Common Rail Cowboys
FLEX F66 Turbo
FLEX F66 Turbo
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FLEX F66 Turbocharger – 2024 Model by Siam Motorsports / Flex Thailand
Next-Level Boost for 1KD, 4JJ1 & 4JJ3 Performance Builds
✅ 45 PSI Rated | ✅ Billet 6-Blade Wheel | ✅ Inconel Turbine | ✅ Free Express Shipping
Unleash serious performance with the 2024 FLEX F66 Turbo from Siam Motorsports — engineered for enthusiasts chasing big power, high boost, and bold style. Featuring a precision billet compressor wheel, upgraded A/R front cover, and high-temp Inconel turbine, this turbo is built to deliver maximum airflow, durability, and response.
⚙️ Key Performance Features
- Billet anodised red 6-blade compressor wheel — approx. 52.5 mm CNC-machined for airflow & response
- High-temp Inconel turbine — 52.5 mm, 11-blade for sustained high boost & EGT
- F55-flanged turbine housing (No. 14.5) — flow-optimised housing for reliable fit and fast spool
- Upgraded A/R front cover — improves compressor efficiency and power output
- Boost capacity: up to 45 PSI — ideal for tuned 1KD, 4JJ1 & 4JJ3 builds
📐 Turbo Specs
Compressor | Billet 6-blade, ~52.5 mm, anodised red |
Turbine | Inconel 11-blade, ~52.5 mm |
Turbine Housing | F55 flange, No. 14.5 |
Front Cover | Upgraded A/R for efficiency |
Boost Rating | Up to 45 PSI (with appropriate tuning/support) |
🚙 Compatibility
- Toyota Hilux N70 / N80 (1KD)
- Toyota Prado 120 / 150 (1KD)
- Isuzu D-MAX (4JJ1 / 4JJ3)
- Isuzu MU-X (4JJ1 / 4JJ3)
Designed to suit high-mount turbo manifold configurations — custom fabrication and supporting parts required.
🔧 Fitment Notes
- High-mount manifold required; not a direct replacement for factory low-mount turbos
- Expect custom dump pipe/exhaust adaption, intake pipework & intercooler alignment
- ECU remap required — manage boost, rail pressure & air-fuel safely
- Ensure fuel system health (pump, injectors) before tuning for high boost
- For off-road/competition use where legal; check local regulations
📌 Recommended Supporting Mods
- Front-mount or upgraded intercooler
- High-flow intake & 3″ exhaust
- Clutch/transmission upgrade (manuals) for high torque builds
- Appropriate injectors and fuel control (as required by your tuner)
- Quality catch can & EGT/boost monitoring
📦 What’s Included
- FLEX F66 Turbocharger assembly (as pictured)
Gaskets, lines, fittings and manifold/dump components are typically not included unless specified. Contact us if you need a fitting bundle.
💳 Payment & 🚚 Shipping
- Afterpay, Humm, Klarna & Zip available
- Free Express Shipping Australia-Wide — fast, trackable dispatch (same or next business day)
Frequently Asked Questions
Is this a direct bolt-on to my stock manifold?
What boost should I run?
What supporting mods do you recommend?
Will this affect my warranty or road legality?




