Bidalot Cylinder Kit RF50WR Derbi Euro3

The basic tuning but still very powerful version of Bidalot’s high-end Racing RF-WR: Cylinder kit Bidalot 50cc RF-WR Derbi Euro3.

The cylinder was developed for everyday use. Design and internal architecture are identical to the racing version, but port timing and the compression ratio are shifted a bit downwards to make the cylinder suitable for everyday use and to also make it more reliable. Performance and output are impressive, the increase in power is clearly noticeable.

The Nikasil-coated aluminium cylinder has 5 transfer ports and an exhaust plus boost ports. Cylinder bore is 40mm. The cylinder head has a special coating and provides excellent cooling of the self-centering combustion chamber. The piston is made of a very heat-resistant aluminium-silicon alloy for extended service life.

We recommend using a larger carburetor (21mm) and a tuning / sports exhaust to fully exploit the potential of this excellent cylinder. And please use a crankshaft with original stroke and connecting rod!

Technical Specifications:

• Nikasil-coated aluminium cylinder
• 5 transfer ports – exhaust with boost ports
• aluminium-silicon piston, 40mm
• chrome-plated piston ring, 40x1mm
• original stroke and connecting rod
• flange 28x30mm - 4 screws (hole spacing: 48mm)