Cilinder kit ATHENA P400485100107 standard bore d97 mm, 450 cc with gaskets

Restore your engine’s original performance with the Athena Standard Bore Cylinder Kit for Yamaha YZF 450 and WRF 450, engineered for maximum reliability, durability, and consistent performance in demanding off-road conditions.

Designed following OEM Yamaha specifications, this cylinder and piston kit is the ideal solution for complete engine rebuilds, maintaining original geometry, tolerances, and thermal behavior.

Complete Yamaha 450 4-Stroke Cylinder and Piston Kit

This Athena top-end kit includes premium components developed for racing and heavy-duty applications:

• High-silicon aluminum cylinder, featuring advanced plating for superior wear resistance, optimal heat dissipation, and dimensional stability.
• High-performance forged piston, CNC-machined for tight tolerances and coated with molybdenum disulfide to reduce friction, noise, and wear under extreme conditions.
• Heavy-duty wrist pin and circlips, designed for maximum mechanical strength and long service life.
• Complete gasket kit, including MLS (Multi-Layer Steel) stainless steel head gasket, laser-cut for optimal sealing even under high thermal and mechanical stress.

OEM Fitment and Plug-and-Play Installation

The Athena Yamaha 450 4T cylinder kit is designed for full OEM compatibility:

• No modifications required
• Direct plug-and-play installation
• Perfect interchangeability with OEM components

Ideal for professional workshops, engine builders, and riders looking for a reliable rebuild solution.

Proven Reliability and Racing Performance

Backed by Athena’s racing experience and extensive testing under extreme conditions, this kit ensures:

• Consistent thermal stability
• Reduced internal friction
• Extended component lifespan
• Reliable performance over time

The perfect choice to keep your Yamaha 450 4-stroke engine performing at its best.

NOTES: Race Use Only Product. Not intended for street use.