• inner hex stud and top lock nut kit for Subaru Forester Impreza Legacy EJ20 EJ25 TD04 TD05 IHI RHF5H RHF55 RHF5HB VF22 VF30 VF34 (Turbo to manifold & Turbo to dump pipe)
  • inner hex stud and top lock nut kit for Subaru Forester Impreza Legacy EJ20 EJ25 TD04 TD05 IHI RHF5H RHF55 RHF5HB VF22 VF30 VF34 (Turbo to manifold & Turbo to dump pipe)
  • inner hex stud and top lock nut kit for Subaru Forester Impreza Legacy EJ20 EJ25 TD04 TD05 IHI RHF5H RHF55 RHF5HB VF22 VF30 VF34 (Turbo to manifold & Turbo to dump pipe)
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Subaru EJ20 EJ25 Turbo Stud & Nut Kit | WRX STI Forester XT Legacy GT

Subaru EJ20 EJ25 Turbo Stud & Nut Kit | WRX STI Forester XT Legacy GT

$75.03 USD
$0.00 USD $75.03 USD
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Technical Description

Fix the dreaded "ticking" sound and prevent snapped studs during your next turbo swap. The Subaru EJ Boxer engine creates an intense heat-soak environment around the turbocharger. Over time, factory exhaust hardware stretches, rusts, and eventually snaps—leading to power-robbing exhaust leaks at the manifold or dump pipe junctions. This GryphonTek Series Kit is the professional, high-tensile upgrade designed to maintain a permanent, leak-free seal under extreme thermal stress.

GryphonTek Engineering

  • S35C Heat-Treated Strength: Every stud is phosphate-coated and heat-treated to HRC30~36. Designed to handle thousands of extreme heat cycles without stretching or losing clamping force.
  • Internal Hex-Tip Installation: Features a 5mm inner hexagon end. Allows you to seat the studs perfectly into the flange with a simple hex key—eliminating the need for risky "double-nutting" in tight spaces.
  • Anti-Seize Top-Lock Nuts: Copper-plated flange nuts prevent "galling" (seizing) to the stud. The mechanical top-lock design ensures the nut stays torqued despite engine vibration.
  • Permanent Exhaust Seal: Specifically engineered for EJ20/EJ25 TD04L, TD05H, and IHI VF-Series turbos to ensure a zero-leak junction for better boost response.

Specifications & Data

Kit Included +

• S35C Heat-Treated Steel Studs (with 5mm Hex-Tip)
• Top-Lock Copper-Plated Flange Nuts

Vehicle Compatibility +

• Make: Subaru
• Engine: 2.0L / 2.5L EJ20, EJ25 (EJ205, EJ207, EJ255, EJ257)
• Models: WRX, STI, Forester XT, Liberty GT, Legacy GT

Product Specifications +

• Turbo Models: TD04L, TD05H, IHI RHF5H, RHF55, VF22, VF30, VF34, VF39, VF43, VF48, VF52
• Connection: Turbocharger to Exhaust Manifold & to Dump Pipe
• Stud Material: S35C Medium Carbon Steel (Class 8.8)
• Stud Coating: Phosphate (Anti-Rust)
• Nut Material: Copper-Plated Steel (Top-Lock Mechanical Design)
• Benefit: Prevents stud snapping, stretching, and exhaust leaks
• Installation: 5mm Hex Key compatible for precise seating

Support & Logistics

Shipping & Global Export +

Proudly exported to 75+ countries. All orders are dispatched via DHL Express, FedEx, or EMS from our Taiwan hub.

  • AU / USA: 3-5 Business Days.
  • Rest of World: 5-12 Business Days.
  • Tracking: End-to-end tracking number provided within 48H.
Import Duties & Taxes +

We’ve optimized our tax process for core markets to ensure zero hidden fees:

USA MARKET

All-inclusive pricing. No hidden duties or extra fees at delivery.

AUSTRALIA

Orders under AUD 1,000 are typically tax-free. No GST surprises.

*Other Countries: All import duties and carrier processing fees are the buyer's responsibility.

30-Day Returns & Warranty +

30-Day Returns: Return or exchange within 30 days of delivery. (Shipping at buyer's expense).

Limited Lifetime Warranty: Covers manufacturing defects. (Excludes racing misuse).

GryphonTek Engineering — Precision Fitment. Global Delivery.