Cylinder Kit Bidalot Racing Factory WR 90cc Minarelli AM6

cylinder Bidalot Racing Factory WR 90cc Minarelli AM6Bidalot, the French tuning specialists, are all about pushing limits — and their latest creation, the Bidalot Racing Factory WR 90cc kit for Minarelli AM6 engines, is built for pure performance at the highest level.

The RF-WR series was developed for high speed and maximum launch performance. This kit isn’t just hype — it helped set two world speed records at the Bonneville Salt Flats (USA) in 2016.

Cylinder design Bidalot Racing Factory WR 90ccThis upgraded version features a larger 50.5mm bore and is fully matched to other high-end race components. The cylinder uses 7 transfer ports, and the split exhaust is boosted by additional porting for extreme flow.

The 3D CNC-machined, two-piece cylinder head is engineered for optimal cooling under all conditions and is made entirely from high-grade 7075 aluminum. The water jacket is black anodized with a machined Bidalot logo — clean, aggressive, and efficient. There’s also a standard M10x1.00 port for a temperature sensor, or it can be closed off with the included plug.

This cylinder is designed for a 4-bolt exhaust flange (Ø28x30mm), but it also fits standard 2-bolt flanges with 50mm spacing.

Technical specifications Bidalot Racing Factory WR 90cc Minarelli AM6Nikasil-coated aluminum cylinder7 transfer ports, bridged exhaust with boost portsHypereutectic piston d=50.5mm50.5x1mm piston ring13x17x17.5mm small end bearing44.9mm stroke with 90mm connecting rod