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

Honda trx450r ATV CP Pistons Logo

CP TRX450R 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 TRX450 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 TRX450R racing pistons are used by top professional TRX 450 ATV racing teams

Honda TRX450R cp pistons

Standard Features included with each CP Honda TRX450R Piston Kit:

Standard series pistons have a "M" in the part number
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

Additional Features for "Project X" Series TRX 450 Pistons

Project X Series pistons are the result of the latest in ultra high performance technology improvements from CP. Pistons listed below with "mx" preceding the part number are part of the new "Project X" piston line up.

Project X series pistons have a "MX" in the part number
Leading edge racing piston technology Fully boxed style forging for ultimate strength, durability and power
Coated Piston Skirts Internal windows allow additional oil to flow to pin
New piston skirt designs maximize power and reduce piston rocking Wrist pins treated with proprietary coating to eliminate pin galling

Get Holeshot Winning Power with CP Pistons TRX 450 Pistons!

CP Honda TRX450R Piston Kit and TRX 450R Big Bore Piston Kits

  • Piston/Gasket Kit Set includes: 1 Piston, 1 Piston Pin, Piston Rings, Pin Lock rings, 1 Top End Gasket Kit
  • Piston Kit includes: 1 Piston, 1Piston Pin, 1 set Piston Rings, Pin Lock rings for 1 cylinder
  • Gasket Kit Includes: Cometic high performance top end gaskets required to replace piston in 1 cylinder

2004 - 2005 Honda TRX450R CP Piston Kit

Stock Bore size is 94mm (3.701") Stock Stroke is 64.8mm (2.551")
Bore Size Disp. Comp Installation
Notes

honda trx450r piston and top end gasket kit

Piston/Gasket Kit

honda trx 450r piston kit

Piston Kit

Honda TRX450 top end gasket kit

Gasket Kit
94mm std. 450 cc 11.0-1 deglaze cylinder cpk2021 cp m2021 cp c7877
94mm std. 450 cc 12.0-1 deglaze cylinder cpk2035 cp m2035 cp c7877
94mm std. 450cc 13.0-1 deglaze cylinder cpk2017 cp m2017 cp c7877
95mm +1mm big bore 459cc 11.0-1 bore and replate cylinder cpk2022 cp m2022 cp c7199
95mm +1mm big bore 459cc 13.0-1 bore and replate cylinder cpk2018 cp m2018 cp c7199
96mm +2mm big bore 469cc 13.0-1 bore and replate cylinder cpk2019 cp m2019 cp c7201
97mm +3mm big bore 479cc 13.0-1 requires sleeve or cylinder cpk2055 cp m2055 cp c7201

2006 - 2014 Honda TRX450R CP Piston Kit

Stock Bore size is 96mm (3.780") Stock Stroke is 62mm (2.441")
96mm std. 449cc 12.5-1 deglaze cylinder cpk2036 cp m2036 cp c3139
96mm std. 449cc 13-1 deglaze cylinder cpk2037 cp m2037 cp c3139
96mm std. 449cc 13.5-1 deglaze cylinder cpk2053 cp m2053 cp c3139
98mm +2mm big bore 468cc 12.5-1 bore and replate cylinder cpk2038 cp m2038 cp c3141
100mm +4mm big bore 486cc 13-1 requires sleeve or cylinder cpk2054 cp m2054 cp c3156

TRX 450R FULL RACE Piston Kits

Full race TRX450R 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 gas ports are added to maximize ring seal while a skirt coating is included to improve power and provide additional lubrication, minimizing friction in extreme competition conditions.

The full race pistons come complete with high performance rings, lightweight pins and locks.

2004 - 2005 TRX 450R FULL RACE Piston

Stock Bore size is 94mm (3.701") Stock Stroke is 64.8mm (2.551")
94mm std. 450 cc 13.5-1 deglaze cylinder cpk2025 cp m2025 cp c7877

2006 - 2014 TRX 450R FULL RACE PISTON

Stock Bore size is 96mm (3.780") Stock Stroke is 62mm (2.441")
96mm std. 450cc 14-1 deglaze cylinder cpkx2145 cp mx2045 cp c3139

 

Project X TRX450R Platinum Racing Piston, Rod, Gasket Kits

Developed and proven in the 2009 AMA outdoor motocross season, these championship winning kits have once again changed the game. Project X Platinum Kits feature the same top of the line products that top professionals rely on. The redesigned piston and rod combo gives your engine a lightweight assembly that is engineered to give you more power and durability. Revolutionary to the industry, these types of assemblies were once only available as custom pieces at custom prices. Now, off the shelf and available, these kits are just the thing you need to transform your bike into a racing machine without breaking the bank.

  • Platinum Kit includes: Full Race Piston, Piston Pin, Piston Rings, Pin Lock rings, Carrillo Rod and Gasket Kit
  • Piston Kit includes: Full Race Piston, Piston Pin, Piston Rings, Pin Lock rings for 1 cylinder
  • Gasket Kit Includes: Cometic high performance top end gaskets required to replace piston and rod in 1 cylinder

 

2006 - 2014 Honda TRX450R Project X Platinum Professional Racing Kit

TRX 450 Stock Bore size is 96mm (3.780") Stock Stroke is 62mm (2.441")
Bore Size Disp. Comp Installation
Notes

Honda TRX450R piston, TRX450R rod and top end gasket kit

Platinum Kit

Honda TRX450R piston kit

Piston Kit

Honda TRX 450 R top end gasket kit

Gasket Kit
96mm std. 450 cc 14-1 deglaze cylinder, uses stock pin diameter and 2.5mm Longer than stock Rod; Lightweight cpkx2p46 cp mx2p45 cp c3139est

 

Carrillo TRX450R Connecting Rod Honda TRX 450R Rod
Honda TRX450R Carrillo Connecting Rod Carrillo TRX 450R connecting rod image

Premium Carrillo TRX450R connecting rod provides superior strength for extreme high performance and racing TRX 450R engines. Designed with legendary Carrillo quality to give you an extremely strong and dependable replacement connecting rod at a reasonable price. Can be used as a stock replacement connecting rod as well as for high performance and racing engines, including big bore engines.

2004 - 2005 TRX450R Connecting Rod

Carrillo HO-TXCA-2<-04384N

2006 - 2014 TRX 450R Connecting Rod

Carrillo Rod HO-TX45CA-2<-04156N

Replacement Special Carrillo TRX450R Rod for use with CP Pistons Platinum Kit Piston
TRX 450 Platinum rod, length and pin size to match the Platinum Pistons listed above. Works ONLY with the Project X Platinum pistons as this rod is 2.5mm longer than a stock TRX 450R connecting rod.

2006 - 2014 TRX450 Project X Platinum Connecting Rod

Carrillo HO-TX4519CA<-04254N


Back to Top TRX450 Pistons Page

The pistons and gaskets listed on this page fit the following model year TRX450R ATV engines:

2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Honda TRX 450 R Piston Kit

 

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