• 1KD Upgraded Valve Springs - Common Rail Cowboys
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Diesel Performance Parts

1KD Upgraded Valve Springs

1KD Upgraded Valve Springs

$536.00 NZD
$536.00 NZD $536.00 NZD
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1KD Upgraded Valve Springs

 

Performance Valve Spring Set for 1KD-FTV & 2KD-FTV Engines

Step up your 1KD or 2KD build with these high-performance upgraded valve springs — engineered for high boost, high RPM, and reliable valvetrain control.

⚙️ Specs & Performance
  • ✅ Installed Pressure: 19.05 kg @ 34.29 mm (+40% over OEM)
  • ✅ Open Pressure: 34.01 kg @ 25.4 mm (+37% over OEM)
  • ✅ Spring Profile: 7 coils, 2.9mm thick, anti-clockwise
  • ✅ Inner Diameter: 17.8 mm
  • ✅ Outer Diameter: 23.65 mm
🔧 Why Upgrade?
  • Prevents valve float under high boost & RPM
  • Essential for oversized cams & heavy tuning
  • Maintains reliable valvetrain control under pressure
📦 Kit Includes
  • Set of 16 upgraded valve springs
  • Designed to suit Toyota 1KD-FTV & 2KD-FTV engines
💳 Payment & 🚚 Shipping
  • 💳 Afterpay, Zip, Klarna & Humm available
  • 🚚 Free Express Shipping Australia-Wide

❓ FAQs

Do I need upgraded springs for a tuned 1KD?

Yes — once boost and RPM exceed stock levels, upgraded springs prevent valve float and protect the valvetrain.

Are these drop-in replacements?

Yes, they are designed as direct replacements for OEM springs in 1KD & 2KD heads.

What boost/RPM are they rated for?

They are engineered to safely handle high-boost diesel builds (30+ PSI) and elevated RPM with oversized cams.

Do I need to modify retainers or seats?

No — they are compatible with OEM retainers and seats. Professional installation is recommended.

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