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CP Pistons Honda TRX 450R ATV Piston Kits Standard Bore, Big Bore and
High Compression

CP Pistons, for those that demand the
ultimate in engine performance!
High performance and racing Honda piston kits are available from CP
Pistons for all model years of the TRX450R four stroke ATV's. Standard bore size and big
bore TRX450R CP Pistons as well as high compression TRX450R Honda ATV piston 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 including:
| Team Suzuki |
Ricky Carmichael |
Ivan Tedesco |
Ryan Dungey |
| MDK Speed |
David Vuillemin |
Nick Wey |
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| MDK/Lucas Oil/Yamaha |
White Bros. Yamaha |
Rick Ware Racing |
Team Solitaire |

| Standard Features included with each Honda
TRX 450R CP 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
include:
Piston
Piston Pin
Piston Rings
Pin Locks
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, along with the individual piston kit info.
Click on the part number
in the table below for pricing or to order the piston and, or head gasket of your choice.
2004 - 2005 Honda TRX450R CP Piston Kit
Stock Bore size is 94mm (3.701") Stock Stroke is 64.8mm
(2.551") |
| Part # |
Bore Size |
Cubic
Centimeters |
Compression |
Top End Gasket Kit # |
Installation
Notes |
| cp m2021 |
94mm std. |
450 cc |
11.0-1 |
cp c7199 |
deglaze cylinder |
| cp m2035 |
94mm std. |
450 cc |
12.0-1 |
cp c7199 |
deglaze cylinder |
| cp m2017 |
94mm std. |
450cc |
13.0-1 |
cp c7199 |
deglaze cylinder |
| cp m2022 |
95mm +1mm |
459cc |
11.0-1 |
cp c7199 |
bore and replate cylinder |
| cp m2018 |
95mm +1mm |
459cc |
13.0-1 |
cp c7199 |
bore and replate cylinder |
| cp m2023 |
96mm +2mm |
469cc |
11.0-1 |
cp c7201 |
bore and replate cylinder |
| cp m2019 |
96mm +2mm |
469cc |
13.0-1 |
cp c7201 |
bore and replate cylinder |
| cp m2024 |
98mm +4mm |
489cc |
11.0-1 |
cp
c3044 |
requires sleeve or cylinder |
| cp m2020 |
98mm +4mm |
489cc |
13.0-1 |
cp
c3044 |
requires sleeve or cylinder |
2004-2005 TRX450R PISTON FULL RACE
Stock Bore size is 94mm (3.701") Stock Stroke is 64.8mm (2.551")
Full
race model pistons are custom forged pistons but available off the shelf. These are
single ring, high
compression, lightweight pistons which feature a highly efficient dome design that
maximizes squish
without compromising performance. Lateral gasports are added to maximize ring seal while a
skirt
coating is included to provide additional lubrication, minimizing friction in extreme
conditions. The full race
pistons come complete with high performance rings, lightweight pins and locks. |
| cp m2025 |
94mm std. |
450 cc |
13.5-1 |
cp c7199 |
deglaze cylinder |
2006 - 2008 Honda TRX450R CP Piston Kit
Stock Bore size is 96mm (3.780") Stock Stroke is 62mm (2.441") |
| cp m2036 |
96mm std. |
449cc |
12.5-1 |
cp
c3139est |
deglaze cylinder |
| cp m2037 |
96mm std. |
449cc |
13-1 |
cp
c3139est |
deglaze cylinder |
| cp m2038 |
98mm +2mm |
468cc |
12.5-1 |
cp
c3141est |
bore and replate cylinder |
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