Top offer! PSR cylinder kit 70cc / 45mm.

Finally a cylinder kit that is almost plug and play! A datasheet with all information needed for installation and tuning is included!

• PSR cylinder 70cc
• Cylindersleeve outer diameter: 48mm 
• 70cc HD head
• Piston complete (piston pin 12mm)
• Gaskets set
• 17,5mm Dellorto imitation-carburetor (very high quality!)
• 16-21mm manifold
• Airfilter 45° black
• 3 Dellorto replica jets for perfect adjustment. (76-78-80)

This set is tested by us with a RS Cigar exhaust(speed) And this set is tested by us with a Jamarcol exhaust (torque) Our advise is to use a gear ratio of 15-45 or 16-45. The NGK B9HS spark plug fits the best with this set!

Pay attention!

The float box of the carburettor is fixed with 4 bolts, 3 long and 1 short. Always ensure that you always place the short bolt on the corner of the air adjustment screw! If you screw in a long bolt here, it will hit the air adjustment screw and block it!

We always advise to check and clean the cylinder before installation and to finish the ports in the cylinder with a 1000 grit sandpaper. This way the edges are no longer too sharp because of the Nicasil coating, this will considerably extend the life of the cylinder / piston.