Flex
Flex F55 Boost X Turbo
Flex F55 Boost X Turbo
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Flex F55 Boost X 'New Gen' Turbo – 1KD & 4JJ1 High-Performance Upgrade
✅ 300–350RWHP Rated | ✅ 45 PSI Capable | ✅ Free Express Shipping AU
Step into next-level diesel performance with the Flex F55 Boost X Turbo, purpose-built for Toyota Hilux 1KD and Isuzu/Colorado 4JJ1 platforms. Featuring a high-flow 7-blade compressor wheel, upgraded bearing system and 12% larger AR housing, this turbo delivers fast spool, brutal mid-range torque and reliable boost up to 45 PSI.
Perfect for builds chasing 300–350RWHP with supporting mods and ECU 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 (2008–2016, non-DPF) – minor manifold mods required
Note: Later 4JJ1-TCX D-MAX (2016–2020) requires custom manifold, dump pipe, DPF & EGR delete.
💥 Turbo Highlights & Features
- 🌀 7-Blade Compressor Wheel – rapid spool & reduced lag
- 📈 12% Larger AR Housing – more airflow & mid-range torque
- ⚙️ High-Performance Bearings – sustained reliability under boost
- 🔩 44mm / D-MAX Style Rear Flange – manifold compatibility
📦 What’s Included
- Flex F55 Boost X Turbocharger
- Wastegate Actuator + Relocatable Bracket
- Oil Feed & Drain Hose Kit (D-MAX low mount)
- Turbo & Engine Block Oil Fittings
- Dump Pipe Studs & Copper-Coated Nuts
⚙️ Required & Recommended Upgrades
- ✔ High-mount manifold (44mm/F55 type) or modified factory manifold
- ✔ Custom dump pipe
- ✔ DPF & EGR delete (where applicable)
- ✔ Fuel & intercooler upgrades (+60%/+100% injectors & larger intercooler)
- ✔ Upgraded fuel pump strongly recommended
- ✔ Custom ECU remap – mandatory
⚠️ Fitment Notes
- Manifold drilling/tapping or port-matching may be required on some 4JJ1 models
- Later D-MAX 4JJ1-TCX requires custom manifold, dump pipe and deletes
💳 Payment Options
Afterpay, Humm, Klarna & Zip – get your turbo now, pay later.
🚚 Free Express Shipping Australia-Wide
Fast dispatch from our Aussie warehouse – usually ships same or next business day.
Frequently Asked Questions
What power can I expect from the F55 Boost X?
With proper tuning and supporting mods, this turbo supports 300–350RWHP.
Does it bolt to a factory manifold?
It requires a 44mm/F55 high-mount manifold or manifold modification for fitment.
What upgrades are required?
A custom ECU remap is mandatory. We also recommend upgraded injectors, fuel pump, intercooler and custom dump pipe.
Will this fit my D-MAX?
Yes for 2008–2016 4JJ1 non-DPF with minor mods. Later 2016+ 4JJ1-TCX requires custom work and deletes.
What warranty is included?
Standard warranty against manufacturing defects, provided installation and tuning requirements are met.
