BMW 3.0 N54B30 N55B30 S55B30 ACL Race connecting rod bearings 6B1584HX-STD

Product detailed specification
Manufacturer: FCP Engineering
Model: FCPRHB14553622
Profile: H-beam
C to C: 145mm
Big end diameter: 53.6mm
Pin diameter: 22mm
Quantity: 6 pcs., 12 pcs. ARP2000 3/8" bolts
Made of: forged steel 4340 EN24er
Advertised horsepower rating: 1000HP (6 cylinder)
Advertised RPM rating: 9000RPM
BMW E90, E91, E92, E93, E82, E88, E89, X6, Z4, F01 (N54B30)

JE's patented Perfect Skirt coating makes piston slap, false knock, and cold-start wear a thing of the past.
For the first time ever, 2618-alloy pistons can be installed with piston-to-wall clearances near that of an OEM piston!

Spring data:
Seat pressure - 75lbs @ 36.50mm
Open (lift) pressure - 155lbs @ 10.00mm
Spring coil bind - 23.20mm
Max lift - 12mm
Rate - 8 lbs./mm
Wide end spring outer diameter - 24.40mm
Wide end spring inner diameter - 17.60mm
Narrow end spring outer diameter - 21.00mm
Narrow end spring inner diameter - 14.30mm

Kit includes:
Single springs - 24 pcs. SPR-FE20N54-BE
Rretainers - 12 pcs. RET-BMN54-TI (5mm)
Retainers - 12 pcs. RET-BMN54-TE (6mm)