Prima CVK Main Jet Kit (5mm, 10 pieces); GY6 150 ligero 1000 RPM Torque Spring: high-tension

1000 RPM Torque Spring:  high-tension compression spring eliminates belt slip and provides consistent back-shifting during hill climbs

uses the same holes and bolts as your grab rail

Piaggio MP3 250 (2007–2010)

Don't forget to rejet your carb

Designed specifically for the Honda GET (AF58E) liquid-cooled 50cc 4-stroke engine:

Prima CVK Main Jet Kit (5mm, 10 pieces); GY6 150 ligero 1000 RPM Torque Spring: high-tensionPrima's 5mm main jet kit for GY6 and CN250 CVK carbs includes jets in 10 different sizes: #100, #105, #108, #110, #113, #115, #120, #125, #130 and #140. Jetting is something that takes trial and error. See our blog of jetting instructions for more info. Original Parts For Scooters SKU 114 38 45 Specifications: Keihin round style main jet Thread size: M5x0. 80 Overall Length: 8mm Packaging may vary from product photos Compatibility: 157QMJ based 125cc