Gradient fill Gradient fill
Products
(For company information from the brands we offer or for their downloadable catalogues please click each logo above)
Home Up a Level Store Top Terms & Conds   View Cart Checkout  About UsNewsCGR RaceShop<span style='color: #ffffff;'>Contact Us</span> 

spacer imagespacer image

Yamaha YZ450F 2001

Products | Yamaha | YZ450F |  Yamaha YZ450F 2001

Pro Circuit 4-Stroke Cylinder Head Modifications

Pro Circuit 4-Stroke Cylinder Head Modifications

Ref: 4-STR CYL HEAD MOD


Price: 525.00

Quantity:

- 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.


Pro Circuit Throttle Body/Tube Kawasaki KX250F 2004-2019, KX450F 2004-2020, Suzuki RM-Z250 2004-2006, Yamaha WR/YZ250F 2001-2013 / WR/YZ400F 1998-2000, YZ450F 2003-2013

Pro Circuit Throttle Body/Tube Kawasaki KX250F 2004-2019, KX450F 2004-2020, Suzuki RM-Z250 2004-2006, Yamaha WR/YZ250F 2001-2013 / WR/YZ400F 1998-2000, YZ450F 2003-2013

Ref: TB-04


Price: 54.99

Quantity:

Fits The Following Bikes:
Kawasaki KX250F 2004-2019
Kawasaki KX450F 2004-2020
Suzuki RM-Z250 2004-2006
Yamaha WR/YZ250F 2001-2013
Yamaha WR/YZ400F 1998-2000
Yamaha YZ450F 2003-2013

Kawasaki 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.


Works Connection Launch Control *Special Offer* - Limited Stock , RRP 87.13

 

Works Connection Launch Control *Special Offer* - Limited Stock , RRP £87.13

Ref: 19-410


Price: 55.00

Quantity:

•Simple bolt-on item that helps prevent wheelying off the start
•Billet start button anodized in brilliant Type II Red
•Stainless steel, spring loaded, start pin
•Fork ring hard anodized for durability
•Detailed installation instructions include photos for each step
•Approximate install time: 30 minutes
•Drilling template and countersinking tool included
•Made in the USA


Works Connection Front Brake Cap Red or Blue

Works Connection Front Brake Cap Red or Blue - view 1Works Connection Front Brake Cap Red or Blue - view 2Works Connection Front Brake Cap Red or Blue - view 3
Works Connection Front Brake Cap Red or Blue - view 4Works Connection Front Brake Cap Red or Blue - view 5 

Works Connection Front Brake Cap Red or Blue

Ref: 21-030 thru 21-035


Price: 23.48

Quantity:

•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 USA

Click here to watch the video...





Works Connection - Engine Plugs - 2 plugs in kit

Works Connection - Engine Plugs - 2 plugs in kit - view 1Works Connection - Engine Plugs - 2 plugs in kit - view 2Works Connection - Engine Plugs - 2 plugs in kit - view 3
Works Connection - Engine Plugs - 2 plugs in kit - view 4Works Connection - Engine Plugs - 2 plugs in kit - view 5Works Connection - Engine Plugs - 2 plugs in kit - view 6

Works Connection - Engine Plugs - 2 plugs in kit

Ref: 24-530 - 24-535


Price: 36.77

Quantity:

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...


Works Connection Throttle Tube Kawasaki, Suzuki, Yamaha

Works Connection Throttle Tube Kawasaki, Suzuki, Yamaha

Ref: 22-490


Price: 45.00

Quantity:

•CNC machined from aircraft grade 6061 T-6 aluminum
•Type III hard anodized coating for smooth throttle pull
•Knurled surface for maximum grip adhesion
•Replaces the stock plastic tube

Click here to watch the video ...


Works Connection Fork Bleeder Valves

Works Connection Fork Bleeder Valves - view 1Works Connection Fork Bleeder Valves - view 2Works Connection Fork Bleeder Valves - view 3
Works Connection Fork Bleeder Valves - view 4Works Connection Fork Bleeder Valves - view 5Works Connection Fork Bleeder Valves - view 6
Works Connection Fork Bleeder Valves - view 7  

Works Connection Fork Bleeder Valves

Ref: 26-300


Price: 19.99

Quantity:

Fits Most Showa/KYB USD Forks
•EZ push-button operation eliminates harsh, built up air pressure instantly
•Relieving air pressure allows your suspension to operate as designed
•Compatible with Kayaba and Showa upside-down forks equipped with stock bleeder screws
•Simple installation replaces OE bleeder screws in minutes
•Two bleeder valves with adapters included in set

Click here to watch the video...


Works Connection Fuel Vent Cap

Works Connection Fuel Vent Cap - view 1Works Connection Fuel Vent Cap - view 2Works Connection Fuel Vent Cap - view 3
Works Connection Fuel Vent Cap - view 4  

Works Connection Fuel Vent Cap

Ref: 26-200


Price: 11.99

Quantity:

Fits all.
•Lets air supply into the fuel tank, but stops fuel from coming out
•Installs in place of the stock overflow hose in seconds
•CNC machined from 6061 T-6 billet aluminum
•Anodized rich Midnight Black with distinctive laser etched “WC” logo
•Durable 19mm long mounting hose included

Click here to watch the video...


Works Connection Tie Downs / Bike Straps

Works Connection Tie Downs / Bike Straps - view 1Works Connection Tie Downs / Bike Straps - view 2Works Connection Tie Downs / Bike Straps - view 3
Works Connection Tie Downs / Bike Straps - view 4Works Connection Tie Downs / Bike Straps - view 5 

Works Connection Tie Downs / Bike Straps

Ref: 26-400


Price: 32.99

Quantity:

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 pairs

Click here to watch the video...



Pro Circuit Works Standard Bike Stand

Pro Circuit Works Standard Bike Stand - view 1Pro Circuit Works Standard Bike Stand - view 2

Pro Circuit Works Standard Bike Stand

Ref: PCWS001


Price: 159.99

Quantity:

Please select below:

Size:
11.25" x 11.25" top base
16.5" tall

Bike 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 top
•Constructed from extruded aluminum for durability
•Light weight

Standard 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.



Pro Circuit Thermostrips (Set of 3)

Pro Circuit Thermostrips (Set of 3) - view 1Pro Circuit Thermostrips (Set of 3) - view 2Pro Circuit Thermostrips (Set of 3) - view 3
Pro Circuit Thermostrips (Set of 3) - view 4  

Pro Circuit Thermostrips (Set of 3)

Ref: PC4019-0000


Price: 21.99

Quantity:

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.


Pro Circuit Front Fender/Mud guard Decals (a pair)

Pro Circuit Front Fender/Mud guard Decals (a pair)

Ref: DC0005 to DC0040M


Price: 11.90

Quantity:

Pro Circuit front fender decals are 12 mil. thick vinyl decals with a super-sticky backing - perfect way to add style to your bike!

Sticker Dimensions:
Mini (65-100cc) - 26.3cm long, 3.1cm deep
Standard (Big Bikes) - 31.2cm long, 3.9cm deep

There is no warranty on stickers.


Products | Yamaha | YZ450F |  Yamaha YZ450F 2001

Buy now with PayPal
spacer image