CP Pistons Yamaha YZ 450F Dirt Bike Piston Kits Standard Bore, Big Bore
and High Compression

CP Pistons, for those that demand the
ultimate in engine performance!
High performance and racing Yamaha piston kits are available from CP
Pistons for all model years of the YZ450F four stroke dirt bikes. Standard bore size and
big bore 468cc YZ450F CP Pistons Yamaha dirt bike 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 dirt bike 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 |
|
| MDK/Lucas Oil/Yamaha |
White Bros. Yamaha |
Rick Ware Racing |
Team Solitaire |

| Standard Features included with each Yamaha YZ450F
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.
| 2003 - 2006 Yamaha YZ450F CP Piston Kit Stock
Bore size is 95mm (3.740") Stock Stroke is 63.4mm (2.496") |
| Part # |
Bore Size |
Cubic
Centimeters |
Compression |
Top End Gasket Kit # |
Installation
Notes |
| cp m1010 |
95mm std. |
450 cc |
13.0-1 |
cp c7947 |
deglaze cylinder |
| cp m1011 |
95mm std. |
450 cc |
13.5-1 |
cp c7947 |
deglaze cylinder |
| cp m1030 |
97mm +2mm |
468cc |
13.0-1 |
cp c3064 |
bore and replate cylinder |
| cp m1031 |
97mm +2mm |
468cc |
13.5-1 |
cp c3064 |
bore and replate cylinder |
|