Products | Yamaha | YZ450F | Yamaha YZ450F 2002
Ref: 4-STR CYL HEAD MOD
- Modified Head by Pro Circuit *Note: * Indicates parts to be supplied by customer (this cost is for your bare cylinder head, no valves, valve springs etc). If you would like CGH to strip/rebuild your cylinder head this will incurr extra charges.Pro Circuit four-stroke cylinder head tuning to your own cylinder head. Send your cylinder head to CGH and we will forward this to Pro Circuit USA to be modified in house, once this has been completed it will be then returned to CGH and then returned to you.The above cost includes the cost of sending your standard bare head to Pro Circuit USA, modifications by Pro Circuit USA and return to CGH plus all of your import duties, vat, delivery etc (no hidden costs, unless we have to strip your cylinder head valves, valve springs etc - check with us for this cost if required). There is a fine line to building an engine. If the limits are pushed too far (like many engine builders do) there are reliability issues. Pro Circuit's goal is to give you the very best in high-performance service without any loss of reliability. Pro Circuit engine modifications will give you increased power from bottom to top!Pro Circuit has specialized in motor modifications since the early two-stroke Husky days. Our expertise in building the world's most advanced engines is a direct result of working with the fastest and most talented racers. Riders like James Stewart, Ricky Carmichael, Ryan Villopoto, Chad Reed and more have been a great help in our engine development process. In addition, every motor we build is thoroughly tested using our flow bench and race shop dynos. From two-strokes to four-strokes, races bikes to ATV's, almost any machine can benefit from Pro Circuit motor modifications.This modification does not include copper valve seats or installation, this option can be added to your head while at Pro Circuit USA - please contact us for prices.You can also buy a brand new cylinder head from Pro Circuit with these modifications if you have a damaged cylinder head - please contact us for prices.
Fits The Following Bikes:Kawasaki KX250F 2004-2019Kawasaki KX450F 2004-2020Suzuki RM-Z250 2004-2006Yamaha WR/YZ250F 2001-2013Yamaha WR/YZ400F 1998-2000Yamaha YZ450F 2003-2013Kawasaki Throttle Tube Description:Pro Circuit throttle tubes are CNC machined out of aluminum, and are Teflon coated on the inside to reduce friction which gives you a smoother twist of the throttle.
Simple bolt-on item that helps prevent wheelying off the start Billet start button anodized in brilliant Type II RedStainless steel, spring loaded, start pinFork ring hard anodized for durabilityDetailed installation instructions include photos for each stepApproximate install time: 30 minutesDrilling template and countersinking tool includedMade in the USA
Ref: 21-030 thru 21-035
CNC machined from billet aluminum to exacting specifications Polished to a mirror finish prior to anodizing Engraved logo Available in Blue, Red or Black Made in the USAClick here to watch the video...
Ref: 24-530 - 24-535
Precision machined from 6061 T-6 aluminum Simple positive installation with an Allen wrench Replaces the stock plugs Polished to a mirror finish prior to anodizing resulting in a brilliant look Available in Blue, Red or Black Made in the USA Click here to watch the video...
CNC machined from aircraft grade 6061 T-6 aluminum Type III hard anodized coating for smooth throttle pull Knurled surface for maximum grip adhesionReplaces the stock plastic tube Click here to watch the video ...
Fits Most Showa/KYB USD ForksEZ push-button operation eliminates harsh, built up air pressure instantlyRelieving air pressure allows your suspension to operate as designedCompatible with Kayaba and Showa upside-down forks equipped with stock bleeder screws Simple installation replaces OE bleeder screws in minutesTwo bleeder valves with adapters included in setClick here to watch the video...
Fits all.Lets air supply into the fuel tank, but stops fuel from coming outInstalls in place of the stock overflow hose in secondsCNC machined from 6061 T-6 billet aluminumAnodized rich Midnight Black with distinctive laser etched WC logoDurable 19mm long mounting hose includedClick here to watch the video...
Premium design includes Works Connection hand screened logo 1½ inch wide U.S. made 6000 lb.test abrasion resistant nylon webbing Heavy-Duty Powertye Cam-lock Powertye Soft-Tye extension sewn in to protect your handlebars Vinyl coated S-Hook for Soft-Tye Vinyl coated secure Latch-hook at bottom for added security Double security stitching 1,000 lb. rated assembly strength Black with Red Powertye Soft-Tye extension 6½ ft. length Sold in pairsClick here to watch the video...
Size:11.25" x 11.25" top base16.5" tallBike Stand Description:The Pro Circuit Works Stand has been a factory favorite for many years. Works Stands are available for mini bikes and standard-sized motorcycles. Stands feature a non-slip rubber top and are built from extruded aluminum for durability and light weight. Pro Circuit also makes accessory side panels for both the mini and standard Works stands.Features Include:Non-slip rubber topConstructed from extruded aluminum for durabilityLight weightStandard Side Panels Description:Side panels are made from aluminum and have a high-strength 3M decal to provide a surface for rider's and mechanic's names.
Thermostrips Description:Overheating is the main reason your bike loses power and performance. Today's high performance race bikes are at the cutting edge of development and continue to push the limits of existing technology. Pro Circuit Thermostrips come in a package of three so you can monitor the running temperature on your motor, shock or radiators to make sure you're not losing performance due to overheating. Simply pull the backing off the Thermostrips and place it on your motor, radiator or shock for an accurate heat reading. The Thermostrips will change color as the item it's placed on increases in temperature with a measurable heat range from 149 to 248 degrees. As it cools down, the color fades back to black. These Thermostrips will continue to give you accurate readings every time you ride until the strip is removed.