YZ450F Piston CP Pistons YZ 450 Piston Big Bore Yamaha YZ450F Piston

High performance and racing Yamaha YZ 450 piston kits are available from CP Pistons for all model years of the YZ450F four stroke dirt bikes. Standard bore and big bore YZ450F 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 dirt bike racing pistons are used by top professional riders and teams including:

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.

2003 - 2009 Yamaha YZ 450 F CP Piston Kit Stock Bore size is 95mm (3.740") Stock Stroke is 63.4mm (2.496") Disp.= Engine size in ccs Comp = Compression
Part #	Bore Size	Disp	Comp	Top End Gasket Kit #	Installation Notes
cp m1010	95mm std.	450 cc	13.0-1	cp c7947est 2003 - 2005 cp c7908est 2006 - 2009	deglaze cylinder
cp m1011	95mm std.	450 cc	13.5-1	cp c7947est 2003 - 2005 cp c7908est 2006 - 2009	deglaze cylinder
cp m1030	+2mm 97mm big bore	468cc	13.0-1	cp c3064 2003-2007 cp c3178 2009	bore and replate cylinder
cp m1031	+2mm 97mm big bore	468cc	13.5-1	cp c3064 2003-2007 cp c3178 2009	bore and replate cylinder
cp m1051	+3mm 98mm big bore	478cc	13.5-1	e-mail or call us	requires sleeve or cylinder
2003 - 2009 YZ 450F PISTON FULL RACE Stock Bore size is 95mm (3.740") Stock Stroke is 63.4mm (2.496") 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 m1043	95mm std.	450 cc	13.75-1	cp c7947est 2003 - 2005 cp c7908est 2006 - 2009	deglaze cylinder

Great New Motocross Training Program Takes your Motocross Training to a Whole New Level

Motocross Training Journal Software Box Image

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.

Click here to read more about this fantastic training aid!

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!