CP Pistons Yamaha YFZ450 Piston Kits Standard Bore, Big Bore and High
Compression YFZ 450 ATV Pistons
Fits 2004 2005 2006 2007 2008 2009 models.
CP Pistons, for those that demand the
ultimate in engine performance!
High performance and racing Yamaha forged piston kits are available from
CP Pistons for all model years of the YFZ450 four stroke ATV's. Standard bore size and big
bore YFZ450 CP Pistons Yamaha ATV 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. We also have high compression YFZ 450 piston kits available.
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.
2004 2005 / 2006 2007 2008 2009 Yamaha YFZ450 CP Pistons YFZ 450 ATV Pistons & Big Bore Kits
The
2006 and newer engines use a slightly longer stroke crankshaft, which is why the engine
ccs
and compression listed below is different than for the 2004-05 engines.
-
Stock Bore size is 95mm (3.740")
-
Stock Stroke 2004-2005 is 62mm (2.440")
-
Stock Stroke 2006-2007-2008 2009 is 63.4mm (2.496")
|
| Bore Size |
ccs |
Compression |
Top End Gasket Kit # |
Installation
Notes |
Piston Part # |
| 95mm std. |
439cc
449cc |
2004-2005 12.5-1
2006 - 2009 12.75-1 |
cp c7479 |
deglaze cylinder |
cp
m1000
|
| 95mm std. |
439cc
449cc |
2004-2005 13.0-1
2006 - 2009 13.25-1 |
cp c7479 |
deglaze cylinder |
cp m1001
|
| 95mm std. |
439cc
449cc |
2004-2005 13.5-1
2006 - 2009 13.75-1 |
cp c7479 |
deglaze cylinder |
cp m1002
|
| 96mm +1mm |
449cc
459cc |
2004-2005 13.0-1
2006 - 2009 13.25-1 |
cp c7479 |
bore and replate cylinder |
cp m1004
|
| 96mm +1mm |
449cc
459cc |
2004-2005 13.5-1
2006 - 2009 13.75-1 |
cp c7479 |
bore and replate cylinder |
cp m1005
|
| 97mm +2mm |
458cc
468cc |
2004-2005 12.5-1
2006 - 2009 12.75-1 |
cp c7502 |
bore and replate cylinder |
cp m1006
|
| 97mm +2mm |
458cc
468cc |
2004-2005 13.0-1
2006 - 2009 13.25-1 |
cp c7502 |
bore and replate cylinder |
cp m1007
|
| 97mm +2mm |
458cc
468cc |
2004-2005 13.5-1
2006 - 2009 13.75-1 |
cp c7502 |
bore and replate cylinder |
cp m1008
|
| 98mm +3mm |
468cc
478cc |
2004-2005 12.5-1
2006 - 2009 12.75-1 |
cp c7502 |
bore and replate cylinder |
cp m1009
|
2004 - 2005/2006-2007-2008 2009 Yamaha YFZ 450 ATV FULL
RACE Pistons
Stock Bore is 95mm (3.740")
Stock Stroke 2004-2005 is 62mm (2.440")
Stock Stroke 2006-2007-2008 2009 is 63.4mm (2.496")
CP Full Race pistons are custom pistons with
shelf stocking part availability. These single ring, high compression, lightweight pistons
feature a highly efficient dome design that maximizes squish without compromising
performance. Lateral gas ports are added to maximize ring seal while skirt coating
provides additional lubrication, minimizing friction in extreme conditions.The Full
Race kits come complete with high performance piston rings, lightweight pins
and locks. |
| 95mm std. |
439cc
449cc |
2004-2005 13.25-1
2006 - 2009 13.5-1 |
cp c7479 |
deglaze cylinder |
cp
m1026
|
CP Pistons racing pistons are
used by top professional riders and teams including:
| Team Suzuki |
Chad Reed |
Mike Alessi |
Ryan Dungey |
| MDK Wonder Warthog |
Heath Voss |
Tyler Bowers |
Eric Sorby |
| MDK/Lucas Oil/Yamaha |
White Bros. Yamaha |
Rick Ware Racing |
Team Solitaire |
The piston and gaskets listed on this page fit the
following model year Yamaha YFZ450 Race Quad:
2004 2005 2006 2007 2008 2009 YFZ 450
  |
Great Deals on other Motocross Parts and Accessories
We hope you will choose to purchase your CP Pistons, Wiseco, Hot Cams and CV4 products from us here at Campbell Enterprises. For the many other parts you need for your dirt bike or quad we recommend the following companies. We hope you find them helpful and that they save you some cash. We figure the more they save you, the more you have to come back and visit us with 
For OEM (Original Equipment Manufacturer) parts we recommend BikeBandit for OEM parts & online schematics  . They have a huge selection of aftermarket parts also.
For riding gear, apparel and accessories Cycle Gear is a good choice.
In addition to those two we also shop at Motorcycle Superstore  and MotoSport.com . If you have the time it is a good idea to check with each of them to compare prices. They all often run special sales, offer free shipping, etc. so you can often save a bit more by checking them all out before making a purchase.
More Fun Stuff and Money Saving Deals
Once in a while we all need (or are forced due to injury) to do something other than play in the dirt. For those times Bass Pro Shops  is a favorite for many of us outdoor types.
On those long trips everyone enjoys good music or a movie and the iTunes Store is a frequent stop.
For those of you that drive an RV to the races or riding area, The Good Sam Club offers Emergency Road Service, and many other helpful plans to take some of the worry out of those long road trips and save you some serious money. They also have a great Extended Service Plan and they want to pay your RV repair bills. 
And for the golfers out there, The Golf Card offers great discounts for green fees, Pro Shop item purchases and more at over 3000 courses nationwide. If you enjoy getting in a few rounds while you are traveling, then this program can really save you a lot of money every year. Get Golf Card today and receive a free 1-year subscription to Golf Magazine! 
Great New Motocross Training Program Takes your Motocross Training to a Whole New Level |
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There is a great new training aid now available which promises great improvements in your motocross training results. If you are tired of poor results, slowing down toward the end of your motos, getting passed due to getting tired late in the motos, or running out of gas before your bike does, then this program may be great for you. I found it very useful and I hope it may help you also.
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