These one-piece SIP aluminium rims hav a noticably better concentricity (roundness!) thanks to being made from billet aluminium and machined rather than being cast. The ride is much more stable and smoother, with far less vibration and with the double-hump bead, this means you do not have the sudden loss of air even with a bad puncture.
 
250 x Ø 10" WIDE wheel rim, in matt black paint with pre assembled valve.
 
Suitable for the CASA Octopus design rear hubs (with 8 stud pattern, although 4 can be blanked off to use with a standard hub)