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.
* THESE ARE OCCASIONALLY ORDER IN ITEMS, WE WILL NOTIFY YOU OF STOCK AFTER YOUR ORDER *