Polini 166.0076/12r Racing Ø47mm Yamaha/minarelli Cylinder Kit

Polini 166.0076/12r Racing Ø47mm Yamaha/minarelli Cylinder Kit Silver . Unleash peak performance with the Polini 166.0076/12R Racing Cylinder Kit for Yamaha/Minarelli engines. Featuring a robust cast iron cylinder with 6 ports, precisely machined for enhanced performance and optimized wall roughness for superior piston glide. Its advanced port design maximizes compatibility with both original and Polini exhaust systems. The high-silicon alloy piston ensures exceptional heat resistance, complemented by wear-resistant, ground, and lapped rings. The redesigned aluminum cylinder head boasts a high compression ratio and superior thermal exchange. This kit requires a crankshaft with a 12mm piston pin. Circuit use only, not approved for road use. New Polini thermal groups for Yamaha Minarelli engines.Polini Motori presents the new range of kits for Minarelli engines model CY, MY, CW with piston pin increased to Ø 12 mm.This increases the reliability of a part that is subjected to great stress.The cylinder is made of cast iron, with 6 ports.It is machined with special machines to achieve a high level of performance, with sliding walls of controlled roughness for greater cylinder-piston sliding.The diagrams and discharge transfers are specifically designed and manufactured to work in harmony with both the Original silencers and those of the Polini Scooter Team.The piston is made of a special alloy with a high percentage of silicon to guarantee maximum resistance to high temperatures.The high-strength spheroidal cast iron rings are wear-resistant, ground and lapped.The cylinder head is made of a special aluminum alloy with a high coefficient of thermal exchange.Thebustion chamber has beenpletely redesigned for a highpression ratio with high turbulence.Polini thermal groups for Yamaha Minarelli engines must bebined with suitable crankshafts with a Ø 12 mm piston pin.Fits:ADLY:TV 50 - AEON:OBRA 50 - APRILIA:ULLIVER 50 - RALLY 50 - SONIC 50 (CY) - SR 50 2T mod.94, 95, 96 Air - SR 50 2T - SCARABEO 50 2T (Yamaha) - ATALA:AROSELLO 50 - BENELLI:91 50 GT, ST - K2 50 - NAKED 50 - PEPE 50, LX up to 2004 - BETA:RK 50 AIR - QUADRA 50 CHRONO 502 - TEMPO 50 - BSV:X 50 - JX 50 GZ - CPI:USSAR 50 2002 - POPKORN 50 2002 - DINLI:REX DL, 601 50 - KREIDLER:ASY RIDER - KTM:50 - MALAGUTI:ENTRO 50 SL - CIAK 50 - F 10 50 (CY) - F 12 50 PHANTOM 2000 - F 12 50 PHANTOM (phase 2) - F 15 50 FIREFOX (phase 2) - YESTERDAY 50 - MBK:QUALIS 50 - EVOLIS 50 - FIZZ 50 - FLIPPER 50 - FORTE 50 - HOT CHAMP 50 - MACH 50 G - OVETTO 50 - SORRISO 50 96 - MOTRON:TING - SYNCRO - THUNDER - PGO:IG MAX 50 - YAMAHA:XIS 50 - BREEZE 50 - JOG 50 R - JOG 50 Z - NEO´S 50 - VINO 50 - WHY 50 - YE 50 ZEST (CY) Specifications - Homologation:nly for use on the circuit, Not approved - Composition:luminum Compatibility:EON COBRA 50 :AEON, COBRA 50, 50, 2012 - AEON, COBRA 50, 50, 2011 - AEON, COBRA 50, 50, 2010 - AEON, COBRA 50, 50, 2009 - AEON, COBRA 50, 50, 2008 - AEON, COBRA 50, 50, 2007 - AEON, COBRA 50, 50, 2006 - AEON, COBRA 50, 50, 2005 - AEON, COBRA 50, 50, 2004 - AEON, COBRA 50, 50, 2003 - AEON, COBRA 50, 50, 2002 - AEON, COBRA 50, 50, 2001 APRILIA GULLIVER 50 (AIR) :APRILIA, GULLIVER 50 (AIR), 50, 2000 - APRILIA, GULLIVER 50 (AIR), 50, 1999 - APRILIA, GULLIVER 50 (AIR), 50, 1998 - APRILIA, GULLIVER 50 (AIR), 50, 1997 - APRILIA, GULLIVER 50 (AIR), 50, 1996 - APRILIA, GULLIVER 50 (AIR), 50, 1995 - APRILIA, GULLIVER 50 (AIR), 50, 1994 - APRILIA, GULLIVER 50 (AIR), 50, 1993. tradeinn Motardinn