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K1 Subaru. Ej-25. 130.5Mm 'H' Beam

Stock Code:
039DD21131
Description:
SUBARU. EJ-25. 130.5mm 'H' Beam ARP-2000 Bolts.
Stock Level
In Stock
$723.38
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K1 - Forged H‑Beam Connecting Rods

Forged H‑Beam Connecting Rods for Subaru EJ20/EJ25 (K1 039DD21131)

Application / Fitment

  • Designed for Subaru EJ20 and EJ25 engines — includes engines like EJ205, EJ207, EJ255, EJ257 found in WRX, WRX STI, Forester XT, Liberty/Legacy GT, and similar EJ‑series cars.

Key Specifications

  • Rod Set Type: Forged H‑Beam connecting rods (strong and performance‑oriented).

  • Material: Forged 4340 steel for strength and fatigue resistance.

  • Center‑to‑Center Length: 130.50 mm (≈ 5.137″) — a common rod length for performance EJ builds.

  • Pin End Bore: 23.00 mm — fits Subaru EJ pistons that use 23 mm wrist pins.

  • Big End Journal Bore: 55.00 mm — matches EJ crank journals.

  • Bolt Size / Hardware: 3/8″ ARP 2000 rod bolts (BT61501‑S) included — rated for high tensile strength. 

  • Weight: ~533 g per rod (weight‑matched set). 

  • Finish & Tolerances: Shot‑peened and precision machined to tight tolerances (bores held to ± 0.0001″, rods balanced to ± 1 g per end).

  • Wrist Pin Style: Full‑floating bronze bushings for low friction & durability. 

  • Rod Quantity: 4 rods (complete for a 4‑cylinder EJ engine). 

Typical Engine & Vehicle Fitment

These rods fit many Subaru EJ20/EJ25 builds, including:

  • Subaru Impreza WRX / STI (various generations with EJ engines)

  • Subaru Forester XT (EJ25)

  • Subaru Legacy / Liberty GT (EJ25)
    – Works for both turbocharged and many naturally aspirated EJ builds that use 23 mm wrist pins and 55 mm journals.