QSC BMW pistons are made of aluminum. The surface of the pistons is CNC machined for smooth operation. The structure of pistons is designed to enhance the heat-resistance and durability. This set includes 4x 90mm pistons, and 4x pins/clips. **
Application
- BMW 114 2002tii Euro Coupe (114/M10) 71-75
- BMW E12 5-Series 520i Sedan (E12/M10) 72-75
Specification
- Piston material: Aluminum Alloy
- Compression ratio: 10:1
- Size: 90mm
- Suggested piston rings: Hastings part# 2c4214040
Features Highlights
- Smooth operation
- Heat resistant and durable
- Easy installation
**Professional installation is recommended
**A break-in period of 500 miles is required after the installation
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