Honda Civic 1.8 R18A High Compression Piston Kit (81mm)

Unlock maximum naturally-aspirated power from your R18A with this high-compression forged piston kit, machined to 81.00mm for serious NA builds.

Key Features

• Raised compression ratio squeezes more power out of every naturally-aspirated pull
• Reshaped dome and valve reliefs matched for higher-compression, high-octane tunes
• Popular choice for track and NA race builds chasing maximum output

Vehicle Fitment

• Honda Civic 1.8L (2006–2012)

Not 100% sure this is the right kit for your engine? Send us your engine or chassis number before ordering and we'll confirm fitment.

Technical Specifications

Shipping & Support (New Zealand)

Dispatched from our NZ-based sourcing team, with nationwide shipping and support available if you need help matching this kit to your build.

Note: Bore size should be confirmed against your block's actual measured bore before ordering. Professional installation and machining/measurement by a qualified engine builder is recommended.