Jokers Racing > Honda TRX450R Parts > TRX450R Motor & Engine Parts

06/07 Honda TRX450R 943 Web Cam Shaft (Web Cam)

Great top-end performer, better than Hotcam's Stage 2, with minimal loss on bottom-end. One of the key components to get you close to 50 HP for you recreational riders.

04/05 Honda TRX450R Cam Shaft (Web Cam)

Great top-end performer, better than Hotcam's Stage 2, with minimal loss on bottom-end. One of the key components to get you close to 48 HP for you recreational riders.

Honda TRX450R ICE CUBE 542cc Big Bore Cylinder Kit With Long Rod Crank (MAX Power)

Bolt on kit TRX450R 542cc Specifications Fits 2004-2005 TRX 450R models. "All of our engine kits are built using Wiseco Pistons" Kit includes: ICE CUBE cylinder (the only billet nickel plated cylinder on the planet) Stroked and balanced crankshaft Custom Xtreme coated piston kit with piston, rings, wrist pin, circlips. All necessary Top end gaskets for installation Jetting recommendations Benefits: Horsepower gain More torque Increased water capacity helps reduce engine temperatures 6061 billet aluminium outer cylinder increases heat transfer Re-useable rubber head gaskets. (some models) Apticote 2000 ceramic nickel plated cylinder bore Polished/anodized exterior (color options available on most models) Forged/plated aluminium sleeve ATV models include coated piston (add $50 for bike models) Thicker stronger cylinder skirt design Stroked & balanced crankshaft Engine Modifications Included: Bore = 99mm Stroke = 70.4 stroker crank with knife rod. Displacement = 542cc Cylinder: New billet aluminum ICE CUBE cylinder with a forged aluminum sleeve plated Piston: New custom Xtreme coated piston. Head: No modification required Crankcase: No modification required Compression: Many options available customized to your preference. Note: Counter balance shaft modofication required.

Honda TRX450R ICE CUBE 522cc Big Bore Cylinder Kit With Long Rod Crank (MAX Power)

Bolt on kit TRX450R 522cc Specifications Fits 2006-2008 TRX 450R models. "All of our engine kits are built using Wiseco Pistons" Kit includes: ICE CUBE cylinder (the only billet nickel plated cylinder on the planet) Stroked and balanced crankshaft Custom Xtreme coated piston kit with piston, rings, wrist pin, circlips. All necessary Top end gaskets for installation Jetting recommendations Benefits: Horsepower gain More torque Increased water capacity helps reduce engine temperatures 6061 billet aluminium outer cylinder increases heat transfer Re-useable rubber head gaskets. (some models) Apticote 2000 ceramic nickel plated cylinder bore Polished/anodized exterior (color options available on most models) Forged/plated aluminium sleeve ATV models include coated piston (add $50 for bike models) Thicker stronger cylinder skirt design Stroked & balanced crankshaft Engine Modifications Included: Bore = 100mm Stroke = 62.4 stroker crank with knife rod. Displacement = 521.5cc Cylinder: New billet aluminum ICE CUBE cylinder with a forged aluminum sleeve plated Piston: New custom Xtreme coated piston. Head: No modification required Crankcase: No modification required Compression: Many options available customized to your preference. Note: Counter balance shaft modofication required.

Honda TRX450R ICE CUBE 488cc 498cc Big Bore Cylinder Kit (MAX Power)

Bolt on kit TRX450R 488cc 498cc Specifications Fits 2003-2008 TRX 450R models. "2004-2005 498cc kits have a Bore of 99mm & a Stroke witch is Stock Displacement." "2006-2007 488cc kits have a Bore of 100mm & a Stroke witch is 62.1. " Kit includes: ICE CUBE cylinder Custom Xtreme coated piston kit with piston, rings, wrist pin, circlips. Top end gaskets Jetting recommendations Unlimited technical support Benefits: Horsepower gain More torque Increased water capacity helps reduce engine temperatures 6061 billet aluminium outer cylinder increases heat transfer Re-useable rubber head gaskets. (some models) Apticote 2000 ceramic nickel plated cylinder bore Polished/anodized exterior (color options available on most models) Forged/plated aluminium sleeve ATV models include coated piston (add $50 for bike models) Thicker stronger cylinder skirt design Engine Modifications Included: Bore = 99mm Stroke = Stock Displacement =488/498cc Cylinder: New billet aluminum ICE CUBE cylinder with a forged aluminum sleeve plated Piston: New custom Xtreme coated piston. Head: No modification required Crankcase: No modification required Compression: Many options available customized to your preference.

Honda TRX450R Power Now (Scary Fast)

The Scary Fast POWERNOWâ provides bigger horsepower improvements, greater power at 1/4 and 1/2 throttle for 2-strokes, 4-strokes, mini bikes and ATVs. Mounted into the backside/airboot side of the carburetor, the Power Nowâ, slices the single air venturi going into the carburetor into 2 smaller, faster, venturis via the PowerNowââs âPower Plateâ. Our trademarked revolutionary Power Plate assists the vacuum of the fast moving air by drawing the fastest moving air molecules through a precisely positioned hole in the plate, drastically increasing the speed of the top and bottom venturis entering the cylinder. With this modification, the result is volumetric engine efficiency through uncompromised airflow velocity. Rated as Dirt Riderâs 2005 Product of the Year.

Honda TRX450R Piston Kit (Racers Edge)

Piston Kit Our piston kits our made with performance and durability designed. We lightened and reduced surface friction to gain HP and acceleration. We also carefully added the correct piston to valve clearance for high duration cams. 11.5:1 94mm Piston Kit Piston Ring Set, 94 mm 13.5:1 94mm Piston Kit Piston Ring Set, 94 mm *Piston kits include rings, clips, and wrist pin **13.5 to 1 compression piston kits above require at least 100 octane premium race fuel.

Honda TRX450R Performance Camshaft (Trinity Racing)

An overall performance camshaft for your TRX450R. No cam core return is required for this camshaft.

Honda TRX450R Performance Cam (Eddie Sanders)

Improve your TRX's performance with a new HotCam camshaft! With a steeper lobe than stock, this is a simple bolt-on modification that will unleash the power in your Honda. This is a mild, overall performance camshaft.

Honda TRX450R Outlaw Racing Piston Kit (Janssen Motorsports)

Janssen Motorsports is proud to introduce our latest engine component, the Outlaw Racing Piston Kit. We have been busy working with JE Performance Pistons to develop our very own high performance racing piston. The new Outlaw pistons feature oversized valve pockets to accommodate the latest in big valve head performance. It is no longer necessary to spend extra cash to have a 'fast shop' custom grind a piston to accept the tremendous performance gains that big valve heads can provide. Now you can rest assured that you have a precise repeatable piston top profile with exact piston to valve clearances. The Outlaw piston also benefits from improved oiling performance to the wrist pin over stock. Poor wrist pin oiling has resulted in engine failure on various models including the popular YFZ 450. Compression Ratios of 12:1 (flat track applications) and 12.5:1 (motocross applications) are currently available. All pistons include oil and compression rings.

Honda TRX450R Outlaw Knife Edge Connecting Rod (Janssen Motorsports)

Available now for the TRX450R is our new knife edge connecting rods. These custom forged rods are much stronger than stock and an absolute must for modified motors. Our connecting rods feature a "knife" edge design, which in essence is a radiused leading edge along the beam. This is an improvement over the conventional I-beam design by reduces the friction (windage effect) between the rod and the air/oil in the lower end of the motor allowing your more motor to produce more HP particularly at high engine RPM's.

Honda TRX450R Outlaw Big Valve Head Modifications (Janssen Motorsports)

Janssen Motorsports is very proud to introduce our big valve head modifications. If you looking for big horse power numbers with a broad power curve, look no further. We have developed a series of head mods that will satisfy even our toughest critics. We start with intake and exhaust porting. Followed by the installation of Beryllium valve seats and oversized intake and exhaust valves. These valves are one-piece titanium valve that is far superior to the stock two-piece design. Next your head will receive new titanium Keepers and bronze guides. The end result is a national caliber racing head that will astound the competition. Your piston of choice will require modifications to allow clearance for the new valves.

Honda TRX450R OFF ROAD Edelbrock CARBURETOR (Advantage)

2004-2005 TRX450R CARBURETOR Works fine on stock engines with competition exhaust and modified or no air box lid. Bore: 40mm round FEATURES AND BENEFITS OF EDELBROCK CARBURETORS Edelbrock Performer Series carbs are designed for todayâs high-performance four-stroke engines, providing improved power and throttle response through out the rpm range. The accelerator pump allows crisp throttle response and added external tuneability for applications that demand a broad powerband. Every Performer Series Edelbrock ATV carb offers these outstanding features: ADJUSTABLE ACCELERATOR PUMP - Adjustable pump offers instant throttle response and easy starting capability EASILY ADJUSTABLE - Externally adjustable needle height for easy low speed fuel calibration THROTTLE SHAFT BEARINGS - Sealed 440 stainless steel shaft bearings allow for a lifetime of smooth throttle operation HARD ANODIZED FLAT SLIDE - Hard anodized aluminum slide makes for wear resistance and exceptionally smooth rideability CARBURETOR BODIES - Electroless nickel plated finish for durability and good looks COMPLETE KITS - All Edelbrock Carb Kits include all necessary hardware for installation and tuning plus high-quality Motion Pro throttle cables WET-FLOW TESTED - Every Edelbrock motorcycle carb is wet-flow tested before packaging for quality assurance Notes: All carb kits are pre-jetted on stock motors with open/modified air box, aftermarket exhaust, stock ignition, and 91 octane fuel at 1500 ft. elevation unless specified. Thumb kits use stock throttle housing unless specified. Twist kits include push/pull cables which may fit into the stock throttle housing. All ATV twist kits and some motorcycle kits will have a push/pull type throttle housing included.

Honda TRX450R Needle Bearing And Seal Kit (HOUSER RACING)
Needle Bearing & Seal Kit, 2004-2006 Honda TRX450R Kit includes: 131903-sleeve (8), 132004-needle bearing (16), & 132013-seal (16)

Honda TRX450R Keihin FCR Performance Carb (Eddie Sanders)
Smooth bore for maximum air flow. Flat slide with vacuum release plate for best throttle response and flow control. Rollers on throttle valves and progressive linkage for smooth operation and control. Equipped with acceleration without flat spots. Designed for easy installations on popular motorcycles. Easy jetting which can be done at track side.

Honda TRX450R High Performance Camshaft (Trinity Racing)
Improve your TRX's performance with a new HotCam camshaft! With a steeper lobe than stock, this is a simple bolt-on modification that will unleash the power in your Honda. This is a mild, overall performance camshaft. NOTE: Trinity Racing offers many other cams for the TXR450R for other riding styles.

Honda TRX450R High Compression Piston (Trinity Racing)
Get the most out of your race fuel powered TRX450R with this high-compression piston from JE! Coming in at 56 grams lighter than the stock piston, this 13:1 forged aluminum piston will wake up your TRX! It also offers increased protection with dual oil-feed holes for the wristpin and is a direct replacement for your stock piston. No boring, honing, or re-Nikasiling needed.

Honda TRX450R Hi Flo Impeller (ModQuad)
Honda 450R Hi-Flow Impeller. Ligher Weight and Deeper Fins for Increased Water Flow.

Honda TRX450R Heavy Duty Clutch Kit (Trinity Racing)
Horsepower always takes the path of least resistance, so Trinity Racing made this heavy duty clutch kit for your TRX450R. With discs and plates that increase the holding surface area by 30% and springs that increase the holding pressure by 35%, even your big bore TRX450R won't be able to power through this clutch. Don't get caught with a fried clutch your next trip riding and upgrade to Trinity's heavy duty clutch kit today!

Honda TRX450R Flywheel Side Case Gasket (Trail Tech)
It's always a good idea to keep a spare gasket on hand when opening your sidecase. Any rips or tears to the gasket while removing the sidecase will require a gasket replacement. 2004 - 2005
2006

Honda TRX450R Flywheel Puller (Trail Tech)
Use the correct tool. It can be harmful to your engine to remove a flywheel without the correct flywheel puller. The pullers fit both OEM and Trail Tech flywheels. 2004 - 2005
2006

Honda TRX450R Flywheel (Trail Tech)
Flywheels for Honda TRX450R 2004-05. There is no appeciable improvement in lighting output with Trail Tech flywheels on the TRX450R as compared to stock. Available: +8 oz or -4 oz.

Honda TRX450R EDELBROCK CARBURETOR (Advantage)
2004-2005 TRX450R Works fine on stock engines with competition exhaust and modified or no air box lid. Bore: 40mm round Thumb Kit #3198 Twist Kit #3199 Thumb Throttle Cable #9348 - (5" cable extension for use with Edelbrock Performer Series carb for modified handlebars/steering stems) FEATURES AND BENEFITS OF EDELBROCK CARBURETORS Edelbrock Performer Series carbs are designed for todayâs high-performance four-stroke engines, providing improved power and throttle response through out the rpm range. The accelerator pump allows crisp throttle response and added external tuneability for applications that demand a broad powerband. Every Performer Series Edelbrock ATV carb offers these outstanding features: ADJUSTABLE ACCELERATOR PUMP - Adjustable pump offers instant throttle response and easy starting capability EASILY ADJUSTABLE - Externally adjustable needle height for easy low speed fuel calibration THROTTLE SHAFT BEARINGS - Sealed 440 stainless steel shaft bearings allow for a lifetime of smooth throttle operation HARD ANODIZED FLAT SLIDE - Hard anodized aluminum slide makes for wear resistance and exceptionally smooth rideability CARBURETOR BODIES - Electroless nickel plated finish for durability and good looks COMPLETE KITS - All Edelbrock Carb Kits include all necessary hardware for installation and tuning plus high-quality Motion Pro throttle cables WET-FLOW TESTED - Every Edelbrock motorcycle carb is wet-flow tested before packaging for quality assurance

Honda TRX450R Balanced Crank Assembly (Janssen Motorsports)
Get the most out of your lower end with a balanced crank assembly. Janssen Motorsports will take your core crank assembly and weld, true and balance it to your piston of choice. This modification results in a much smoother (less vibration) running engine providing much longer crank bearing life particularly when running rev box's that increase the stock redline RPM. A Janssen Knife Edge Rod is a great complement to this crank assembly modification.

04/05 Honda TRX450R 12.0:1 TRX Piston Kit (Rossier)
Single compression ring, double-pin oilers, increased compression height. Will accept plus-1 intake, plus-2 exhaust with valve pockets deep enough for most camshafts.

Honda TRX450R Valve Train Parts (Racers Edge)
We have been doing extensive camshaft and valve testing on the Dyno to give you the utmost in power and reliability. It gives you tremendous low end power without losing the top end revs. We recommend shortened valve guides and HD valve springs. To further increase power we recommend to degree in camshafts to obtain optimum results. TRX "Pro Mx" Cam Shaft TRX Double Valve spring with Titanium retainers Bronze Valve guides Titanium Intake Valve ( 2 req. ) Stainless Exhaust Valve ( 2 req. )

Honda TRX450R Rossier Engineering Exhaust (Hardkor)
RE exhausts feature brushed stainless steel head and mid pipes so they won't corrode or rust. No shortcuts here - we did it right. The canister is brushed aluminum with a machined turn-down end to help quiet things down a few decibels. When combined with an aftermarket filter, proper jetting and cam, our TRX450 gained 9.0 HP at the rear wheel! We tried many pipes and found you can only achieve 42.5 HP peak with the stock cam - the HRCâ or Rossier cam will give you the rest of the power. Part designed for: 2004 - 05 Honda TRX 450R

Honda TRX450R PWR Radiator (Trinity Racing)
PWR radiators are just what you need for your custom ATV! These all-aluminum radiators are thicker than stock, feature more rows, and will cool your high-performance ATV better than your stock unit.

Honda TRX450R Pro Port Porting (Trinity Racing)
Porting is not just about making it bigger, it's about making it flow better. To perfect the flow characteristics in your TRX450 head, combine your porting with Trinity Racing's high-flow valve job.

Honda TRX450R Z START CLUTCH KIT (Rekluse)
TRX450 z-START CLUTCH Available for 04 through 06 models. This z-Start Clutch model retains the clutch lever for a manual override of the auto-clutch. It is internally adjuastable. Rekluse developed the z-Start Clutch to revolutionize the clutch industry. The z-Start Clutch is the ultimate performance product for every rider. The z-Start Clutch eliminates stalling and puts more power to the ground in the most demanding situations. Whether youâre a new trail rider or a pro motocross competitor, you can benefit from the latest in race proven clutch technology. The z-Start Clutch is easy to install as it simply replaces your stock pressure plate with no special modifications. The z-Start Clutch automatically disengages the engine at idle speed. As throttle is applied, centrifugal forces engage the clutch providing perfect clutch feathering control as the throttle is applied. The z-Start Clutch will eliminate stalling, reduce arm-pump, increase corner speed, improve traction and tire life, get quicker starts and retain the stock clutch lever to fully override the z-Start clutch giving the rider the control of a stock clutch operated bike.

Honda TRX450R TCS Clutch Basket (Rekluse)
Honda TRX450R TCS Clutch Basket

06/07 Honda TRX450R Piston Kit (Rossier)
14:1 compression, single ring, double-pin oilers, slipper piston. Increased compression height and valve pockets deep enough for most any camshaft available. Kits include: piston, wrist pin, rings, circlips.

Honda TRX450R Spindle stud replacement (Hardkor)
These new "state of the art" spindle studs provide both yield and tensile strength increases of 100% over a stock factory stud (ASTM/AISI grade 4130). Extremely fine surface finishes and exclusive design features eliminate stress risers common to mass produced examples. Please note that the design of the new 450R spindle requires your spindles to be shipped to us for removal and installation of the new spindle stud. This 48 hour service is included in the price. Part designed for: 2004 - 2006 Honda TRX450R

Honda TRX450R 520cc Big Bore Cylinder Kit (Trinity Racing)
This kit includes: High-Compression JE Piston Gasket Kit New Custom Cylinder Kit Featuring incredible reliability including victories in the Nevada 1000 and the Vegas to Reno BITD races, this 520cc big bore cylinder kit provides both the power and ridability you desire in a big bore kit! NOTE: Cam shown in picture is not included in the 520cc kit but is available separately for $199.99.

Honda TRX450R 41mm FCR Carburetor Kit (Trinity Racing)
Available in a 41mm version, the FCR carb will work wonders for your new TRX450R. You will see huge gains throughout the powerband and your intake system will be able to keep up with the demands of the aftermarket exhaust system or big bore kit on your TRX. This carburetor kit comes with a Motion Pro twist throttle assembly.