Mystery Eurocilindro Cylinder 53mm Aftermarket replacement piston for the

Aftermarket replacement piston for the 47mm Polini kit used on the Minarelli v1

Upper mount is 125mm apart

This WILL require case boring to fit onto an e50 or za50

You can also set an overspeed warning so if you hit a certain speed

Don't forget to slap your tank when you fill up

Mystery Eurocilindro Cylinder 53mm Aftermarket replacement piston for theSweet hacker special. Maybe you know what this is truly for? Here's what we do know. It slides right onto a piston port Derbi and a 44mm piston fits like a glove. Stud pattern is 46x46mm. Intake stud holes are 45mm on center. Exhaust studs are 50mm on center. From top of cylinder to bottom of the exhaust is ~43. 5mm Cylinder skirt has an outer diameter of 49mm. This is just a cylinder. No pistons or gaskets etc. No returns, sorry.