Description
If you’re building or refreshing a Small Block Chevy engine, piston selection directly impacts compression ratio, combustion efficiency, and overall reliability. The KB134.040 delivers the precision engineering and material quality needed to withstand high-rpm demands while maintaining consistent performance across extended engine operation. These hypereutectic pistons are engineered to resist thermal stress and deformation—critical factors whether you’re tuning for street performance or track duty.
Technical Specifications:
- Bore size: 4.040″
- Compression height: -7cc
- Piston design: Flat top
- Material: Hypereutectic aluminum
- Ring grooves: 5/64 x 5/64 x 3/16″
- Quantity: 8 pistons
- Application: Small Block Chevy
- Fitment: Vehicle-specific bore
- Installation: Professional assembly recommended
- Series: KB (KB134.040 MPN)









