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T-Doshi9

06 yzf 450f

4 posts in this topic

Yz450 Gets A 5 Speed And A Titanium Rear Spring. Rad Shrouds Like Hon/suz/kaw! YELOW 50th Anniversary Edition looks Sick!!!!!!!

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If you click on the specifications for the 450 it still says 4 speed though??

Transmission 4-speed w/multi-plate wet clutch

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2006 YZ450F

Key Features:

An all-new light and strong aluminum frame repositions the engine for great mass centralization and fantastic handling.

A special 50th anniversary model and sharp, new styling keeps the YZ450F at the front of the pack in the looks department, too.

New, five-speed gearbox squeezes even more performance from the mighty five-titanium-valved 450.

Upgraded suspension components at both ends, including a titanium shock spring which provide great handling and ride comfort.

Trick new bits include a light, strong ProTaper aluminum handlebar in adjustable clamps and a trick new exhaust system.

New for 2006:

New, close-ratio five-speed transmission provides more performance in a wider range of riding environments.

All-new aluminum frame is an extensively tested combination of castings, extrusions, forgings and aluminum tubing — all carefully put together to produce a chassis that takes legendary YZ handling to the next level.

Speed-Sensitive System 48mm Kayaba fork move the TCV (transfer control valves) above the fork springs, so that damping force is now controlled by piston speed; that prevents mid-stroke damping force changes, for a smoother, more precise ride.

Titanium-sprung four-way adjustable rear shock rod diameter is 2mm bigger. New, Kashima coating reduces friction for fantastic compliance and great handling.

Carburetion and exhaust changes let the 449cc four-stroke breathe free for even greater power production.

Changing the cylinder head angle and moving the dry sump oil tank inside the front of the crankcase improves overall balance and handling and eliminates external oil lines.

Redesigned piston, crankshaft and connecting rod for increased performance and durability. An oil jet now directs oil at the piston bottom for increased cooling.

Engine:

449cc five-valve DOHC liquid-cooled beast is still the most powerful thing in 250-Class MX.

39mm Keihin FCR flat-slide carburetor with throttle position sensor (TPS) and leak jet delivers precise fuel/air mixture and instant throttle response.

Revised CDI ignition keeps that amazingly broad and deep powerband hard-hitting, yet controllable.

Lightweight, titanium valves and load-reduced springs are super light, minimizing reciprocating mass for fast-revving, hard-hitting power delivery across the rev range.

Additional weight-saving engine features include: small-design cam chain tensioner and oil pump, aluminum oil hose, all-titanium exhaust header, flange, bracket and heat shield and light CDI ignition unit.

Primary kickstarting with automatic decompression and convenient handlebar-mounted hot start lever ensures easy restarts. A new kickstart lever provides efficient starting, hot or cold.

Kick pinion gear is separate from the primary driven gear for smoother clutch engagement.

Large-capacity radiator provides outstanding cooling efficiency.

Chassis/Suspension:

More weight savings come via two-piece (part aluminum, part plastic) engine protector plates and thin-walled engine guard construction.

Removable aluminum rear subframe constructed of square-section pipe for light weight and easy maintenance.

Lightweight front wheel hub for reduced unsprung weight and increased durability.

Lightweight front and rear brake calipers with aluminum pistons and anti-bubble front master cylinder, 250mm front and 245mm rears discs, deliver strong stopping power with progressive feel.

Premium Dunlop knobbies provide unbeatable, competition-spec traction and great wear.

Lightweight 21-inch front and 19-inch rear Excel rims are exceptionally durable and reduce unsprung weight.

Additional Features:

“Gripper” style seat cover offers excellent feel and control.

Wide, cleated, folding titanium footpegs are light, strong, and provide excellent comfort, grip and ground clearance.

Trick, works-style clutch lever features oversize barrel adjuster for easy, on-the-fly adjustability of lever/cable play.

Cleated rear brake lever and folding shift lever tip offer superb grip and excellent durability.

Repackable exhaust silencer.

Durable, comfortable handlebar grips.

Stainless steel clutch cable for longer life.

*Price and specifications subject to change without notice.

Please read your Owner's Manual and all labels before operation.

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