When it comes to upgrading your engine’s internals, connecting rods are a critical piece of the puzzle. Boostline rods are engineered for serious performance, but choosing between their I-beam and H-beam designs and deciding on the right fasteners depends on your build goals.
If you are seeking Boostline Connecting Rods, check out our brand page here!
I-Beam vs H-Beam: What’s the Difference?
Both rod styles are forged for strength, but they’re optimised for different types of stress and usage:
|
Feature |
I-Beam Rods |
H-Beam Rods |
|---|---|---|
|
Shape |
Straight central spine, like a capital “I” |
Wider cross-section, resembles an “H” |
|
Strength Profile |
Excellent tensile strength, ideal for high RPM |
Superior rigidity under compressive loads |
|
Weight |
Typically lighter |
Slightly heavier, but more robust |
|
Best For |
High-revving NA builds, track cars |
Turbocharged or supercharged setups |
Why choose I-beam?
If you're chasing high RPMs in a naturally aspirated build, think circuit racing or time attack, I-beam rods offer the strength you need without unnecessary weight. They’re ideal for engines that live in the upper rev range.
Why choose H-beam?
For forced induction builds or engines making big torque down low, H-beam rods provide extra rigidity. They’re better suited to handling the compressive forces that come with boost and aggressive tuning.
ARP 625+ vs ARP 2000 Fasteners: What’s the Difference?
Boostline rods come with premium ARP fasteners, but there are two options depending on your power goals:
|
Fastener Type |
Tensile Strength |
Ideal For |
Notes |
|---|---|---|---|
|
ARP 2000 |
~220,000 psi |
Builds up to ~1,000 hp |
Excellent value, proven reliability |
|
ARP 625+ |
~260,000 psi |
Extreme builds, high boost, high RPM |
Aerospace-grade alloy, maximum strength |
Why choose ARP 2000?
Perfect for most street and track builds. If you're running moderate boost or naturally aspirated power, ARP 2000 bolts offer more than enough headroom.
Why choose ARP 625+?
If you're pushing the envelope with big boost, high RPM, or chasing four-digit horsepower, ARP 625+ fasteners are the insurance policy your engine deserves. They’re built to handle extreme stress without compromise.