Skunk2’s Alpha Series Connecting Rods for the FA20 engine platform deliver unmatched strength, durability, and performance in forced induction or high-rev naturally aspirated applications. Manufactured from forged 4340 chromoly steel and CNC-machined to precise tolerances, these rods feature a robust H-beam design and ARP2000 3/8” rod bolts rated at 220,000 psi for reliable performance under extreme conditions.

Designed for FA20-powered platforms such as the Scion FR-S, Subaru BRZ/WRX/Forester, and Toyota 86, Alpha rods are built to withstand high cylinder pressures and aggressive tuning. They offer excellent strength-to-weight characteristics and are widely trusted by engine builders worldwide for both street and motorsport use.

Key Features:

• Forged 4340 chromoly steel construction for extreme durability

• H-beam design for optimal strength and weight balance

• CNC-machined for precision and performance consistency

• Heat-treated, tempered, and shot-peened for enhanced fatigue resistance

• Includes 3/8” ARP2000 rod bolts rated at 220,000 psi

• Designed for high-RPM and high-horsepower FA20 builds

• Sold as a matched set of four rods

Connecting Rod Specifications:

• Beam Type: H-Beam

• Weight: 527g per rod

• Material: Forged 4340 Chromoly Steel

• Center-to-Center Length: 129.39mm / 5.094"

• Small End Diameter: 22mm / 0.866"

• Small End Width: 21mm / 0.843"

• Big End Bore: 53mm / 2.086"

• Big End Width: 21mm / 0.843"

• Rod Bolts: 3/8" ARP2000

• Reciprocating Weight: 125g

• Rotating Weight: 394g

Vehicle Fitment:
Compatible with FA20-equipped vehicles including:

• Scion FA20 / FR-S (2013–2016)

• Subaru FA20 / BRZ (2013–2019)

• Subaru Forester (2014–2018)

• Subaru WRX (2015–2020)

• Toyota FA20 / 86 (2017–2019)

Included:

• (4) Alpha Series Connecting Rods

• (8) ARP2000 3/8" Rod Bolts