Skip to product information
1 of 6

Flex

Flex Mini F55 Low-Mount Kit | N70 Hilux 1KD

Flex Mini F55 Low-Mount Kit | N70 Hilux 1KD

Regular price $2,851.00 NZD
Regular price Sale price $2,851.00 NZD
Sale Sold out

Taxes excluded. Shipping calculated at checkout.

Quantity
Normally Ships in 0-2 Business Days
Secure Checkout
VISA Pay Pay

Flex Pro R31-R V2 – Mini F55 Low-Mount Kit – N70 Hilux

Signature Mini F55 Sound | Fast Spool | 30-35 PSI Boost

⚡ Flex Ultimate Performance Mini F55 Low-Mount 🔥 Stu Stu Stu Sound 🔊 💳 Afterpay • Humm • Klarna • Zip 🚚 Free Express Shipping AU

Signature Mini F55 Sound | Fast Spool | Built for Power

Elevate your 1KD N70 diesel build with the FLEX PRO R31-R V2 Turbo Low-Mount Kit, known as the Mini F55. This 44mm gated turbo delivers rapid low–mid RPM spool, sharp response, and the iconic F55 whistle / "Stu Stu Stu" sound—ideal for daily, touring, and performance builds.


⚙️ Turbo Specifications
  • Compressor wheel: 44.5mm, 6-blade
  • Intake mouth: 79.5mm
  • Turbine wheel: 46mm, 12-blade
  • Rear flange: RHF4 D-MAX flange
  • Manifold side flange: 5-bolt multi-fit
  • Boost rating: up to 35 PSI
  • Wastegate actuator: fully assembled & pre-set (35 PSI)
  • Sound: F55-style whistle & Mini "Stu Stu Stu" chatter

🔧 Vehicle Compatibility
  • Toyota Hilux N70 (2005–2015) – 1KD-FTV

⚠️ FABRICATION REQUIRED: Dump pipe must be custom fabricated to suit OEM, aftermarket or 3" exhausts. Custom intake required, among other modifications.


📦 What's Included

Complete low-mount turbo kit:

  • FLEX PRO R31-R V2 Turbo (Mini F55)
  • Laser-cut stainless actuator bracket
  • 35 PSI wastegate actuator (pre-set)
  • Turbo re-oriented for 1KD low-mount installation
  • FLEX dump pipe flange
  • Mounting bolts
  • Dump pipe studs and nuts
  • Turbo gaskets
  • Oil feed line & oil return line and fittings
  • Liqui Moly pre-lube

More or less everything you need for an easy installation (intake and dump pipe fabrication required).

We have coolant lines available for this turbo kit here.


💪 Why Choose Mini F55 Low-Mount?
  • Iconic "Stu Stu Stu" sound – Mini F55 whistle and spool
  • Fast-spooling gated turbo – near-instant boost response
  • Built for reliable power – 35 PSI rating
  • Street & touring friendly – power, reliability and sound
  • Low-mount specific – factory manifold compatible
  • Complete kit – includes all essential hardware

🛠️ Installation Notes
  • Custom dump pipe fabrication required – suit OEM or 3" exhaust
  • Custom intake required – 79.5mm intake mouth
  • Turbo re-oriented for 1KD low-mount – bolt to factory manifold location
  • Oil priming: Always use supplied Liqui Moly pre-lube before first start
  • ECU tuning: Professional remap highly recommended
  • Professional installation recommended

💡 Recommended Supporting Mods

Get the most from your Mini F55 Low-Mount:

  • Custom dump pipe — required (suit OEM or 3" exhaust)
  • Custom intake — required (79.5mm intake mouth)
  • Quality intercooler — handle up to 35 PSI boost
  • 3" exhaust system — maximize flow and enhance sound
  • Boost & EGT monitoring — accurate gauges essential
  • Clean oil feed/return — ensure turbo longevity
  • ECU remap — unlock full potential safely

💳 Payment & Shipping Options
  • 💸 Buy Now, Pay Later: Afterpay, Humm, Klarna & Zip available
  • ✈️ Free Express Shipping Australia-Wide
  • 📦 Fast, trackable dispatch from Australian warehouse

⚠️ Legal Notice

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


❓ Frequently Asked Questions

Q: Do I need custom fabrication?

A: Yes — you'll need a custom dump pipe and intake to suit your vehicle/exhaust (OEM or 3").

Q: Is tuning required?

A: A professional ECU remap is highly recommended to safely control boost, fueling, and timing.

Q: What boost can it safely run?

A: Rated to around 35 PSI with correct fueling and tuning. Your tuner will set safe targets based on your setup.

Q: Will it bolt to my factory manifold?

A: Yes — re-oriented specifically for 1KD low-mount applications. Bolts to factory manifold location.

Q: Is this road-legal?

A: Sold for off-road/competition use where permitted. Check local regulations before purchase.

Q: What makes the "Stu Stu Stu" sound?

A: The iconic sound comes from the gated wastegate actuator combined with the turbo's compressor design. It's the signature Mini F55 whistle and chatter.

Q: Is this suitable for daily driving?

A: Yes — when properly tuned, the Mini F55 offers a great balance of performance and drivability for street and touring use.

Q: What's the difference between this and the 4JJ1 Mini F55?

A: This version is specifically re-oriented for 1KD N70 Hilux low-mount applications. The 4JJ1 version has different orientation and fitment.

Q: What's included in the kit?

A: Complete kit includes turbo, actuator bracket, 35 PSI wastegate actuator, dump pipe flange, gaskets, oil feed/return lines, Liqui Moly pre-lube, and all mounting hardware.


⚡ GET THE ICONIC F55 SOUND ON YOUR N70

FLEX Mini F55 low-mount kit. Stu Stu Stu chatter. Fast spool. 35 PSI capable. Complete kit with pre-lube. 1KD N70 Hilux specific.

Disclaimer: Common Rail Cowboys is not affiliated with Toyota Motor Corporation or FLEX Thailand. Installation should be performed by a qualified technician. Custom fabrication, proper tuning and supporting modifications are the buyer's responsibility.

View full details