Race Ported Zenoah 4 Bolt Top Ends and Upgrade Kits
Powdercoated cylinders are now available. Click here for more info
Race Ported G270RC 25.4cc Top End $99
Race Ported G270RC 25.4cc Top End With Decked Cylinder $129
Race Ported G270RC 25.4cc Top End With Lightened Piston $119
Race Ported G270RC Top End With Lightened Piston And Decked Cylinder $139
Race Ported 27.2cc 4 Bolt Top End $119
Race Ported 27.2cc 4 Bolt Upgrade Kit $159
Race Ported 27.2cc 4 Bolt Top End With Lightened Piston $139
Race Ported 27.2cc 4 Bolt Upgrade Kit With Lightened Piston $179
Race Ported 28.5cc 36mm 4 Bolt Top End $119
Race Ported 28.5cc 36mm 4 Bolt Top End With Decked Cylinder $139
Race Ported 28.5cc 36mm 4 Bolt Top End With Lightened Piston $139
Race Ported 28.5cc 36mm 4 Bolt Top End With Decked Cylinder And Lightened Piston $149
Machined and Race Ported 30.5cc 4 Bolt Top End $139
Machined and Race Ported 30.5cc 4 Bolt Upgrade Kit With 2mm Stuffed Crank $174
Machined and Race Ported 30.5cc 4 Bolt Top End With Lightened Piston $159
Machined and Race Ported 30.5cc 4 Bolt Upgrade Kit With 2mm Stuffed Crank And Lightened Piston $194