• 46mm turbocharger – optimal for 220-280 RWHP, 500-800 Nm builds on 1KD Hilux & Prado
• Internal wastegate – clean, reliable boost control (no VNT stepper motor)
• 28–35 PSI capable – 35 PSI actuator included
• Direct bolt-on fit – factory 1KD low-mount manifold compatible
• Strong mid-range torque – responsive street & towing performance
• Complete kit – includes oil lines, gaskets, fittings, actuator (requires 2x additional 5/8 hose clamps, plus boost reference equipment)

Flex is a Thai-engineered performance turbocharger brand specialising in direct bolt-on upgrades for common diesel platforms. The R77 Pro series uses upgraded compressor wheels, stronger main shafts, and integrated internal wastegates to deliver consistent, reliable horsepower and torque without the complexity of variable geometry control.

Trusted by tuning workshops across Australia, New Zealand, Thailand and beyond, the Flex R77 Pro has built a reputation as one of the most cost-effective bolt-on power upgrades available for the 1KD-FTV platform.

• Model: FLEX R77 Pro
• Compressor: 46mm
• Wastegate: Internal (35 PSI actuator included)
• Boost Range: 28–35 PSI recommended
• Power Capability: 220–280 RWHP (with supporting mods)
• Torque Capability: Up to 800 Nm at the wheels
• Fitment: Direct bolt-on to 1KD-FTV (Hilux N70, Prado 120/150, Hiace)

• Toyota Hilux N70 KUN25 / KUN26 – 1KD-FTV (2005–2015)
• Toyota Prado 120 Series – 1KD-FTV (2003–2009)
• Toyota Prado 150 Series – 1KD-FTV (2009–2015)
• Toyota Hiace – 1KD-FTV
• Toyota Fortuner – 1KD-FTV

✅ Direct bolt-on: The Flex R77 Pro 46mm bolts to the factory 1KD low-mount manifold, factory exhaust, and factory intercooler piping. Compatible with N70 Hilux KUN25/KUN26, Prado 120, Prado 150, Hiace and Fortuner 1KD-FTV applications.

• ✅ FLEX R77 Pro 46mm Turbo (internal wastegate)
• ✅ Manifold & Dump Pipe Gaskets
• ✅ Oil Feed Line
• ✅ AN Adapters (Banjo style)
• ✅ Banjo Bolt & Washers
• ✅ Oil Drain Fitting, Bolts & Gasket
• ✅ 35 PSI Wastegate Actuator

Comprehensive kit with all essential hardware for installation.

• ✅ Genuine Flex Thailand product — sourced direct, never grey-market
• ✅ Free express shipping Australia-wide
• ✅ Same or next business day dispatch from our Aussie warehouse
• ✅ Afterpay, Humm, Klarna and Zip available — upgrade now, pay later
• ✅ Australian-based technical support and warranty

⚠️ CRITICAL: ECU remap required for safe operation. We strongly recommend working with an experienced 1KD/2KD tuner familiar with the Flex R77 Pro platform. A VNT simulator module is required to delete the factory stepper motor when fitting the gated R77 Pro.

Installation notes:

• Boost reference line required (3–4mm silicone) – tee or intercooler pipe boss
• Oil return hose setup – factory oil return modification required
• Compressor cover tapping may be required if no boost source exists
• Hose clamps required – 2× for oil return line (not included)
• Turbo & dump pipe studs/nuts not included — reuse originals or purchase separately
• Other general modifications - may be required.
  

Essential accessories:

• 1KD VNT Simulator Module – (Tap once to add to cart) - ECU stepper motor delete (required for gated R77 Pro install)
• Coolant Line Kit – (Tap once to add to cart) - available separately for complete installation
• Boost reference setup – intercooler pipe boss and barb required
• Oil return hose setup – factory oil return modification required + 2x hose clamps

To achieve 220-280 RWHP on your 1KD Hilux or Prado, pair the R77 Pro 46mm with:

Fuel System:

• +50 Injectors/Nozzles
• 1KD SCV Upgrade
• Appropriate fuel pump for higher output (year dependent)

Air System:

• Front-Mount Intercooler (FMIC)
• High-flow intake/airbox upgrade
• 3" exhaust system

Tuning & Monitoring:

• ECU remap required – professional tuning essential
• Boost gauge (accurate to 40 PSI)
• EGT gauge for safety

Suggested boost: ~28 PSI minimum | Max recommended: 35 PSI (35 PSI actuator included)

• 💸 Buy Now, Pay Later: Afterpay, Humm, Klarna & Zip available
• ✈️ Free Express Shipping Australia-Wide
• 📦 Fast dispatch – same or next business day from our Aussie warehouse

For off-road / competition use only. Turbo modifications may affect compliance. ECU tuning required. Check local regulations before purchase.

Q: Is this a direct bolt-on for my 1KD Hilux N70 or Prado?

A: Yes — bolts to the factory 1KD low-mount manifold, dump and intercooler piping on Hilux N70 (KUN25/KUN26), Prado 120, Prado 150 and Hiace. Oil drain modification required for proper return flow.

Q: What boost levels should I run?

A: Typical setups run ~28–35 PSI depending on supporting mods and tuner strategy. The included 35 PSI actuator provides headroom for aggressive builds.

Q: Do I need a tune?

A: Yes. An ECU remap is mandatory to manage boost, fuelling and EGTs. Work with an experienced 1KD tuner familiar with the Flex R77 Pro platform.

Q: What supporting mods are recommended?

A: +30/+50 injectors, quality FMIC, 3" exhaust, upgraded intake and professional tuning are essential for 220-280 RWHP / 800 Nm.

Q: What power can I expect from a 1KD Hilux with the R77 Pro 46mm?

A: With proper supporting mods (NPC 850nm Clutch, +50% injectors, FMIC, exhaust, tune) and leaning on the turbo, 280+ RWHP / 800 Nm is achievable. Results vary based on build quality and tuning.

Q: Do I need the VNT simulator module?

A: Yes — required. The VNT simulator deletes the ECU stepper motor, eliminating factory VNT control issues when fitting a gated R77 Pro.

Q: What's included in the coolant line kit?

A: The coolant line kit is available separately and provides proper coolant feed/return for the turbo. Check product listings for details.

Q: Will this work with my factory intercooler?

A: While it will physically fit, an upgraded FMIC is strongly recommended to handle the increased airflow and boost levels for best performance and reliability.

Q: How does this compare to the Flex VNT 44mm?

A: The R77 Pro 46mm uses an internal wastegate (simpler, more reliable) vs the VNT's variable geometry. The R77 Pro can make more peak power but is lazier in the bottom end than the Flex 44mm VNT. Results as high as 280 RWHP and 800 Nm have been seen on this turbo, hitting hard and feeling significantly faster up top.

Q: Is this genuine Flex product?

A: Yes — sourced direct from Flex Thailand. Common Rail Cowboys never sells grey-market or counterfeit turbos.

Q: Can I install this myself?

A: If you're mechanically capable, yes — but professional installation and tuning are strongly recommended for best results and reliability.