Connecting Rod Bolts

Connecting Rod Bolts: the fastener that decides how much boost your bottom end survives

The connecting rod bolts are the two fasteners that clamp each rod cap to the rod beam around the crank journal. Every combustion event tries to stretch those bolts and pull the cap away from the rod. On a stock or lightly modified engine the factory bolts cope, but once you add boost, nitrous or serious rpm, the bolt is usually the first thing to let go - and when it does, the rod exits the block. That is why builders upgrade the fasteners, and why most performance rods in this category are sold as a matched set with the correct bolts already specced for the assembly.

What ThreePiece stocks

This category runs 227 products across 8 brands. You will find Manley Performance (the largest range here at 81 listings), Eagle, Brian Crower, BoostLine, Skunk2 Racing, ARP, Carrillo and Supertech. Prices currently span from $40 to $3,313 - that is the live range for what is in stock now, not a fixed quote. The low end covers individual fastener hardware; the top end is complete forged rod sets for high-output builds.

Concrete examples: the Manley Coyote 5.0L Pro Series I-Beam rod set, the Manley GT-R VR38DETT Turbo Tuff set, the Brian Crower Powerstroke H-Beam rods with ARP2000 7/16in fasteners, the Carrillo S63B44T0 Pro-H set, the Carrillo Supra/B58 rods and the Brian Crower S58 MOAR I-Beam set with ARP Custom Age 625+ fasteners.

How to choose

The first split is bolt-only hardware versus a complete rod set. If your rods are sound and you only want a stronger fastener, look at the ARP hardware at the lower end of the price range. If the rods themselves are the limit, buy a matched set where the bolt grade is already chosen for the beam design. From there the trade-off is bolt material and beam style: sets listing ARP2000 or ARP Custom Age 625+ fasteners, and I-Beam versus H-Beam construction, are aimed at higher cylinder pressure and rpm and sit further up the price ladder. Diesel builds like the Powerstroke set are their own bracket - heavy-duty beams and larger fasteners.

Fitment

69 of these products carry detailed fitment data spanning model years 1963 to 2024, covering makes including Nissan, Toyota, Acura, Mitsubishi, Subaru, Honda, Ford, Dodge, Mazda, BMW and Audi. Popular applications include the Toyota Supra, Subaru WRX STI, Mitsubishi Lancer Evolution, Ford Mustang, Acura Integra and Nissan 240SX. Always confirm the exact set against your rod length and journal size before ordering.

What else you need

Rebuilding the rotating assembly means you rarely buy rods alone. Pair them with pistons, fresh bearings, and the right sealing set from head gaskets or a full gasket kit. Browse the wider Engine Components section for the rest of the build.

Ordering

All orders ship free, and Affirm and Katapult financing is available. Need help matching a set to your engine? Call fitment support at 813-535-5801 or reach us through contact us.

Connecting Rod Bolts: the fastener that decides how much boost your bottom end survives

The connecting rod bolts are the two fasteners that clamp each rod cap to the rod beam around the crank journal. Every combustion event tries to stretch those bolts and pull the cap away from the rod. On a stock or lightly modified engine the factory bolts cope, but once you add boost, nitrous or serious rpm, the bolt is usually the first thing to let go - and when it does, the rod exits the block. That is why builders upgrade the fasteners, and why most performance rods in this category are sold as a matched set with the correct bolts already specced for the assembly.

What ThreePiece stocks

This category runs 227 products across 8 brands. You will find Manley Performance (the largest range here at 81 listings), Eagle, Brian Crower, BoostLine, Skunk2 Racing, ARP, Carrillo and Supertech. Prices currently span from $40 to $3,313 - that is the live range for what is in stock now, not a fixed quote. The low end covers individual fastener hardware; the top end is complete forged rod sets for high-output builds.

Concrete examples: the Manley Coyote 5.0L Pro Series I-Beam rod set, the Manley GT-R VR38DETT Turbo Tuff set, the Brian Crower Powerstroke H-Beam rods with ARP2000 7/16in fasteners, the Carrillo S63B44T0 Pro-H set, the Carrillo Supra/B58 rods and the Brian Crower S58 MOAR I-Beam set with ARP Custom Age 625+ fasteners.

How to choose

The first split is bolt-only hardware versus a complete rod set. If your rods are sound and you only want a stronger fastener, look at the ARP hardware at the lower end of the price range. If the rods themselves are the limit, buy a matched set where the bolt grade is already chosen for the beam design. From there the trade-off is bolt material and beam style: sets listing ARP2000 or ARP Custom Age 625+ fasteners, and I-Beam versus H-Beam construction, are aimed at higher cylinder pressure and rpm and sit further up the price ladder. Diesel builds like the Powerstroke set are their own bracket - heavy-duty beams and larger fasteners.

Fitment

69 of these products carry detailed fitment data spanning model years 1963 to 2024, covering makes including Nissan, Toyota, Acura, Mitsubishi, Subaru, Honda, Ford, Dodge, Mazda, BMW and Audi. Popular applications include the Toyota Supra, Subaru WRX STI, Mitsubishi Lancer Evolution, Ford Mustang, Acura Integra and Nissan 240SX. Always confirm the exact set against your rod length and journal size before ordering.

What else you need

Rebuilding the rotating assembly means you rarely buy rods alone. Pair them with pistons, fresh bearings, and the right sealing set from head gaskets or a full gasket kit. Browse the wider Engine Components section for the rest of the build.

Ordering

All orders ship free, and Affirm and Katapult financing is available. Need help matching a set to your engine? Call fitment support at 813-535-5801 or reach us through contact us.