ITALKIT 74cc Ø48mm aluminum top-end kit for DERBI Variant Start, Start 5

Warning, top end of engine reserved for competition on circuit, closed road.

Finally available from us, here is the ITALKIT top-end kit for DERBI VARIANT START, START 5... With some modifications, it can also be fitted to BYE BIKE or PEUGEOT 103 (modification of the bolt pattern for the latter)! The latest core is highly refined, cast in Italy GILARDONI unlike competitors like BRK or METRAKIT! It features a huge exhaust port with boosters, 6 intake ports, a 48mm piston, and a high-compression cylinder head with an interchangeable stud mounted on an O-ring. This is clearly a very powerful racing top-end kit! An excellent base for engine tuning! Pair it with a good exhaust, a minimum 19mm carburetor, and a high-revving exhaust system...

As an option, we offer a Stage 1 preparation. This preparation involves modifying the exhaust port by increasing the port timing and improving the flow, thus increasing cylinder performance. Skirt modifications are also included in this service. Please allow a little extra time for this preparation.

These engines can also be fitted to BYE BYKE or PEUGEOT 103 with an adaptation!