The Best Mods for Jeep Trackhawk & Grand Cherokee SRT Owners

How to unlock more power, fix the weak points, stop heat-soak, and keep your 2.5-tonne Jeep alive at 300+kW.

The WK2 Grand Cherokee SRT and Trackhawk are two of the wildest SUVs ever sold in Australia. One is a 6.4L N/A muscle truck, the other a 700hp supercharged AWD missile — and both respond insanely well to the right upgrades.

But here’s the truth:

You don’t mod these Jeeps the same way you mod a Wrangler.
You mod them like a 4×4 that thinks it’s a Hellcat.

This guide covers the essential mods, power stages, known weak points, and smartest upgrade path for both the 6.4 SRT and 6.2 Trackhawk.

✅ Platform Overview

The Trackhawk is basically a factory supercharged Jeep Hemi swap — same ZF 8-speed family as JL/Gladiator, AWD driveline, Brembo brakes… and a cooling system barely coping at stock power.

✅ The 3 Weak Points You MUST Upgrade First

1️⃣ Cooling System – both SRT & Trackhawk heat-soak easily
2️⃣ Diff Bushings – factory rubber tears under torque
3️⃣ Brakes – 2.5 tonnes + 250km/h launch power = fade danger

Before pulley kits, tunes, intakes or exhaust — fix those first.

✅ Best Mods for WK2 SRT (6.4L)

The SRT responds best to airflow, tuning, and cooling upgrades.
It’s not a boost motor unless you go stroker or supercharger.

✅ Best Mods for Trackhawk (6.2 Supercharged)

Trackhawks don’t need engine swaps — they need heat management.

✅ Why Cooling Is Everything

• The Trackhawk supercharger is air-cooled + coolant-fed
• When it heat soaks, power drops instantly
• That’s why every fast Trackhawk runs:
✅ Bigger heat exchanger
✅ Ice tank or reservoir
✅ Lower temp thermostat
✅ Proper coolant burp

Same rule for SRT: hot Hemi = slow Hemi.

✅ Driveline & Safety Mods That Matter

✔ Diff bushings (factory ones tear in 30,000–60,000km)
✔ Stronger propshaft (Trackhawk torque kills factory one)
✔ Brake pad & rotor upgrade (even Brembos fade on mountain runs)
✔ Poly or billet engine mounts (removes wheel-hop)

The Trackhawk isn’t fragile — it’s just engineered for stock power.

✅ Tyres: The Biggest Performance Mod Most Owners Ignore

Trackhawk power is useless if traction sucks.

✅ JEEPLAB Parts We Supply for SRT & Trackhawk

🔧 Performance belts & pulley kits
🔧 Upgraded diff & cradle bushings
🔧 Thermostats & coolant system upgrades
🔧 Rotors, pads, brake fluid kits
🔧 Intakes, headers & exhaust systems
🔧 Heat exchangers & reservoir tanks
🔧 Performance plug & coil kits
🔧 Trackhawk-specific accessories (belts, supercharger lids, etc.)

We supply the parts — you choose the tuner or installer.

✅ Quick Reference: What Each Owner Should Do First

WK2 SRT

✅ Intake
✅ Thermostat
✅ Tune
✅ Bushings
✅ Exhaust

Trackhawk

✅ Cooling
✅ Pulley + belt
✅ Meth or IC tank (optional)
✅ Brakes
✅ Tyres

🏁 Final Word

You don’t buy an SRT or Trackhawk because it’s practical.
You buy it because it’s the last real V8 AWD muscle SUV on Earth.

And with the right mods:

✔ SRT becomes the V8 Jeep it always should’ve been
✔ Trackhawk becomes a 10-second family car with A/C and seat heaters
✔ Both become reliable if cooling & bushings are sorted first

JEEPLAB supplies performance parts for both platforms — shipped Australia-wide.

📩 Want a Trackhawk/SRT parts list? Message JEEPLAB.