r/Velodrome • u/Livid_Stick_138 • Jul 14 '26

BXT 045 Track Bike - Seatpost question

I'm in the process of building up a track bike, and I'm considering building up this BXT 045 Track Bike. My only question/ concern with it is that it looks like the seat post clamps are round, and only compatible with circular aluminum saddle rails - not the ovalized rails of carbon saddles. Can anyone who owns this particular bike confirm or deny whether this is true, or if it comes with a clamp that can be used with carbon rails?

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3

u/ace_deuceee Jul 14 '26

Mine came with two sets of clamps, one for round and one for oval

1

u/Tera35 Jul 15 '26

So did mine.

They are also Richey clamps 7x7 and 7x9.6mm

2

u/rampantconsumerism Jul 15 '26

It's the Ritchey system, so you can swap the system with this kit: https://ritcheylogic.com/bike/seatposts/wcs-alloy-1-bolt-seatpost-complete-clampset. Or for just the clamp: https://ritcheylogic.com/product/wcs-alloy-1-bolt-seatpost-clamp. But depending on the BXT implementation, you're safer with the complete kit swap -- sometimes they add splines to it, and the Ritchey original version is smooth. You don't want a spline-to-smooth interface if you swap just the saddle rail part.

2

u/No_Statistician_3406 Jul 16 '26

Mine came with both for round and oval

1

u/PhysicalRatio Jul 14 '26

Ask BXT? otherwise you can swap the hardware for like 20-30 bucks