The naraku 70cc cylinder head for benelli 491 50 lc 1998-2003 is part of the latest collection from naraku.Features: aluminum cylinder head with large combustion chamber suitable for minarelli lc 70cc cylinder kit by naraku part number: nk102.76 , Also suitable for other 70cc cylinders with 47mm bore the larger combustion chamber will solve the electric start issues due to the higher compression on the bore kits specifications: material: aluminum product name: cylinder head units: each to fit: adly herkules air tec 1 2010 european models adly herkules air tec 1 2011 european models aprilia area 51 50 1998 european models aprilia area 51 50 1999 european models aprilia area 51 50 2000 european models aprilia area 51 50 2001 european models aprilia area 51 50 2002 european models aprilia gulliver 50 lc 1996 european models aprilia gulliver 50 lc 1997 european models aprilia gulliver 50 lc 1998 european models aprilia rall modelsy 50 lc 1996 european models aprilia rall modelsy 50 lc 1997 european models aprilia rall modelsy 50 lc 1998 european models aprilia rall modelsy 50 lc 1999 european models aprilia sonic 50 lc 2001 european models aprilia sonic 50 lc 2002 european models aprilia sonic 50 lc 2003 european models aprilia sonic 50 lc 2004 european models aprilia sonic 50 lc 2005 european models aprilia sonic 50 lc 2006 european models aprilia sonic 50 lc 2007 european models aprilia sonic 50 lc 2008 european models aprilia sr 50 lc 1994 minarelli horizontal cylinder eur...