Cylinder Zundapp Supertherm, 45mm,ST1 - Ported and machined by Tiveden engine, 11+hp

Zundapp superthermcylinder ST1 porting developed in collaboration between Tivedens motor, Mopedrenovering.se and NTS. The cylinder has a cast iron core, drillable to 46mm with split exhaust port and is ported by Tivedens Motor. Supplied with 45mm NTS piston. Fits all exhaust systems on the market. Delivers 11+ hp at about 8500 rpm and has a torque of 9+ Nm at about 8000 Rpm depending on the exhaust system and setup. Exhaust duration : 41,8 strokes 176° 44 strokes 184°