2007 YAMAHAS

YZ450F

New for 2007:

Replacing the upper cast triple clamp with a light and strong forging, slightly reducing steering head rigidity, and the use of lighter outer fork tubes; lighter wheel rims and light wave-type brake rotors add up to super-accurate, super-responsive steering.

Increasing the length of the rear shock by 1.5mm further sharpens handling. Replacing steel damping adjusters with aluminum ones removes even more weight from the four-way adjustable, titanium-sprung rear suspension unit.

A more rigid clutch pressure plate helps put power to the ground and dissipates heat more efficiently, especially during partial-clutch operation. Shorter lever stroke with 12-percent reduced effort means instant response.

New, titanium exhaust pipe fattens low- and mid-range power while simultaneously adhering to 2007 AMA noise regulations.

This year’s ProTaper aluminum handlebar bend raises the grips 8mm for an expanded cockpit. Forged bar clamps reduce weight for superior handling.

YZ250F

New for 2007:

Carburetion, ignition and other modifications provide more top-end performance and over-rev ability.

The engine mounting angle has been changed; rotating the cylinder head rearward changes the balance of the machine for compactness and sharp handling. Smaller engine mounting bolts and other things add up to 2.5 pounds less weight.

Moving the steering head 3mm rearward makes the bike super-nimble turning into tight corners and carves tight lines.

Replacing the upper cast triple clamp with a light and strong forging, slightly reducing steering head rigidity, and the use of lighter outer fork tubes, lighter wheel rims and light wave-type brake rotors add up to super-accurate, super-responsive steering.

A lighter front brake caliper and master cylinder with smaller pistons saves weight; a new front brake lever gives excellent feel. The result is outstanding braking power and less unsprung front-end weight.

Increasing the length of the rear shock by 1.5mm further sharpens handling. Replacing steel damping adjusters with aluminum ones removes more weight from the four-way adjustable, titanium-sprung rear suspension unit.

New exhaust pipe works with engine changes to boost top-end response while adhering to 2007 AMA noise regulations.

This year’s ProTaper aluminum handlebar bend raises the grips 8mm for an expanded cockpit. Forged bar clamps reduce weight for superior handling.

YZ250

New for 2007:

Modifying thickness of both inner and outer fork tubes and revising damping settings provides fantastic bump absorption and comfort while shaving weight.

Lightening the rear shock with aluminum components takes off more weight, and revised settings complement the ones in the fork.

A light and strong ProTaper aluminum handlebar in adjustable mounts adds comfort and control.

A new jet needle in the 38mm Keihin PWK carburetor boosts bottom-end and mid-range response.

Use of lighter, box-head bolts throughout the chassis eases maintenance while reducing weight and increasing performance.

YZ125

New for 2007:

Modifying the thickness of both inner and outer fork tubes and revising damping settings provides fantastic bump absorption and comfort while shaving weight.

Lightening the rear shock with aluminum components takes off more weight, and revised settings complement the ones in the fork.

A light and strong ProTaper aluminum handlebar in adjustable clamps adds comfort and control.

Revisions to the ignition map and silencer boost low-end and mid-range performance.

Platinum spark plug is super-durable and puts out fat sparks.

Use of lighter, box-head bolts throughout the chassis eases maintenance while reducing weight for increased performance

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