PISTON KIT 01-06 POLARIS 50, NAMURA NA-50008-4

Part No. 56-W908.050.NT (oro2u.com)
Polaris 50 Predator/Scrambler 2001-2006,
Namura piston kit NA-50008-4
THE Yamaha 3KJ JOG Minarelli  (1PE40QMB 1E40QMB) (QJ50) 50cc 2-Stroke engine. THIS has a displacement of 49.8cc. The bore size is 40mm with a stroke of 39.2mm.

These popular 2T Minarelli engines is found on many scooters, quads, ATVs, and mopeds including THE FOLLOWING.
Adly Fox 50 Adly Hammerhead 50 Adly Noble 50 Adly Thunderbike 50 BKM XENON 50cc Eton Beemer Matrix 50

Keeway F-CT 50 Keeway Hurricane 50cc Keeway Matrix 50 Keeway RY8 50 Linhai PowerMax 50 MZ Moskito 50 PGO Genuine Black Cat 50cc PGO -Genuine Buddy 50cc PGO G-Max 50