2023-2026 Yamaha YZ450F DEF Racing 99MM 15.1 High Compression Piston Kit

Description

Dynamic Racing 99MM Big Bore 15.1:1 High Compression Piston Kit for your Yamaha YZ450F. This high-quality piston is engineered to deliver remarkable increases in power.

Key Features:

• Larger Bore: 99mm (+2mm) larger bore piston making your machine nearly 470cc.
• Performance: Significant performance gains with this bigger bore and high compression.
• DLC Coated Pin: Offers reduced friction, increased performance longer service life.
• Valve Pockets: Allows larger valves up to a 33mm exhaust valve and a 40mm intake valve.
• Optimal Compatibility: For maximum performance, we recommend pairing the piston kit with our Vortex ECU and custom tuned maps, allowing you to unlock the full potential of your engine.
• High-Quality Manufacturing: Designed by us and manufactured by JE Pistons from premium 2618 aluminum, this piston offers excellent strength and durability for high-performance applications.

Kit Includes:

• 15.1:1 JE Piston
• DLC Coated Wrist Pin
• USA Made Ring Pack
• Circlips
• 99mm Head Gasket

Parts Not Included:

• 99mm Bore Cylinder Required
• 99mm Bore Cylinder – Core exchange available for $375. Please call or email.