely next week, with any luck.

Planned build:

R088 size large UD Glossy (liked this look a lot on others builds)

Ultegra R8020 shifters and R8070 brakes
GRX 812 derailleur
CSM8000 Cassette (11-42)
Dura Ace 9100 Crankset 
Pass Quest 1x chain ring

Have all of the groupset parts together now.

for wheels I am thinking of these:

https://www.xmcarbonspeed.cc/products/t1100-carbon-spokes-700c-tubeless-26mm-internal-wide-disc-brake-road-gravel-bike-carbon-wheelsets-with-20-20h-straight-through-version-hubs

Need payday to arrive before I bite the bullet on them.

Finishing kit wise need to see whether I want to run the elita one SL8 bars (which are in customs) or a separate stem/bars like I do on my other bikes.

Hoping once built that this is a fairly lightweight 'all rounder' type ride.

Not seen anyone build this frame with mechanical yet, so hoping that the one extra cable to route through the frame/bars is not too much of a ball ache.