Flex Hard Pipes 4JJ1 | D-MAX MU-X Colorado | Black or Polished

• No ballooning under boost: maintains consistent flow.
• Boost stable for tuned and towing builds.
• Cleaner engine bay and easier leak detection.
• Sharper throttle response than rubber.
• Durable construction: outlasts factory rubber.
• High boost capable: supports aggressive turbo setups.

• Material: alloy hard pipes.
• Finish options: black or polished silver.
• Clamps: heavy-duty stainless steel T-bar clamps.
• Routing: turbo to intercooler to intake manifold.
• Couplers: black silicone (included).
• Fitment: model-specific design.

• Isuzu D-MAX: 2012 to 2016 (4JJ1, pre-DPF).
• Isuzu MU-X: 2012 to 2016 (4JJ1, pre-DPF).
• Holden Colorado RG Series 1 Duramax: check your piping matches the photos.

Direct bolt-on: model-specific design replaces the factory rubber pipes with no modifications.

Confirm fitment by checking your current piping matches the product photos. Message us with your VIN if unsure.

• Model-specific hard pipe set (turbo to intercooler to intake).
• Black silicone couplers.
• Heavy-duty stainless steel T-bar clamps.

Complete kit ready for installation. Choose Black or Polished finish above.

Installation by a competent person is recommended. Tips:

• Dry-fit before tightening: check alignment and clearances.
• Degrease pipe lips and couplers: ensures a proper seal.
• Pressure test to 20 to 25 PSI: verify no leaks before driving.
• Re-torque after a heat cycle: check all clamps after the first drive.
• Check for interference: ensure pipes clear all components through full suspension travel.

• Tuned 4JJ1 builds: eliminate rubber ballooning.
• High boost setups: stable flow under pressure.
• Towing: consistent performance under load.
• Turbo upgrades: a natural partner for a 4JJ1 turbo upgrade such as the Flex Mini F55 or F55 Boost X.

• Same or next business day dispatch when in stock. If temporarily out of stock, we will confirm an ETA after purchase.
• Free express shipping Australia-wide with full tracking.
• Buy now, pay later: Afterpay, Humm, Klarna and Zip.
• All major credit cards accepted.
• Returns and warranty are covered by our refund policy.
• For off-road and competition use only. Intake modifications may affect compliance. Check local regulations before purchase.

Are these a direct bolt-on replacement?
Yes. The model-specific design replaces the factory rubber pipes from turbo to intake manifold with no modifications required.

What finish should I choose?
Black for a stealthy look, polished for a show-quality engine bay. Both are equally durable and high boost capable.

Will these work with my aftermarket turbo?
Yes. They are designed to work with factory or aftermarket turbos, including the Flex Mini F55, F55 Boost X and other 4JJ1 turbo upgrades.

Do I need a tune after installation?
No tune is required for hard pipes alone. If you are running a tuned vehicle with high boost, hard pipes stop the rubber ballooning.

Will I need to modify anything during installation?
No modifications are required for standard applications. Dry-fit first and check clearance. Some aftermarket setups may need minor adjustment.

What is the difference between this and factory rubber?
Factory rubber pipes expand under boost (ballooning), dulling throttle response and risking boost leaks. Hard pipes maintain consistent flow.

How do I confirm fitment for my vehicle?
Check your current piping matches the product photos. Message us with your VIN if unsure and we will confirm fitment before dispatch.

Will these fit 2017 on D-MAX and MU-X?
No. This kit is for 2012 to 2016 models (4JJ1, pre-DPF). Later models have different piping.