YZ523F Stealth Big Bore/Stroker

Motorcycles Yamaha YZ491F

Please call to order 608-842-0680

Availability: In stock.



Quick Overview

YZ523F STEALTH Specifications:
Fits 2003-2009 YZ/WR 450F


Choose option:

Installed and Blueprinted: $ 500.00

We modify your cylinder


Product Description

Bore: Yes

Stroke: Yes

Actual Displacement = 523.44cc

Engine Modifications Included:

Cylinder: OEM Cylinder with “Ice Cube Style” forged sleeve plated with Ceramic Nickel Bore coating

Fuel Required: 91 – 110 octane – Options Available

Piston/Crankshaft: Wiseco Piston – Max Power Extreme Coated / OEM Crank Stroked and balanced

Head: No modification required

Crankcase: No modification required


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