Supplement box of reeds Derbi euro 2 / 3 / 4 5mm KRM

Supplement 5mm reeds box for Derbi from manufacturer KRM

The supplement can be installed with any reeds box and the installation is very easy. You just have to disassemble the reeds box and place the supplement between the crankcase and the reeds box.

The supplement increases the volume of the engine crankcase by about 5cm3, which in turn increases the performance especially at high RPM.