Wiseco Forged Piston Kit Mazda MX-5 / Miata NA / NB 1.8 BP 84 mm 8.5:1

Wiseco Forged Pistons Mazda MX-5 / Miata NA / NB 1.8 BP

Forged 2618 aluminum pistons built for high-performance Mazda BP engines.
This Wiseco forged piston kit is designed for Mazda's 1.8 BP engine, providing exceptional strength and durability for high-performance naturally aspirated and turbocharged builds. Manufactured from premium 2618 forged aluminum, these pistons are engineered to withstand extreme cylinder pressures and temperatures.

Construction and technology

• Forged 2618 aluminum construction
• 84 mm (+1 mm) piston diameter
• 8.5:1 compression ratio
• 20 mm wrist pin diameter
• 30.50 mm compression height
• -4.0 cc dome volume
• 301 g nominal piston weight
• Wiseco 8350XX piston ring set included

Designed for stock-style engine builds with a 0.50 mm overbore, these pistons combine lightweight construction with outstanding durability. The forged 2618 alloy is widely used in motorsport applications thanks to its excellent resistance to heat and heavy loads.

Why choose Wiseco?

• forged 2618 aluminum construction
• ideal for turbocharged and high-performance engine builds
• excellent resistance to thermal and mechanical stress
• lightweight design for improved engine response
• manufactured in the USA

Compatibility

This kit is designed for the Mazda MX-5 / Miata NA (1994–1998) and NB (1998–2005) equipped with the 1.8 BP engine.

Wiseco is one of the world's leading manufacturers of forged engine components. These 2618 forged pistons provide the strength and reliability required for demanding street, track and motorsport applications.

*In 90% of cases our products are available from stock. Depending on manufacturer availability, delivery may take up to 4 weeks.