Derbi FDS sparkplug or whatever else you can

or whatever else you can fit inside

A little work sure but the reward of blasting on a vintage and very pretty cylinder should be worth it

Designed for spigot mount Dellorto PHBG carburetors

Polini 45mm 70cc cast iron cylinder kit for the Yamaha Chappy LB50

Pick your size in the drop down menu

Derbi FDS sparkplug or whatever else you canWhat has 4 speeds, pedals, and can go off sweet jumps? The Derbi FDS! Fresh from a barn in Spain and available now in the USA. The Derbi FDS is a very unique and large bike. The seat height is 35 inches so taller riders will feel right at home. This FDS is powered by a 50cc 4 speed, manual clutch, reed valve engine that goes a very moped like 30 mph. For the purists out there, you could leave it as is. If you want more speed, aftermarket exhausts,