- Bore (diameter) : 44mm
- Stroke : 43.6mm
- Displacement : 66.3cc
- Compression ratio : 12.01
- Material : aluminium alloy with a high proportion of hardened and tempered silicon, cylinder liner with silicon carbide coating in an electroplated nickel matrix and cross-smoothing
- Installation clearance / tolerance : 0.05mm
- Improved heat exchange surfaces.
- YAMAHA AEROX 4 50 ie 4T LC Euro4 2018- (A333E)
- YAMAHA NEO'S 4 50 ie 4T LC Euro4 2019-
To be installed exclusively with Force Master control unit M.5518429 for the vehicle models:
- MBK NITRO 50 ie 4T LC Euro2
- MBK OVETTO UBS 50 ie 4T LC Euro2
- YAMAHA AEROX 4 50 ie 4T LC Euro2 (A326E)
- YAMAHA C3 [XF] 50 ie 4T LC Euro2 (A311E)
- YAMAHA GIGGLE [XF] 50 ie 4T LC Euro2 (A311E)
- YAMAHA NEO'S 4 50 ie 4T LC Euro2 (A316E)
- YAMAHA VOX [XF] 50 ie 4T LC Euro2 (A311E)
- YAMAHA ZUMA FX 50 ie 4T LC
