TRX450R Piston Kits CP Pistons TRX 450R Standard Bore, TRX450R Big Bore and High Compression Piston Kits

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.

Honda TRX450R cp pistons

Standard Features included with each Honda TRX 450 R 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.

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 c7877est	deglaze cylinder
cp m2035	94mm std.	450 cc	12.0-1	cp c7877est	deglaze cylinder
cp m2017	94mm std.	450cc	13.0-1	cp c7877est	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 c7201est	bore and replate cylinder
cp m2019	96mm +2mm	469cc	13.0-1	cp c7201est	bore and replate cylinder
cp m2055	97mm +3mm	479cc	13.0-1	cp c7201est	requires sleeve or 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 TRX 450R PISTON FULL RACE PISTON 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 c7877est	deglaze cylinder
2006 - 2009 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 m2053	96mm std.	449cc	13.5-1	cp c3139est	deglaze cylinder
cp m2038	98mm +2mm	468cc	12.5-1	cp c3141est	bore and replate cylinder
cp m2054	100mm +4mm	486cc	13-1	cp c3156est	requires sleeve or cylinder
2006 - 2009 TRX 450 R PISTON FULL RACE PISTON Stock Bore size is 96mm (3.780") Stock Stroke is 62mm (2.441") 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 m2045	96mm std.	450cc	14-1	cp c3139est	deglaze cylinder

ATV, Parts, Apparel and Accessories at MotoSport.com

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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!