C90 Cilinder steel 51mm 101cc. This cilinder has a bore of 51mm and a height of 69mm and can only be used on the new model C90 engines and the Chinese 90cc and 108cc replica engines.

C90 Cilinder steel 52mm 105cc. This cilinder has a bore of 52mm and a height of 69mm and can only be used on the new model C90 engines and the Chinese 90cc and 108cc replica engines.

C90 Cilinder Aluminum 54mm 114cc. This cilinder has a bore of 54mm and a height of 69mm and can only be used on the new model C90 engines and the Chinese 90cc and 108cc replica engines.

Pistonset 70cc -087- 50head standard size. This piston is only suitable for the old style 6-volt engines with the old style 6-volt 50head.

Pistonset 70cc -087- 50head 1st oversize. This piston is only suitable for the old style 6-volt engines with the old style 6-volt 50head.

Pistonset 70cc -087- 50head 2nd oversize. This piston is only suitable for the old style 6-volt engines with the old style 6-volt 50head.

Pistonset 70cc -087- 50head 3th oversize. This piston is only suitable for the old style 6-volt engines with the old style 6-volt 50head.

Piston set for 75cc cilinder CB/CY 52mm. For stock 50 head

Pistonset -GK4- 47mm. For new type Honda engines with the stock 50 head. DAX/Monkey/XR50 etc..

Pistonset -377- 51mm for 50cc stock head. For 6 volt engines with 50cc old style head.