CURTIS XR650£2,530 (polished frame & shock)/ £5,600 (complete bike)

Bikes created by Brian and Gary from Curtis are practically works of art, and so rare that Gary had to send in his own XR650 for us to test. Flawless fillet-brazed construction honed by making bombproof motocross and BMX bikes makes for high demand and a wait if you want one. Custom geometry means you can have one in any shape, but do the T45 tubing and simple suspension set-up provide the baseline for a brilliant bike?