ZRP BMW 3.0L N55 I-Beam Connecting Rods
Looking for forged BMW N55 connecting rods you can trust for high boost and hard use on road, track, or drag builds? ZRP I-beam con rods for the 3.0L BMW N55 deliver race-proven strength, precision, and reliability. Built from premium 4340 high tensile steel with an optimised I-beam design, these forged conrods are engineered for extreme durability and consistent performance in tuned N55 engines. We have installed these in-house at Nforcd on N55 builds and our customers have been delighted with the fitment quality and long-term reliability.
These ZRP N55 rods feature a straight cut pin end, designed to be used with aftermarket pistons for maximum durability in high power applications. Each set is weight matched and supplied with ARP 2000 rod bolts and ARP moly, with an optional ARP L19 upgrade available. If you are searching for BMW N55 forged rods, I-beam connecting rods, conrods for big turbo N55 builds, or an N55 engine build upgrade that handles serious power, this is the go-to choice.
Why choose ZRP N55 I-Beam Connecting Rods
- Forged 4340 steel I-beam design for outstanding rigidity and strength
- Two-piece forging, shot peened, and multi-stage heat treated for fatigue life and dimensional stability
- AMPCO 18 bushings with a radial oil groove for excellent wear resistance and lubrication
- Precision CNC machining to tolerances as tight as 0.0002 inch
- Centre-to-centre maintained within 0.001 inch for precise geometry
- Magnaflux inspected and FEA analysed to ensure material consistency and strength
- Weight matched to ±1 gram for smooth, balanced operation
- Double ribbed caps for extra support and strength under load
- Includes ARP 2000 fasteners rated at 220,000 psi with optional ARP L19 upgrade
Additional machining highlights
- Straight cut pin end suitable only for aftermarket pistons
- Dowel sleeves for perfect cap alignment and repeatable assembly
- Lipped cap relief for improved big-end integrity in extreme use
- Grooves in thrust face for weight reduction
Specifications
- Engine: BMW 3.0L N55
- Configuration: I-beam forged connecting rods
- Length: 144.35 mm
- Wrist pin diameter: 22.00 mm
- Housing bore: 53.635 mm
- Big end width: 20.88 mm
- Weight: 487 g per rod
- Bolt size: 3/8 inch
- Fasteners: ARP 2000 included, ARP L19 optional upgrade
- Set: 6 rods
- Footnote: Non-tapered straight pin end
Compatibility
Suitable for BMW N55 engines. Straight cut pin end requires aftermarket pistons.
What you get
- 6 x ZRP forged I-beam connecting rods
- ARP 2000 cap fasteners with ARP moly
- Full fitting instructions
Fitting and support
Professional installation is recommended. For fitting by Nforcd in Warwickshire, request a quote at Sales@nforcd.com.
Part number
R-BMW-019-I
Keywords to help you find the right part
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