Kawasaki EX400/500cc Head gasket .010 High Compression Stock Bore gasket 2018/Current

Kawasaki EX400/500 Head gasket .010

Unlock serious power with Spears Racing’s Kawasaki EX400/500 Head gasket .010 precision-engineered stainless steel head gasket, custom-built to our exact specifications. By reducing thickness compared to the multi-layer OEM gasket, this single-layer design raises compression from stock to over 12.1:1 — delivering measurable gains in torque and rear-wheel horsepower.

Race-Proven Performance

• Used by competitors worldwide in major series including BSB Junior Supersport, MotoAmerica, WorldSSP300, and CSBK Lightweight Sportbike Championship
• Trusted by multiple championship-winning teams and riders
• Racing-use only

Superior Construction

• Single-layer stainless steel (vs. multi-layer OEM) for greater strength, superior rebound characteristics, and excellent corrosion resistance
• Embossed and coated on both sides to seal reliably under extreme loads, imperfect surfaces, and harsh racing conditions
• Heat resistant to 250°C / 482°F

Fitment

Kawasaki EX400/500 Head gasket .010 Fits all Kawasaki Ninja 400 and 500 models from 2018 to current.

Spears Racing has spent decades developing performance parts specifically for the “little commuter” sportbike platform. Every design undergoes rigorous in-house engineering, testing, and refinement so you get race-ready components that exceed expectations.

Made in the USA.