Prima SI Main Jet Kit (10 PCS); Vintage Vespa, Stella 2T

Are you dialing in your scooter to accomodate for that new air filter, exhaust, cylinder kit, elevation or season change? Save yourself some of the headache during the trial and error process by picking up one of our jetting kits!This kit is specifically designed for the SI carburetors on vintage Vespas and Stella 2T, and it provides a solid range to do your plug chops with.The kit includes the following SI jets:96 98 100 103 118 120 122 125 130 135 Jetting is something that takes trial and error. See our blog of jetting instructions for more info.