Can also be fitted on front/rear on Zero 9 / Dragon X9 / Bexley 9 as entry-level tyre, although usually on these models an uplift to 8.5x3 tyres is undertaken.
Internal diameter 134mm (~5.27 inches). Width at bead: 47mm.
Typically accompanied with 50-134 tubes, 90 degree bent valve on motor wheel and 45 degree on non-motor wheel.