KSPEED Kawasaki Ultra 300/310 Supercharger Pulley

Made from lightweight aircraft grade billet alloy.

Excellent upgrade for all 300/310 Jet Skis, reflash needed to take full advantage

109mm pulley can go on any ski, and is a cheaper replacement option than genuine. Slight boost increase.

108mm pulley is race spec. You MUST run fresh (2months old MAX) 98octane fuel with this pulley. It will also come with a new idler to reduce belt slack. More significant boost increase.

NOTE: 108mm pulley is for RACE skis only. 109mm pulley can be run on all 300/310 skis.