ZRP forged pistons for the BMW 2.5L M52 Single Vanos engine. According to the supplier’s data, versions with a bore of 84.00 mm, 84.50 mm or 85.00 mm are listed.
The specification lists compression ratios of 8.3:1 and 10.5:1, as well as piston dish volumes of −12.50 cm³, −13.20 cm³ and −13.90 cm³. Before choosing, check the correct combination of bore, compression ratio and piston dish volume for the specific engine.
- Engine: BMW 2.5L M52 Single Vanos
- Bore: 84.00 mm, 84.50 mm or 85.00 mm
- Listed compression ratios: 8.3:1 and 10.5:1
- Listed piston dish volumes: −12.50 cm³, −13.20 cm³ and −13.90 cm³
Suitable for: BMW 3 III (E36) / IV (E46), BMW 5 IV (E39).

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