Forged piston kit set of four from the Pro Series with a +3.00 mm oversize (84.00 mm bore) and high-compression crown, engineered for performance applications. The elliptical design promotes uniform load distribution during thermal expansion, aiding durability under high-demand conditions. Manufactured in Germany.

Features

• Set of four forged pistons (Pro Series)


• +3.00 mm oversized bore (84.00 mm, actual piston diameter 83.95 mm)


• Three-ring configuration


• Elliptical design for uniform bearing surface and improved thrust load distribution


• Enhanced heat dissipation for thermal stability


• Manufactured in Germany

Specifications

• Bore size: 84.00 mm (actual piston size 83.95 mm)


• Oversize: +3.00 mm


• Displacement range: 1299 / 1395 / 1429 cm³


• Stroke: 63.00 mm


• Clearance: 0.05 mm


• Compression ratio (Wössner): 13.50:1


• OEM compression ratio (reference): 11.00:1


• Dome volume: −2.45 cm³


• Compression height: 25.10 mm

Cross-Reference OEM Part Numbers

• Piston kit reference: K8730D300-4


• Clip: CW20


• Piston pin: WP029


• Replacement ring set: RIK84.00B

Vehicle Fitments

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  Suzuki Hayabusa 1999–2007