JE forged piston set for the BMW S52B32 (USA-spec) 3.2L inline-six found in the 1996-1999 E36 M3. Bored to 87.0mm (+0.6mm oversize) with an 11.5:1 compression ratio for high-compression naturally aspirated and boosted builds. Forged from 2618 aluminum in the USA with JE's Forged Side Relief (FSR) design; set of 6 includes wrist pins, locks, and JE Pro Seal premium rings.
| Engine | BMW S52B32US 3.2L (E36 M3) |
| Bore | 87.0mm (+0.6mm oversize) |
| Compression Ratio | 11.5:1 |
| Material | Forged 2618 aluminum (FSR) |
| Quantity | Set of 6 (with pins, locks & Pro Seal rings) |
| Part Number | 297173 |
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