BMW N55B30 S55B30 forged connecting rods for forged pistons

Forged connecting rod kits

ZRP

and

MANLEY

for N55B30 and S55B30 engines consist of

6 connecting rods

and delivered with the

ARP connecting rod screws

.

Find the assembly instructions in the tab "

Download

"

above

.

Find below (click on the image) the forged pistons and tri-metal connecting rod bearings for BMW N55 / S55 engine:

Technical characteristics

Connecting rod type: I

Center distance: 144.35mm

Head diameter: 53.635mm

Head width: 20.88mm

Piston pin diameter: 22.00mm

Connecting rod screws: ARP2000 or L19

Screw thread: 3/8"

Weight: 487gr

Type of steel: 4340

Maximum admissible power: 1050hp (ARP2000) / 1200hp (L19)

NOT COMPATIBLE WITH ORIGINAL PISTONS: non-beveled connecting rod end

The ZRP brand is the subsidiary of DRAKOS ENGEERING renowned for its experience in designing high-performance mechanical parts. ZRP specializes exclusively in forged engine parts and has designed forged connecting rods in high-strength 4340 steel in order to accept high boosts on your engine and connecting rod screws ARP2000 for large increases in engine speed

The head of the ZRP forged connecting rods is equipped with a ring machined from patented AMPCO 18 hot extruded cupro-aluminum alloy before being ground to ensure that the oil film is maintained with your piston pin. The design of this forged ZRP connecting rod gives it exceptional resistance to significant increases in power and torque by high boost pressures. extreme uses as we encounter with our customers whom we equip for their preparation for Drift forged engines and Run Dragster forged engines

.

Technical characteristics connecting rods H

Connecting rod type: H

Center distance: 144.35mm

Head diameter: 53.594mm

Width of

head

: 20.90mm

Piston pin diameter: 22.00mm

Connecting rod screws: ARP 2000

Screw thread: 3/8"

Weight: 565gr

Type of steel: 4340

Maximum admissible power: 800hp

Created in 1966, Manley Performance Products offers a wide range of internal engine parts for performance, such as forged pistons, forged connecting rods and even forged crankshafts. Whether H or I, Manley forged connecting rods are made from 4340 aircraft grade steel and come with ARP connecting rod bolts.

H-shaped connecting rods:

These are connecting rods forged from 4340 steel which then receive a heat treatment and are shot peened to obtain a better surface finish.