ZRP HD Series forged connecting rods are designed for BMW M3 S14B23 and S14B25 engines. The I-beam design is suitable for engine rebuilds or upgrades.
The connecting rods use ARP2000 bolts and are listed as Standard Series.
- For 2.3L M3 S14 and 2.5L M3 S14 engines
- I-beam connecting rod design
- ARP2000 bolts
- HD Series design
Suitable for: BMW M3 VI (F30/F31/F34/F80).

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