Phil Wood snow hubs are offered in disc (ISO) only. Standard spoke hole counts are 32 and 36 (other spoke hole count options are available upon inquiry as an upgrade). Standard flange height is 94mm / 3.7". All snow hubs are offered as quick-release, though they can be converted to a bolt-on hub as an upgrade. Front hubs are 135mm spacing for both front and rear disc brake specific-forks (please specify at the time of order). Rear hubs are available in 170 and 175mm spacing (other spacing options are available upon inquiry as an upgrade).
Both the front and rear hubs can be ordered with the SLR (weight saving cut outs in the flange and disc rotor mounting surface) as an upgrade.