The valving recommendations are based on testing and are aimed at centering in the adjustment range

The lower spring rate gives a lighter lever action

For those really epic

multi-surface tread

it works with a standard HG freehub body and a normal 8-speed chain

Topeak Joe Blow Mountain X Floor Pump Needs Images The valving recommendations are basedThe Topeak Joe Blow Mountain X Floor Pump is a mountain bike specific pump that claims to inflate tyres tubes 50% faster than your standard bike pump. Who's this item for: Riders who only have MTB's in their fleet and don't want to waste precious trail time pumping up their tyres. Materials: The barrel and base are made from painted steel. The handle is oversized and padded for comfort. Gauge type: 3" analogue gauge. Gauge location: Middle mounted to