BoostLine connecting rods are designed and built for the stressful demands of high-powered, forced induction and nitrous engines. Whether you’re building a boosted EJ20 or EJ25, BoostLine connecting rods have been proven in four-cylinder engines confidently pushing 1,000HP+. BoostLine rods are forged from premium 4340 steel and utilize a patented, three-pocket design, maximizing strength while minimizing rotating weight. This revolutionary design dramatically improves each rods’ big-end stability under tensile loads and provides a 60% improvement in bending strength and 20% stress reduction in tension compared to H-beam designs, benefits crucial to durability in four-digit-horsepower engines. Each rod is equipped standard with industry leading ARP hardware and is subject to a 26-point, CMM inspection with all critical dimensions provided via an inspection card included with every set of rods. BoostLine connecting rods are the complete package for every performance build, from powerful projects to all-out race cars.

Because of the high cylinder pressures associated with big boost, BoostLine engineers focused on making the rod more resistant to bending under massive power loads. 

• Purpose-Built For Boost High Boost and Nitrous Subaru EJ20/25 Turbo Applications
• Forged From Ultra-Strong 4340 Steel
• Patented Three-Pocket Design
• Capable of 1000+ HP
• 3/8 x 1.600 in. ARP 2000 Fasteners
• High Quality APMCO Bronze Pin Bushing
• 26 Point Detailed CMM Inspection Report Included

Part Number: SB5137-905