Cylinder kit ATHENA 70cc Big Bore d=45mm, KB=12mm, Zündapp 4M/5M 50cc

Athena Big Bore cylinder kits guarantee an increase in power and combine performance with durability.
Fan-cooled Athena aluminum 70cc kit with nickel-carbide-silicon coating for high durability and low friction, with up to 12 hp possible depending on tuning. Top quality with excellent workmanship. A complete gasket set is included in the scope of delivery.

For 91mm connecting rod (long connecting rod from approximately the 1969 production year)

Manifold connection: 32mm

Intake manifold hole spacing approximately 40mm

The article is suitable for the following vehicles, among others: Zündapp: C 50 Super Type 441, C 50 Sport Type 517, R 50; slight adaptation work may be required; Sport, Combinette, Super Combinette, etc.
A 70cc cylinder head must be fitted (not included in the scope of delivery)!
Scope of delivery as shown in the product picture.