CYLINDER FULL KIT +5.60mm BIG BORE 72.00mm YAMAHA 2003 - 2025 YZ 2T 250 ATHENA P400485100042

Athena Big Bore Cylinder Kit for Yamaha YZ 250 2T - 293cc

Upgrade your Yamaha YZ 250 2T with the Athena Big Bore Cylinder Kit, engineered in Italy for enhanced performance. This comprehensive kit increases your engine's displacement to 293cc, featuring a 72.00mm bore diameter which is a +5.60mm increase over stock.

The high-quality aluminum cylinder is treated with a durable nickel-silicon coating, providing exceptional wear resistance for longevity. Designed for a straightforward installation, this kit does not require any modifications to your engine's crankcase.

Key Features:

• Increased Displacement: Boosts your engine to 293cc for more power.
• Oversized Bore: Features a 72.00mm bore diameter (+5.60mm over stock).
• High Compression: Achieves a 15.0:1 compression ratio.
• Durable Coating: Nickel-silicon coated cylinder for superior wear resistance.
• Complete Kit: Includes all necessary components for installation.
• Direct Fit: No modifications needed for the engine crankcase.

Specifications:

• Bore Diameter: 72.00mm
• Bore Gain: +5.6mm
• Compression Ratio: 15.0:1
• Displacement: 293cc
• Net Weight: 3.50 kg

Included Components:

• Aluminum Cylinder
• Cylinder Head
• Complete Piston (with pin and rings)
• Exhaust Valve Kit
• Gasket Kit