Madison 4T 250cc
A performance enhanced 200cc VESPA motor with a tuning cylinder or at least an expansion chamber exhaust system could also benefit from a taller primary drive gear ratio
Vespa PX125 T5 Mk1 Classic Gearbox Multiple Gear Cluster 12-13-17-21 68 Tooth - Piaggio
has not been moved for a long time
Chapter 5: Wheels
POLINI PWK BGM CP Keihin Carburettor Main Jet Set Pack Sizes 160-178 Toolbox Madison 4T 250ccPOLINI PWK BGM CP Keihin Carburettor Main Jet Set Pack Sizes 160 178 A jetting kit for the POLINI CP, Keihin, PWK, BGM and Stage 6 carburettors, The kit includes 10 main jets, with evenly ascending values (2 sizes) and 5 idle jets, also with even numbered values. Main nozzle set with M6 thread and high hexagonal head. Keihin Type: Type: 99101 357 Specifically suitable for: Keihin: PWK, CR, FCR, PD, PE, PJ, PWM, VG Polini: CP as well as many other PWK