Wiseco LS6125-927L19 BoostLine Connecting Rod Set 6.125" GM LS/Gen V LT1 8-Cylinder

The "L19" designation indicates these rods are upgraded with premium ARP L19 fasteners (rated at 260,000–280,000 psi) in place of the standard ARP2000 bolts, making them ideal for the most extreme power-adder builds.

Unlike traditional H-beam or I-beam connecting rods, Wiseco's patent-pending 3-pocket beam architecture merges the best attributes of both designs — the mass efficiency of an H-beam with the bending rigidity of an I-beam. The result is a rod that delivers 60% more bending strength than a conventional H-beam rod while remaining competitively lightweight at approximately 692 grams per rod.

Key Features:

• Rod Length: 6.125" center-to-center
• Big End Bore: 2.100"
• Pin Bore: 0.927"
• Material: Premium forged 4340 steel
• Beam Style: Patented 3-pocket (combines H-beam and I-beam geometry)
• Fasteners: ARP L19 high-strength cap screws (260,000–280,000 psi)
• Small End Bushing: High-quality Ampco bushing material
• Pin Clearance: 0.0009"–0.0011" (engine builder adjustable)
• Heat-treated, shot-peened, and finish-machined in the USA
• Individually inspected via Coordinate Measuring Machine (CMM) for tight tolerance matching
• Each rod includes a Wiseco quality inspection report
• Rods are individually vacuum-wrapped and foam-separated for shipping protection

Every BoostLine rod is designed, finished, and inspected in the USA. Whether you're building a street/strip combo or an all-out 2,000+ HP competition engine, the LS6125-927L19 BoostLine rods provide the durability and precision your build demands.