CP Pistons SC7540-4 Forged Pistons for 1999-2005 Mazda Miata BP 1.8L

Vehicle Fitment

• 1999-2005 Mazda Miata (BP, 1.8L I4 DOHC 16v)

Fitment Notes

• Compatible with all BP-series 1.8L engines (BP, BP-VE, BP-ZE, BP-ZET, BPT)
• Not suitable for 1.6L B6 engine variants

Features

• Precision-forged 2618 aluminum alloy construction
• 83mm (3.268") bore size for stock displacement
• 9.0:1 compression ratio optimized for turbo applications
• 1.3cc dome volume for improved combustion efficiency
• 1.208" (30.68mm) compression height for correct deck clearance
• 20mm wrist pin diameter for compatibility with stock or aftermarket rods
• Set includes four pistons and matching rings
• Designed for high-performance applications including forced induction

Specifications

• Bore: 83mm (3.268")
• Compression Ratio: 9.0:1
• Compression Height: 1.208" (30.68mm)
• Wrist Pin Diameter: 20mm
• Piston Weight: 310g (advertised)
• Material: 2618 Forged Aluminum
• Dome Volume: 1.3cc
• Included Components: 4x Pistons, 4x Wrist Pins, 4x Locks, 4x Rings

Included Components

• 4x CP Pistons SC7540
• 4x Wrist Pins (20mm diameter)
• 4x Locks
• 4x Piston Rings (1.0mm, 1.2mm, 2.8mm sizes)

Product Description

The CP Pistons SC7540-4 is a high-performance piston and ring kit designed specifically for the 1999-2005 Mazda Miata equipped with the BP-series 1.8L engine. Crafted from 2618 forged aluminum, these pistons offer exceptional strength and durability, making them ideal for both naturally aspirated and forced induction applications.

With a bore size of 83mm and a compression ratio of 9.0:1, the SC7540-4 pistons provide a solid foundation for building a high-output engine. The 1.3cc dome volume enhances combustion efficiency, while the 1.208" compression height ensures proper deck clearance. The included 20mm wrist pins are compatible with stock or aftermarket connecting rods, offering flexibility in your build.

This kit includes four pistons, wrist pins, locks, and rings, providing all the necessary components for a complete piston replacement. Whether you're rebuilding your engine or upgrading for increased performance, the CP Pistons SC7540-4 kit delivers the quality and reliability you need.