Application For BMW E30 M3 S14B23 1988 - 1991 L4 Dimensions Center to center length: 144mm Big end diameter: 52mm Small end diameter: 22mm Big end width: 23.9mm Small end width: 23.9mm Specification - TÜV PRODUCT TEST AND TÜV ISO 9001 CERTIFIED - Type: Forged 4340 aircraft chrome moly quality steel for racing - H-beam Conrods Quantity:1 set of 4 pieces - Bolts: Including Genuine ARP 2000 bolts - Note: Extra cost for upgrading to ARP L19 bolts - Bolts Size: 3/8" ARP 2000 bolts - Tolerance: Balanced to +/- 1 gram in set - Piston Bolt Hole: +-4/1000mm - Power: 600hp ~ 800PS per set - Strength of the fastening (PSI): 220,000/230,000 PSI Torque: 48ft ≈ 65 NM - Top acceleration: 9000rpm - Warranty: 2 years Feature - Forged SAE 4340 Chrome Moly Steel for the highest strength and durability, dedicated for Racing - Designed and processed by CNC machine. - All big and small ends are finished with SUNNEN honing machine - Precision alignment sleeves positively locate the rod cap, maintaining big