Flex 44mm VNT Turbo – 1KD Hilux & Prado | FLEX Pro Drop-In

These aren't manufacturer marketing figures - they're from actual CRC customer vehicles on Australian dynos:

Power figures depend on tune, fuel, supporting mods, tyre size and ambient conditions. Both builds peak ~700 Nm ATW - exactly what the Flex 44mm VNT was designed to deliver on a properly built 1KD.

• True drop-in VNT turbo - keeps factory manifold, dump pipe, intercooler piping, oil & coolant lines
• 44mm billet compressor wheel - significantly more airflow than the stock CT16V cast wheel
• Upgraded shaft & thrust bearings - built for sustained boost without shaft play
• Genuine Thai-built Flex Pro VNT - same factory supplying Australia's biggest tuners
• Recommended boost target: 28–30 psi daily / tow, up to 35 psi peak performance
• Re-uses your factory VNT actuator - no aftermarket gated conversion needed
• Full gasket pack included (turbo gaskets x2, oil & coolant feed/return)

✅ Direct bolt-on fitment. Mounts to the factory exhaust manifold, dump pipe, intercooler piping, and OEM oil & coolant lines.

Not sure if it fits? Text us your VIN on 0483 930 906 - we'll confirm in minutes.

• Flex Pro VNT 44mm Turbo – fully assembled and balanced
• Turbo gaskets (x2)
• Oil feed & return gasket
• Coolant feed & return gasket

Actuator not included - re-use your original VNT stepper, or grab a fresh one:

Studs/nuts not included - reuse originals or grab our CRC fitting kit:

• Install: recommended fitment by a qualified diesel mechanic - proper torque specs, oil pre-lube, and clean oil supply are critical for turbo longevity
• Tune: supporting modifications and a remap from a reputable diesel tuner is required to hit the power figures shown above.
• Coolant lines: check OEM hardlines aren't clogged before refit

To hit 250–280+ RWHP, pair the Flex 44mm VNT with:

• MCR +30 or +50 Injectors / Nozzles - clean fuelling above 200 RWHP without smoke
• Front-mount intercooler (FMIC) - drops intake temps, lets you safely run 30+ psi
• 3" turbo-back exhaust - drops backpressure, frees boost response
• High-flow airbox - removes the OEM intake restriction
• Remap from a reputable tuner - non-negotiable for full performance

• 💸 Buy Now, Pay Later: Afterpay, Humm, Klarna & Zip - 4 interest-free instalments
• ✈️ Free Express Shipping Australia-wide - Aus Post eParcel, TNT, FedEx
• 📦 Same or Next Business Day Dispatch on stocked orders
• 🇳🇿 NZ & international shipping available on request

Carries a 12-month manufacturer's warranty against defects in materials or workmanship, alongside your full rights under the Australian Consumer Law. Warranty requires installation by a qualified mechanic with verified oil pressure and oil supply on first start.

Damage caused by lack of pre-lube, blocked oil feed, contaminated oil, over-boost above safe limits, or improper tuning is not covered. See our full Refund & Warranty Policy for complete terms.

Q: Is this a true direct bolt-on for my Hilux N70 or Prado?

A: Yes. Mounts to the factory exhaust manifold, dump pipe, intercooler piping, and OEM oil/coolant hardlines on the Hilux N70, Prado KDJ120, and Prado KDJ150. No fabrication, no cutting.

Q: What power can I expect?

A: Real customer dynos with this turbo, supporting mods, and a tune are landing 263–280 HP at the wheels with 700 Nm ATW. See the dyno results section above for the exact builds.

Q: Do I need a tune?

A: Maybe - We sell these turbos as requiring a tune, but plenty of customers have reported driving them without a tune without issues.

Q: Do I have to buy a new actuator?

A: No - your factory VNT stepper is re-used. Replacement actuators available above if yours is faulty.

Q: How much boost can it safely run?

A: With supporting mods and a proper tune, 28–30 psi as a daily/tow target, up to 35 psi peak on dedicated performance builds.

Q: What injectors do I need?

A: Stock injectors are fine up to ~200 RWHP. Above that you'll see smoke and rising EGTs - go to MCR +30 Injectors / Nozzles for ~220–260 RWHP, or MCR +50 nozzles for 260+ RWHP.

Q: Will it work on my auto?

A: Yes - fits manual and auto 1KDs equally. With auto trans builds we recommend an upgraded transmission cooler if you're towing or running over 250 RWHP regularly.

Q: Can I run it without changing the exhaust?

A: It will physically work on the factory 2.5" exhaust, but you'll see significant backpressure above 25 psi. We strongly recommend a 3" turbo-back to fully unlock the turbo.

Q: How long is the warranty?

A: 12 months manufacturer's warranty plus your full rights under the Australian Consumer Law.

Performance modifications may affect your vehicle's roadworthy compliance and insurance status. Confirm your local regulations before purchase. Common Rail Cowboys is not affiliated with Toyota Motor Corporation or FLEX (Thailand). Installation should be performed by a qualified diesel technician. Tuning, supporting mods, and fitment compliance are the buyer's responsibility.