Flex F55 Boost X 'New Gen' Turbo – 1KD & 4JJ1 High-Performance Upgrade

300–350 RWHP Rated | 45 PSI Capable | Built for Big Power

✅ High Mount Manifold Compatible | ✅ Fast Spool & Mid-Range Power | ✅ Free Express Shipping Australia-Wide

Step into next-level diesel performance with the Flex F55 Boost X Turbo, built specifically for Toyota Hilux (1KD) and Isuzu/Colorado (4JJ1) engines. Featuring an aggressive 7-blade compressor wheel, increased AR housing, and high-performance bearings, this turbo offers quick spool, excellent mid-range torque, and reliable boost capability up to 45 PSI.

Perfect for builds targeting 300–350 rear-wheel horsepower with proper modifications and tuning.

🔧 Vehicle Fitment:

• Toyota Hilux N70 1KD-FTV – 2005–2015 (requires aftermarket 44mm/F55 high-mount manifold)
• Holden Rodeo RA7 4JJ1 – 2007–2008
• Holden Colorado RC 4JJ1 – 2008–2012 (minor manifold mods required)
• Isuzu D-MAX 4JJ1 (non-DPF) – 2008–2016 (minor manifold mods required)

Custom manifold modification or aftermarket manifold may be required. See notes below.

💥 Turbo Highlights & Features:

• 6-Blade Compressor Wheel – Rapid spool, reduced lag, excellent mid-range response
• 12% Larger Compressor AR – Increased airflow and mid-range torque
• High-Performance Bearing System – Built for sustained high boost
• 44mm / DMAX-Style Rear Flange – Direct fit for aftermarket manifolds

📦 What’s Included in Your Kit:

• Flex F55 Boost X Turbocharger
• Wastegate Actuator & Relocatable Bracket
• Oil Feed & Drain Hose Kit (suits D-Max Low Mount)
• Turbo & Engine Block Oil Fittings (suits D-Max Low Mount)
• Dump Pipe Studs & Copper Nuts

⚙️ Required & Recommended Upgrades:

• High Mount Manifold (44mm/F55 type) or manifold modification
• Custom Dump Pipe
• DPF & EGR Delete (for applicable models)
• Supporting Fuel & Intercooler Mods (+60/+100 injectors & intercooler, upgraded fuel pump recommended)
• Custom ECU Tuning (required)

⚠️ Fitment & Modification Notes:

• Manifold drilling/tapping or port-matching may be required on some 4JJ1 models.
• 4JJ1-TCX (2016–2020 DMAX) requires custom manifold, dump pipe, DPF, and EGR delete.

💵 Buy Now, Pay Later

We support Afterpay, Humm, Klarna, and Zip – build your turbo today, pay later.

🚚 Free Express Shipping Australia-Wide

Fast, secure shipping from our Aussie warehouse – dispatched same or next business day.