High performance and racing Honda piston kits are available from CP Pistons for all model years of the TRX300EX four stroke ATV's. Standard bore size and big bore TRX 300EX CP Pistons Honda ATV's kits are all available here. These forged pistons will work with oversize valves as well as high lift camshafts as they include oversize valve reliefs. They incorporate a "X" style forging for greater strength, durability and reduced weight. Along with the full radius dome designs, high performance piston rings and lightweight piston pins, these pistons offer the highest quality and are engineered for maximum power output.
CP Pistons racing pistons are used by top professional riders and teams.
|Standard Features included with each CP Pistons Honda TRX 300 Piston Kit:|
|Double forced pin oilers||Fully CNC Machined|
|Accumulator groove||Pick lock removal grooves|
|Anti detonation grooves||X-style forging|
|Light weight pins||Balanced to + or - 1 gram|
Each of the below kits
Cometic top end gasket sets are available separately, but are not included with the piston kit. The matching top end gasket kit for each application is listed in the table below, when available, along with the individual piston kit info.
|CP Pistons 1992 - 2009 Honda TRX 300 EX Piston Kits
Stock Bore size is 74mm (2.913") Stock Stroke is 65.5mm (2.579")
|Piston #||Bore Size||Cubic
|Compression||Top End Gasket Kit #||Installation
|74mm std.||282 cc||11.5-1||cp c7143est||deglaze cylinder|
|cp m2040||75mm +1mm
|289 cc||11.5-1||cp c7143est||bore and hone|
|cp m2041||76mm +2mm
|297cc||11.5-1||cp c7906est||bore and hone|
The piston and gaskets listed on this page fit the following model year TRX 300EX quads:
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 TRX300EX Honda ATV