The Bidalot RF50WR Racing cylinder kit is one of the most advanced 50cc top-end kits on the market for AM6 engines. Built for competition, it combines high compression, water-cooled head and a hypersilicified piston to get every last bit of power from your 2-stroke engine.

The heat-treated aluminium head features a water jacket around the combustion chamber for optimal heat dissipation. It is self-centred in the cylinder and sits 2.4 mm into the bore. The nikasil aluminium cylinder Ø40 mm features 5 transfer ports and a booster exhaust port for optimised filling.

The pack includes:

Heat-treated aluminium cylinder, nikasil coating Ø40 mm
High-compression aluminium head, self-centred, water-cooled
Piston RF50WR hypersilicified Ø40 mm – 2018 elliptical profile, pin height 25 mm
Chrome steel ring Ø40×0.8 mm, barrel-faced, Japanese manufacture
Pin Ø12×33 mm
Base gasket set (multiple thicknesses)
Head O-ring set
4 cylinder studs
Various hardware

Benefits:

📈 Maximum performance thanks to high compression and 5 transfer ports
🌡️ Water-cooled head for sustained high revs without overheating
🎯 Hypersilicified piston with 2018 elliptical profile for tighter clearances and precise response
🔩 Japanese barrel-faced ring for superior sealing and durability
🔧 Complete kit: multi-thickness gaskets, studs and hardware included for a direct fit

Note: this kit requires a racing crankshaft Ø39.7 mm and a 85 mm connecting rod, available in our shop. For AM6 engines only.

Top Performance 50cc Cast Iron Cylinder Kit – AM6

Bidalot RF50WR Racing Cylinder Kit – AM6 50cc

Culasse top performance 85/86cc am6

Kit 50 Metrakit Fonte am6

Kit 50 Metrakit alu Am6

Motoforce Cylinder-Piston Kit – Derbi Euro3 (Senda, Xtrem...

50cc Cylinder Kit Motoforce AM6 – Cast Iron

OPENING HOURS

Need Help?