POLINI Vespa Carburettor Main Jet Kit (SI 20.15-17 A-D/20.20-26.26E/G/H) VESPA HELMET Runner 50 SP 2010-2017

Runner 50 SP 2010-2017

Without carburettor

T5 (Up To 2001)

the new parts from VRH fit all conventional 177cc cylinders

Piaggio Engine Swinging Arm Spacer Shaft  Runner FX

POLINI Vespa Carburettor Main Jet Kit (SI 20.15-17 A-D/20.20-26.26E/G/H) VESPA HELMET Runner 50 SP 2010-2017POLINI Vespa Carburettor Main Jet Kit (SI 20. 15 17 A D 20. 20 26. 26E G H) The main jet is found at the bottom of the jet stack on the SI Carburettor. The main jet is responsible for regulating the amount of fuel available for premixing. From changing the exhaust to changing the cylinder it is necessary changing the main jet to suit the scooter. The Polini Main jets are precisely made and can be used for a variety of different SI Carburettors. Comes