Polini 70cc Big Bore Cylinder Kit (Cast Iron) 47mm for 50cc 2-Stroke Air-Cooled Minarelli Based Scooters INCLUDES: 47mm Cylinder Block Billet Head Piston Piston Rings 10mm Wrist Pin Circlips Gaskets Spark Plug COMPATIBILITY: Adly – Bulls Eye 50 2T, Jet 50 2T, Thunder Bike 50 2T, Fox 50 2T, Panther 50 2T Aprilia – Gulliver 50 2T, Rally 50 2T, Scarabeo 50 2T, Sonic 50 2T, SR mod. ’94-96, SR WWW 50 2T Atala – Carosello 50 2T Benelli – 491 GT-ST 50 2T, K2 50 2T, Naked 50 2T, Pepe 50 2T ’04 Beta – Ark 50 2T, Chrono 50 2T, Quadra 50 2T, Tempo 50 2T BSV – Ax 50 2T, Jx-Gz 50 2T CPI – Hussar 50 2T ’02, Popcorn 50 2T ’02 Kreidler – Easy Rider 50 2T KTM – K 50 2T Malaguti – F10 50 2T, F12 Phantom 50 2T ’00 A/C, F15 Firefox 50 2T A/C, Yesterday 50 2T, Ciak 50 2T, Centro SL 50 2T MBK – Equalis, Evolis, Fizz, Flipper, Forte, Hot Champ, Mach G, Ovetto 50, Sorriso ’96 Motron – Sting 50 2T, Syncro 50 2T, Thunder 50 2T PGO – Big Max 50 2T Yamaha – Axis 50 2T, Breeze 50 2T, Jog R 50 2T, Jog-Jog Z, Neo’s 50 2T, Why 50 2T, Ye Zest 50 2T, Vino 50 2T, Zuma 50 2T ’02-08 Don’t forget to properly break in your big bore kit. For break in, we recommend 200-300 mile before running your bike full throttle for any extensive length of time. *This kit will has a 10mm wrist pin. Please confirm your model before purchase.* **