YFZ450
Athena 480cc Big Bore Kit
YFZ450 '04-'09
- Includes aluminum cylinder, piston kit, and special gasket set designed for larger water jackets
- Bolts on with no machining required
- 98mm big bore piston
- Aluminum cylinder designed with wider water jackets for better cooling.
- Forged hi-compression piston
- Includes all necessary Rings, Clips, and Gaskets.
Valve Shim Kit
9.48mm
Includes three valve shims of each size from 1.20 to 3.50 in .05 increments. 141 shims in total. 57 cents per shim!
Hotcams Performance Camshaft
- Stage 1: Mid-range and top-end power increase
- Stage 3: Excellent mid-range and top-end power increase
Hi-Flo Oil Filters
Pack of 10 / YFZ450 all years
TUV approved high quality paper oil filters. Manufactured to OEM specifications.
Edelbrock Performer Carburetor
YFZ450 all years
- Improve your ATV's horsepower
- Flat slide with single fuel circuit allows for easy external adjustment; no jets to replace
- Features internal fuel cell and anti-slosh plate in fuel bowl for consistent fuel delivery to the engine
- Easy installation! Mounts directly to the stock manifold
ATV Power Kit
- Includes jet kit, K&N air filter, pre-filter, K&N service kit, and instructions
- 10%-15% power increase
- Improved throttle response
K&N Air Filter
YFZ450 all years
- Increased air flow over the stock air filter
- Designed to increase horsepower and throttle response
- Designed to fit inside the factory air box
- Larger surface area over foam filters which offers longer service intervals in dusty conditions
- Four layers of premium cotton gauze provides outstanding filtration
- Washable & re-usable, never wears out
- One filter will last the lifetime of your bike
Powernow
YFZ450 '04-'05
Bolts onto the carburetor intake.
Highly recommended for trail-riding use. Improves power delivery at smaller throttle openings, smoothing out throttle response for a more controllable ride.
Powernow Plus
YFZ450 '04-'05
Similar to the Powernow, the Powernow Plus fits to the intake manifold. Can be used in conjunction with the Powernow.
FCR Carburetor "Dial it in" Combo
Buy both and save! Includes the Boyesen QuickShot 3 and Sunline Mixture Screw.
Boyesen QuickShot 3 Accelerator Pump Cover
Designed for Keihin FCR 38, 39, 40, 41 and 42mm
- Eliminates hesitation and bogging
- Provides instant response to throttle movements
- Reduces hot engine stalling
- Improves low end performance
- Bolt-on product that requires no modification
Sunline Calibrated Fuel Mixture Screw
Replaces the stock screw. Easy adjustment, without a screwdriver, of fuel mixture while the bike is running. For Keihin FCR carburetors.
Merge Racing FCR-MX accelerator pump spring
Dynojet Kit
Designed for use with stock engines using either stock or aftermarket exhaust and air filters.
- Provides a simple and affordable solution to carburetor tuning problems
- Allows you to tune your bike for increased power and smoothness while retaining fuel economy
- Includes a guide booklet on how to install and use your jet kit to it's full potential
Hinson Slipper Clutch
YFZ450 all years
Slipper clutches are designed to reduce the effect of engine braking. They are an essential addition to any race bike and offers better clutch and braking control.
- Provides more controllable downshifting and braking
- Reduces rear wheel lockup and patter caused by excessive engine braking
- Offers better protection against engine and gearbox damage caused by the engine going past redline on a downshift
- Reduced wear and tear on the gearbox
Hinson Slipper Clutches are easy to install and adjust. Highly recommended for non-race applications and beginner to intermediate racers.
DP Clutch Kit
YFZ450 all yearsReplace your worn clutch plates and springs to reduce fade and slip.
- Complete set of friction plates, steel plates, and springs
- Heavy-duty springs help prevent clutch slip
- Restores proper stack height, fixes clutch slip caused by wear and tear
FMF Powercore 4 Muffler
YFZ450 all years
- Boosts all around performance
- Aluminum exhaust with a stainless steel mid-pipe
- USFS approved spark arrestor
- Big weight savings over stock
FMF Powerbomb Header Pipe
YFZ450 all years
- Horsepower increase as much as 10%
- Stainless steel construction for strength and light weight
- The expansion chamber improves flow of the exhaust and acts as a pre-muffler to lower sound output
Vapor Speedometer / Tachometer
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