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:
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Forged 4340 chromoly steel construction for extreme durability
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H-beam design for optimal strength and weight balance
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CNC-machined for precision and performance consistency
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Heat-treated, tempered, and shot-peened for enhanced fatigue resistance
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Includes 3/8” ARP2000 rod bolts rated at 220,000 psi
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Designed for high-RPM and high-horsepower FA20 builds
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Sold as a matched set of four rods
Connecting Rod Specifications:
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Beam Type: H-Beam
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Weight: 527g per rod
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Material: Forged 4340 Chromoly Steel
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Center-to-Center Length: 129.39mm / 5.094"
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Small End Diameter: 22mm / 0.866"
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Small End Width: 21mm / 0.843"
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Big End Bore: 53mm / 2.086"
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Big End Width: 21mm / 0.843"
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Rod Bolts: 3/8" ARP2000
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Reciprocating Weight: 125g
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Rotating Weight: 394g
Vehicle Fitment:
Compatible with FA20-equipped vehicles including:
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Scion FA20 / FR-S (2013–2016)
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Subaru FA20 / BRZ (2013–2019)
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Subaru Forester (2014–2018)
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Subaru WRX (2015–2020)
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Toyota FA20 / 86 (2017–2019)
Included:
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(4) Alpha Series Connecting Rods
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(8) ARP2000 3/8" Rod Bolts