275 enduro pro4 boost mtb front wheel 15x110 conventional spoked endurotrail wheels built with hopes own tech enduro rim built with pro 4 hubs in standard spokes wheels machine built and hand finished in barnoldswick triple cavity construction offers excellent strength yet keeps the weight low tubeless compatible requires tape and valves specification rim 23mm internal 28mm external width welded and eyeleted 6061 t6 aluminium rim 110x15mm boost specific hub