YFZ450
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| CT Racing has uncorked the power that is available with the awesome YFZ450 motor. You can see from our dyno chart posted below that we have considerably more horsepower at every RPM split as compared to stock. The Sonic pipe is not a top end pipe. We really go after bottom and mid. What we have found through our R&D process is that we still end up with more peak horsepower than our competitors pipes, and the highest horsepower producing pipe on the market. This has been proven in three different Dirt Wheels Magazine pipe shootouts. Our kit is plug and play, complete with jetting and tips for air temp and altitude correction. We highly recommend the addition of the Pro Design Prow Flow filter system for maximum performance. |
| YFZ450 National Motor Package………..$2,195.00 Kit includes: CT Racing National Port Job, CT 5 angle radius valve job for oversize valves, 5 Del West +1mm Titanium Valves, CV 4 valve springs and valve spring base washers, Web Camshafts Performance Camshaft, CT Diamond Hone Cylinder and fit ring end gap, JE High Compression Piston, Complete top end gasket set with valve stem seals, CT Racing Cleans and preps your head, assemble and shims the cams for you.CT Racing has done a lot of development on the YFZ and YFZ450R motor and has is now offering there National motor kit to the public. This package will develop about 58 rear wheel HP and can dominate the MX racing scene. This is an awfully fun motor to ride with a very wide power curve, throw a Big Bore Kit at it for the Open Class or just to have even more HP.Just ship us your complete top end Cylinder and Head along with a good set of stock cams. To achieve Maximum HP you will need a Good competitive exhaust. |
| PLEASE NOTE: Your head is returned assembled and ready to bolt on and run. This kit price is for you shipping us your top-end only. If you would like to ship us your complete motor, add $300.00 for R&R of top-end. |
| CLICK Here for Shipping Instructions for Your Motor |
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| Description | Price | Photo |
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| CT Spark Arrestor – 16 Disc End Cap Kit with Bolts | $109.95 |  |
| ATV Exhaust Turn Down End Cap – Turn down tip includes 6 stainless steel bolts. | $59.95 |
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| Head Porting – CT Racing has done significant amounts of flow bench and dyno testing to offer you the best port layout for your application. We highly recommend getting a valve job at the same time the head is being ported. Our CNC valve job ties in with the port work to offer extremely effective flow numbers. | $375.00 |  |
| 3 Angle Valve Job – Quality valve job. | $180.00 |  |
| 5 Angle Radius Race Valve Job – The 5 angle radius Race valve job significantly raises the flow characteristics at low valve lift and definitely shows a horsepower increase throughout the useable power curve. | $240.00 | |
| 5 Angle Radius Race Valve Job for +1mm Exhaust Valves – The 5 angle radius Race valve job significantly raises the flow characteristics at low valve lift and definitely shows a horsepower increase throughout the useable power curve. The 5 angle valve job really shines on big valves as the seat diameter is opened up all the way into the aluminum casting, blending to the port work. Adding +1mm valves to a modified engine package helps the mid to top-end horsepower. Most aftermarket hi compression pistons are clearanced for +1mm valves. | $300.00 | |
| Split 4 Stroke Cases, Inspect Crank & Trans, & Reassemble (labor only) | $575.00 | |
| Disassemble & Reassemble 4 Stroke Top-end (from bottom-end only) | $300.00 | |
| Disassemble Head, Clean Ports, Prep, & Reassemble | $95.00 | |
| Rebuild 4 Stroke Crankshaft (labor only) | $125.00 | |
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| Dura Blue Foam Air Filter | $43.15 |
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| Pro Design Pro Flow Foam Air Filter Kit | |
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| Pro Design Pro Flow Replacement Foam Air Filter | $42.75 |
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| Pro Design Pro Flow K&N Air Filter Kit | |
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| Pro Design Pro Flow Replacement K&N Air Filter | $66.45 |
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| K&N Filter ATV Powerlid– Replaces stock airbox lid with K&N Filter element. With increased airflow, produce more HP w/ added protection of another filter. Comes complete with filter cover and jetting. | |
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| Fuel Customs Intake System – System includes a high horsepower intake, Fuel Customs K&N type air filter, and Outerwear. The system allows the stock air box to be used or eliminated. | |
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| Fuel Customs Replacement Filter and Cover– Need an extra filter or a replacement? This filter is for fuel custom intakes ONLY! | $65.00 |
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| YFZ450 Cylinder Works Standard Bore Kit 95mm – Available with Vertex 12:1 Comp. Piston. Kit includes: New Cylinder Works 95mm Standard Bore cylinder, Forged Piston Kit, and Cometic top-end gasket set. | |
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YFZ450 Cylinder Works 478cc Big Bore Kit Vertex Piston 98mm – Available with Vertex 12:1 Piston Kit. Kit includes: New Cylinder Works 98mm Big Bore cylinder, Forged Piston Kit, and Cometic top-end gasket set. |
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| YFZ450 Cylinder Works 478cc Big Bore Kit JE Piston 98mm – Available with JE 13:1 Piston Kit. Kit includes: New Cylinder Works 98mm Big Bore cylinder, Forged Piston Kit, and Cometic top-end gasket set. | |
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| YFZ450 CP Piston Kit 95mm – Available in 12.75:1, 13.25:1, 13.5:1, and 13.75:1 Comp Ratios. | $295.00 |
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| YFZ450 CP Piston Kit 96mm – Available in 13.25:1 Comp Ratio. | $295.00 |
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| YFZ450 CP Piston Kit 97mm – Available in 12.75:1, 13.25:1, and 13.75:1 Comp Ratios. | $295.00 |
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| YFZ450 CP Piston Kit 98mm – Available in 12.75:1, and 13.75:1 Comp Ratios. | $295.00 |
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| YFZ450 JE Hi Performance Piston Kit 95mm – Available in 12.5:1 and 13.5:1 Comp Ratios. Choose from Standard Piston or PRO SERIES Piston. | |
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| YFZ450 JE Hi Performance Piston Kit 97mm 468cc Big Bore– Available 12.5:1, 13:1, and 13.5:1 Comp Ratios. Choose from Standard Piston or PRO SERIES Piston. Cylinder bore and re-plate (stock cylinder) or aftermarket cylinder required. | |
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| YFZ450 JE Hi Performance Piston Kit 98mm 478cc Big Bore – Available 12.5:1, 13:1, and 13.5:1 Comp Ratios. Choose from Standard Piston or PRO SERIES Piston. Cylinder bore and re-plate (stock cylinder) or aftermarket cylinder required. | |
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| ’04-’05 YFZ450 Wossner Hi Performance Piston Kit 95mm – Available in 11.4:1 and 13.5:1 Comp Ratio. | |
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| ’04-’05 YFZ450 Wossner Hi Performance Piston Kit 98mm 468cc Big Bore – Available in 11.4:1 Comp Ratio. Cylinder bore and replate (stock cylinder) or aftermarket cylinder required. | |
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| ’06-’09 YFZ450 Wossner Hi Performance Piston Kit 95mm – Available in 11.4:1 and 13.5:1 Comp Ratio. | |
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| YFZ450 Vertex Hi Performance Piston Kit 95mm – Available in 12:1 and 13:1 Comp Ratios. | |
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| YFZ450 Vertex Hi Performance Piston Kit 98mm Big Bore 478cc – Available in 11.4:1 Comp Ratio. Aftermarket cylinder sleeve required. | |
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| YFZ450 Cometic Top End Gasket Set – Available in 96mm and 98mm Big Bore. Does not include valve stem seals. | |
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| YFZ450 Winderosa Complete Gasket Set – This complete engine gasket set also includes all of the engine oil seals – crank, countershaft, and ETC. Winderosa Gaskets are extemely high quality US made gasket sets. | |
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| YFZ450 Hot Rods Connecting Rod– Available in stock stroke. On 04′-05′ YFZ450 makes true 450cc (+1.4mm stroke). | |
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| YFZ450 Hot Rods Crank– Available in Stock Stroke or +3mm Stroker. Main bearings not included. On 04′-05′ YFZ450 makes true 450cc (+1.4mm stroke). | |
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| YFZ450 Hot Rods Heavy Duty Complete Bottom End Kit– Available in Stock Stroke or +3mm Stroker. This kit includes main bearings, seals, gaskets, and crank. On 04′-05′ YFZ450 makes true 450cc (+1.4mm stroke). | |
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YFZ450 Web Cam Camshaft – Available in MX build |
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YFZ450 Hot Cam Intake Camshaft – Available in Stage 1 and Stage 3. Exhaust cam includes auto-decompression mechanism. Uses stock valve springs. |
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YFZ450 Hot Cam Exhaust Camshaft – Available in Stage 1 and Stage 3. Exhaust cam includes auto-decompression mechanism. Uses stock valve springs. |
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| Del West Titanium ATV Intake Valves – Available in Standard, +1mm or +2mm Oversized. | |
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| Del West Titanium ATV Exhaust Valves –Available in Standard, +1mm or +2mm Oversized.. | |
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| YFZ450 Kibble White Stainless Steel Valves – Available in Standard and +1mm Oversized in both Intake or Exhaust Valves. Requires valve spring kit part #EC-KW-80-80206. | |
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| YFZ450 Kibble White Racing Valve Spring Kit with Retainers – This Kit (EC-KW-80-80206) is required to use with above Kibble White Valves. | |
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| YFZ450 CV4 Hi Performance Lightweight Racing Valve Spring Kit – This Kit comes COMPLETE with both Intake and Exhaust Springs. Must run CV4 Valve Spring Seats below. | |
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| YFZ450 CV4 Valve Spring Seat Kit – Intake or Exhaust Available. | $56.95 |
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| YFZ450 DLC Hard Coated Wrist Pin – Hard coating allows the rod to spin more freely and prevents galling which the YFZs are notorious for. Fits JE, CP, and Wossner pistons. Wrist pin dimensions: 51.15mm/2.014″ long X 20.00mm/0.787″ outside diameter. | $64.95 |
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| Hinson Billetproof Clutch Basket | |
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| Hinson Billetproof Pressure Plate | |
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| Hinson Billetproof Inner Hub | |
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| Hinson Billetproof Clutch Cover | |
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| Hinson Clutch Kit – Includes Fibers, Steels, & Springs | |
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| Dynatek Programmable Ignition – Direct plug in performance: 4 programmable timing curves, programmable rev limiter, external curve selector switch, plug-in module replacement, and more. |  |
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| R&D Flex Jet– The R and D flex jet replaces conventional fuel screw with a very accessible fuel screw that is on a cable. This screw can be run out as far as needed with no chance of it backing out, or falling out. | $32.95 |
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| R&D Power Bowl – Improves throttle response, by pushing more fuel through the accelerator pump, it also pushes fuel for a longer duration, as compared with the stock system. We find the R&D to be the best pump on the market. The R&D Power Bowl includes the R&D Power Pump.Features include: adjustable leak jet, anti-cavitation chamber, and stiffer detent spring. | $250.00 |
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| Fasst 1-1/8″ Flexx Bars – These are the best off road bars money can buy. Bars come with three different elastomers to get the proper cushioning for your type of riding along with a cross bar pad in your color choice of blue, grey, or red. Please Note: 1-1/8″ bar mount kit is required. | $359.95 |
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Fly Aero Taper 1-1/8″ Fat Bars with Bar Pad– Bars are available in black, gun metal, or silver. Please Note: 1-1/8″ bar mount kit is required. |
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Fly Universal 1-1/8″ Handlebar Mount Kit – This is a clamp set than converts your stock 7/8″ bar clamp to the 1-1/8″ Fat Bar set up. Can be used with any brand 1-1/8″ bars. |
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| Streamline Reflex Pro Pack with Clutch and Brake Lever – Available in Black, Blue, Red, and Orange. | |
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| Streamline Steering Stabilizer 7-Way Adjustable Non-Rebuildable– Available in Silver, Red, Blue, or Black. | |
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| Streamline Steering Stabilizer 7-Way Adjustable Rebuildable– Available in Silver, Red, Blue, or Black. | |
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| Streamline Steering Stabilizer 11-Way Adjustable Rebuildable– Available in Silver, Red, Blue, or Black. | |
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| Streamline Steering Stabilizer Carbon 11-Way Adjustable Rebuildable– Available in Silver, Red, Blue, or Black. | |
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| Pro Design Tether Kill Switch– Available in Black, Blue, or Red | $36.95 |
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| CV4 Billet Tether Kill Switch Mount – Handlebar mount for Pro Design and Pro Armor tether kill switches.This mount allows you to mount your switch to the bar without using up all of the spacing. Allows you to mount the switch much closer to the bend. Available in Black and Red. | $49.95 |
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| Streamline Steel-braided Front Brake Line Kit – (Please specify color & length) Available in black, blue, clear, green, red, or smoke. Some colors and lengths may need to be special ordered. | |
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| Streamline Steel-braided Rear Brake Line – (Please specify color & length) Available in black, blue, clear, green, red, or smoke. Some colors and lengths may need to be special ordered. | |
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| Billet Brake Line Clamp – 1 pair (Please specify color) Can be used with any 3/4″ or 1″ diameter A-arm. Available in black, blue, red, or silver. | |
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| Teixeria Tech Frame Gusset Kit – Strengthen and reinforce your chassis with this gusset kit. | $124.00 |
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Lone Star Racing Anti-vibration Steering Stem – Available in +1″ exteneded length and 7/8″ or 1 1/8″ Handlebar clamps included. |
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Laeger’s Anti-vibration Steering Stem– Available in +1″ or +2″ extended length and 1 1/8″ Handlebar clamps included. |
$335.00 |
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| Lone Star Racing Axcaliber Axle – Axcalibar Pro Racing Axles are one of the most highly recommended axles on the market for both racers and recreational riders. | |
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| Lone Star Racing Dual Row Bearing Carrier – The billet aluminum bearing housings are machined from 6061 aluminum for superior housing strength. | |
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| Dura Blue Heavy Duty Axle– This axle is a recreational level axle that is twice the strength of the stock axle. It’s a cost effective choice when reliability is a prime concern. | |
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| Dura Blue Eliminator 2+2 Extended Axle – The Eliminator axle used for all forms of racing and high performance applications. Many of the models come with the patented Posi•Lock system which removes threaded sections from the flexing area of the shaft (a source of crack generation). | |
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| Dura Blue Eliminator X-33 Pin Drive Axle with CAST Hubs – The X-33 axle uses the same superior material and heat treating as the Eliminator. The unique difference is in the design of the wheel hub mounting area. Standard design ATV axles neck down to about 1″ in diameter. A splined wheel hub slides onto the axle shaft and is retained with a hex nut. As all ATVer’s know, hubs loosen frequently. The X-33 changes all that. The wheel hub is clamped solid and driven by a pin on a 1-3/8″ diameter shaft. This axle is rifled to reduce weight near the rotational axis of the ATV. The X-33 allows for 16 different wheel offset alternatives. | |
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| Dura Blue Eliminator X-33 Pin Drive Axle with BILLET Hubs – This X-33 axle uses the same design, superior material and heat treating as the X-33 w/ cast hubs. The unique difference is in the wheel hub and that they are billet aluminum for superior strength. |  |
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