BoostLine BM5834-866 Connecting Rods 5.834in for BMW Toyota B58B30 ARP2000

Vehicle Fitment

• BMW B58B30 3.0L Turbo I6 (340i, 440i, M240i, Z4 M40i, X3 M40i, and other B58-equipped models)
• Toyota GR Supra (A90/A91), B58B30 3.0L Turbo I6

Fitment Notes

• Sold as a complete set of 6 connecting rods
• May require additional block clearance - confirm with your machine shop before installation
• ARP2000 fasteners included; upgraded ARP625+ fasteners available as the "+" variant (BM5834-866+)

Features

• Patented three-pocket design maximizes strength while minimizing rotating weight
• 60% improvement in bending strength and 20% stress reduction in tension versus H-beam designs
• Forged from ultra-strong 4340 steel for extreme durability
• Proven in the lab and on the track in 1,500HP+ five- and six-cylinder engines
• High-quality APMCO bronze pin bushing for reliable, long-term performance
• Floating wrist pin design
• Every rod undergoes a 26-point CMM inspection with included inspection report
• Individually vacuum-wrapped and foam-separated for shipping protection

Specifications

• Length (center-to-center): 5.834"
• Beam style: I-beam
• Material: Forged 4340 steel
• Pin bore diameter: 0.866"
• Rod journal diameter: 1.968"
• Big end bore diameter: 2.1106"
• Bolts: ARP2000, 3/8", 200,000 psi tensile
• Advertised rating: 1,500 hp, 10,000 rpm

Included Components

• 6x BoostLine I-Beam Connecting Rods
• ARP2000 Rod Bolts
• Inspection Report

Product Description

The BoostLine BM5834-866 is a set of six I-beam connecting rods built for the BMW/Toyota B58B30 engine, found in the GR Supra and multiple BMW models. Forged from 4340 steel with BoostLine's patented three-pocket design, they deliver a 60% improvement in bending strength and 20% stress reduction in tension over traditional H-beam rods - critical for the big-end stability needed in four-digit-horsepower builds.

Proven in 1,500HP+ five- and six-cylinder engines from the 2JZ to EcoBoost 3.5Ls, each rod ships standard with ARP2000 fasteners and passes a 26-point CMM inspection, with a detailed report included. Built for the demands of serious forced induction and nitrous applications, and packaged with vacuum-wrap protection for safe shipping.