K1 Toyota Supra / BMW B58 Connecting Rods - Engine Builder Magazine

K1 Toyota Supra / BMW B58 Connecting Rods

Forged from 4340 steel and machined within precise tolerances, these connecting rods for the B58 boast a winning combination of features.

K1 has expanded its lineup of race-ready connecting rods with the latest H-beam connecting rod for the Toyota Supra / BMW B58 engine. As part of Supra’s relaunch, this engine has become a popular build platform, with high-boost and big HP builds calling for increased connecting rod strength.

Forged from 4340 steel and machined within precise tolerances, these connecting rods for the B58 boast a winning combination of features, including:
• Forged 4340 steel material provides strength and reliability
• Designed and developed by in-house engineering team through work with engine builders and racers
• Shot peening surface treatment improves fatigue life for long and reliable performance
• Highly reputable ARP 2000 series fasteners included
• H-beam design provides proven strength

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