FuseTech
4JJ1 Stroker Shaft - 1.3mm - Fuse Tech
4JJ1 Stroker Shaft - 1.3mm - Fuse Tech
Regular price
$913.00 NZD
Regular price
$975.00 NZD
Sale price
$913.00 NZD
Taxes included.
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π© 4JJ1 Stroker Shaft β 1.3mm by Fuse Tech
Β
Upgrade your HP3 pump for serious power, faster fuel delivery, and stronger rail pressure response.
The 4JJ1 1.3mm Stroker Shaft by Fuse Tech is built for diesel performance enthusiasts chasing reliable gains in horsepower and torque from their Isuzu 4JJ1 fuel system. CNC-machined to precision standards and pressure-tested, this is the proven upgrade for extracting maximum output from your Denso HP3 pump.
β Key Features:
- π§° Precision Machined: 1.3mm stroker profile increases pump stroke & fuel volume
- βοΈ Enhanced Fuel Delivery: Supports 400+ RWHP builds with the right injectors & tune
- π§ Drop-In Fit: Suits Denso HP3 pumps with minimal modification
- π‘οΈ Durability: Premium high-strength materials built to handle sustained rail pressure
- πΈ Performance Value: Big power gains without the cost of a full stroker pump
π¦ Suits:
- Holden Colorado RC & RG β 4JJ1
- Isuzu D-MAX β 4JJ1 (non-DPF & early DPF models)
- Isuzu MU-X β 4JJ1 (up to 2016)
- Any vehicle running a Denso HP3 pump on the 4JJ1 platform
π‘ Notes:
- π¨ Professional installation recommended
- π¦ Installation instructions not included
- π² Message us to confirm stock availability if urgent
Why Buy from Common Rail Cowboys?
- π© Trusted Diesel Performance Experts
- π Free Express Shipping Australia Wide
- π³ Afterpay, Humm, Klarna & Zip Available β Get It Now, Pay Later
Ready to push your 4JJ1 further? Upgrade your HP3 pump today with the Fuse Tech 1.3mm Stroker Shaft β unleash the power your build deserves. π
β FAQs
Do I need tuning after installing the 1.3mm stroker shaft?
Yes β to fully utilise the extra fuel delivery, an ECU remap is strongly recommended to manage rail pressure and EGTs safely.
What power can this support?
With upgraded injectors, turbo, intercooler, and a proper tune, the 1.3mm shaft supports builds targeting up to 400+ RWHP.
Will it fit my stock HP3 pump without major mods?
Yes β itβs designed as a drop-in upgrade for Denso HP3 pumps used on 4JJ1 platforms, with minimal modification required.
Is this a brand new part?
Yes β each Fuse Tech stroker shaft is brand new, CNC-machined and tested for accuracy, strength, and reliability.
