Cylinder Tomos 4L / APN-4 50cc (38mm) with pin 10 piston cast iron

Cylinder Tomos 4L / APN-4 50cc (38mm) with pin 10 piston

• Piston pin 10!
  
• Cast iron 
  
• 10mm inlet diameter
• Replica as original, square model
• With piston, piston rings, piston pin (10mm pen), piston pin clips and gasket set!

Note: 

• Cylinder doesn't fit the first Tomos 4L models (1969 - 1971) those had the round cylinder like the 2L and 3L 

Before mounting

• We always recommend thoroughly inspecting and cleaning the cylinder before installation and slightly smoothing the ports in the cylinder with 1000-grit sandpaper to remove sharp edges. This significantly extends the lifespan of the cylinder/piston. You can also refine or optimize it with a file or a multi-tool (Dremel) for even better performance.