FuseTech
HP5 Stroker Shaft - 1GD/4JJ3 Stroker Shaft - 18mm - Fusetech
HP5 Stroker Shaft - 1GD/4JJ3 Stroker Shaft - 18mm - Fusetech
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HP5 Stroker Shaft - 1GD/4JJ3 - 18mm - FuseTech
+50% Stroke Increase | Built for High RPM Delivery | Made in Thailand 🇹🇭
Unleash the full fuel delivery potential of your HP5 pump with the FuseTech 18mm Stroker Shaft – designed specifically for 1GD-FTV and 4JJ3 engines. This precision-machined upgrade increases stroke from the factory ~12mm to a massive 18mm — a +50% lift gain that helps deliver higher rail pressure and better fuel volume at every RPM.
Flow rate example:
Standard HP5 @ 1500rpm/2000bar - 29L/PH.
Fusetech 16mm shaft HP5 @ 1500rpm/2000bar - 42L/PH.
⚠️ PROFESSIONAL INSTALLATION REQUIRED: HP5 pump disassembly/reassembly requires specialized knowledge. Custom ECU calibration mandatory.
🔥 Why Upgrade to an 18mm HP5 Stroker Shaft?
- +50% Stroke Increase: Stock stroke is ~12mm – this shaft delivers 18mm for serious fueling gains
- High-RPM Ready: Supports aggressive tuning and larger injectors with reduced pressure drop-off
- Precision Machined: Built for long-term reliability under extreme loads
- Made in Thailand: Engineered and manufactured to exacting FuseTech standards
✅ Vehicle Compatibility
- 1GD-FTV: Toyota Hilux, Prado & Fortuner (pre I-ART system only)
- 4JJ3: Isuzu D-MAX, MU-X & Mazda BT-50 (2020+)
⚠️ IMPORTANT: Does NOT fit I-ART versions of 1GD. If unsure, send us your VIN for confirmation.
📦 What's Included
- FuseTech 18mm HP5 Stroker Shaft
- Protective packaging/sleeve
Installation hardware handled by pump builder.
🔧 Technical & Installation Notes
- Professional installation strongly recommended — HP5 requires precise assembly and cleanliness
- Custom ECU calibration required to safely command additional delivery
- Verify overall fuel system health (rail sensor, relief/blank, injectors, lines) before tuning
- For off-road/competition applications where permitted
💳 Payment & Shipping Options
- 💸 Buy Now, Pay Later: Afterpay, Humm, Klarna & Zip available
- ✈️ Free Express Shipping Australia-Wide
- 📦 Typically ships same or next business day
If not in stock, dispatch may take 2–3 weeks. Message us if you need it urgently.
⚠️ Legal Notice
For off-road / competition use only. Fuel system modifications may affect compliance. Check local regulations before purchase.
❓ Frequently Asked Questions
Q: Will this fit I-ART versions of 1GD?
A: No — this shaft suits pre I-ART 1GD-FTV only. If unsure, send us your VIN and we'll confirm.
Q: Do I need tuning after installation?
A: Yes — a custom ECU calibration is required to command the additional delivery safely and avoid rail pressure faults.
Q: What rail pressure gains should I expect?
A: The 18mm stroke provides substantially more pump displacement. Actual rail pressure gains depend on injector condition, relief strategy (or rail blank), and tuner settings.
Q: Can I install this at home?
A: We strongly recommend a professional pump builder. The HP5 requires precise assembly, clearances and cleanliness to avoid premature failure.
Q: Is it road legal?
A: Fuel system modifications may affect compliance. This product is intended for off-road/competition use where permitted. Check local regulations.
Q: Will this work with larger injectors?
A: Yes — the increased stroke helps maintain rail pressure when running larger injectors, especially at high RPM.
⚡ FEED YOUR BUILD PROPERLY
FuseTech 18mm stroker shaft. +50% stroke. High-RPM ready. Professional installation required. Made in Thailand.
Disclaimer: Common Rail Cowboys is not affiliated with Toyota Motor Corporation or Isuzu Motors. Installation should be performed by a qualified HP5 pump specialist. Fitment verification and proper tuning are the buyer's responsibility.
