Cylinder Kit Bidalot RF50WR Racing V2 Derbi Euro 3 / Euro 4

We are always looking for more power, more performance and more speed, and tuning expert Bidalot from France is definitely one of our go-to manufacturers when it comes to high-quality, extremely powerful racing products. The Cylinder Kit Bidalot RF50WR Racing V2 Derbi Euro 3 / Euro 4 is another milestone in high-end 2-stroke tuning.

The Bidalot RF50WR racing kit is a powerhouse inspired by and developed for racing, and has been successfully tested on international racetracks. The name RF-WR (WR = world record) refers to the 2018 world speed record on Lake Bonneville, USA.

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.

Attention: this high-end tuning cylinder has to be run with other appropriate high-end tuning components (internal rotor ignition, 28 or 30mm carburetor, V-Force reed valve, reinforced clutch); you also need the matching Bidalot crankshaft with 39.7mm stroke and 85mm connecting rod (original = 90mm).

If you don’t want to go all the way, we recommend to use the regular instead of this racing Bidalot RF50WR version (lower compression).

Technical Specifications:

• Nikasil-coated aluminium cylinder
• 5 transfer ports – exhaust with boost ports
• RF50WR Racing Endurance
• piston CNC VHM 40mm
• chrome-plated piston ring, 40x1mm
• 39.7mm stroke - 85mm connecting rod
• flange 28x30mm - 4 screws (hole spacing: 48mm)