I think you're half right; the NDS of the GXP axle is 22mm rather than 24mm like a HT2 axle.
@pifko started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
I think you're half right; the NDS of the GXP axle is 22mm rather than 24mm like a HT2 axle.