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The K&N 63-1123 AirCharger air intake system replaces the restrictive factory air filter and air intake housing in some Yamaha YFZ450 models. K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow. This allows your engine to inhale a larger amount of air than the factory air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The 63-1123 air intake comes with a black rubber topped K&N high-flow air filter and a heat shield that installs into the previous air box space. Air is directed through an aerodynamically engineered intake tube into the engine's throttle body for a guaranteed power gain. The heat shield accommodates a replacement silicone crank case vent hose and supplied CCV filter. The oversized cone shaped air filter comes with a water repellent DryCharger filter wrap to protect the filter from moisture. This air intake is relatively easy to install usually in 90 minutes or less using existing factory mounting points. The tools needed are a screwdriver, ratchet set and some wrenches.
Guaranteed to increase horsepower
Designed to improve throttle response and engine sound
Free-flowing high density polyethylene tube
Easy to install, usually in 90 minutes or less
Replaces entire factory air intake system
Washable and reusable air filter
Estimated Horsepower Gain
4.2 HP @ 7200 RPM
Replacement Filter
RU-4960XD
Air Filter Color
Red
Air Filter Material
Cotton Gauze
Warranty
No-Hassle Lifetime Limited
Product Style
Motorcycle Intake System
Air Filter Outlet Shape
Round
Intake Pipe Color / Finish
Black
Intake Pipe Material
High-Density Cross-Linked Polyethylene
Street Legal In All US States
Not legal for sale or use in California on any pollution controlled motor vehicle.