Platform · RAM TRX

RAM TRX Supercharger
Upgrades & Services

The TRX already does 702 horsepower. We fix the ceiling.

Why TRX Owners Come to FAS

The RAM TRX runs a 2.4L IHI twin-screw supercharger from the factory. It's a capable setup — until you start pushing it. The stock blower tops out fast, heat soak becomes a consistent problem above 800 whp, and the factory snout bearings aren't built for sustained boost at elevated RPM. Most TRX owners hit a wall around the same mods: tune, intake, exhaust. After that, the supercharger itself is the restriction.

FAS Motorsports specializes in exactly that transition point. We precision port, rebuild, and upgrade the IHI and Dominator supercharger platforms with tolerances that production lines don't hit. Every TRX build we touch is engineered for reliability first — not just peak validation numbers.

TRX Services

2.4L IHI Supercharger Porting

The factory IHI rotor pack leaves material on the table. Our porting process opens the inlet and outlet for improved airflow efficiency across the full RPM range. Result: more top-end pull, reduced inlet temps, no reliability compromise.

Shop IHI Rebuild →

DOMINATOR 2.4L Supercharger Package

Race porting performed on your own TRX 2.4L IHI core — a ship-in service, not a replacement blower. Base package covers the 108mm ported and polished snout, ported bearing plate with billet air foil, upgraded bearings, pin bushings and new oil. RACE ELITE and the 130mm billet snout are paid upgrades.

Shop Dominator Package →

Snout Bearing Upgrade

High-boost TRX builds put serious load on the factory snout bearings. Upgraded bearings eliminate the failure point before it becomes a problem — standard on all FAS TRX builds, available as a standalone service.

Shop Bearing Upgrade →

Full Supercharger Rebuild

Worn rotors, failed bearings, oil contamination — FAS rebuilds the complete IHI assembly to factory-new clearances. Faster turnaround than OEM replacement. Better result.

Request Rebuild Info →

TRX Supercharger Technical Detail

The RAM TRX uses a 6.2L Hellcat-derived HEMI mated to a 2.4L IHI twin-screw supercharger producing 11.6 psi of factory boost. The IHI unit is a positive-displacement design — meaning boost builds proportionally with RPM — which makes it highly responsive but thermally sensitive at elevated output levels.

The primary constraint in stock form is the inlet port geometry. The factory casting prioritizes manufacturing consistency over flow efficiency, leaving measurable restriction in the rotor path. Under sustained wide-open-throttle at higher boost, this translates directly to inlet temps that compress the power curve and pull timing.

FAS addresses this at the source: precision ported inlet and outlet runners, hand finished, with precision rotor clearance matching and bearing replacement where load analysis indicates wear. On a properly built TRX, the result is a flatter torque curve, improved top-end response, and sustained reliability at power levels the stock assembly can't hold.

The DOMINATOR 2.4L package is the fuller race porting job on your own factory IHI — you ship the blower in and FAS ports, rebuilds and returns it. The product record supports a 75–135+ whp gain over stock on the same supporting setup; the RACE ELITE upgrade is specified to support 1,100+ whp with the correct supporting build. Pulleys and calibration are not included.

Spec	Stock IHI	FAS Ported IHI	Dominator 2.4L
Displacement	2.4L	2.4L	2.4L — your own core, race ported
Package gain over stock	—	+40–60 rwhp (snout only)	75–135+ whp
Supported ceiling	—	—	1,100+ whp with the RACE ELITE upgrade (paid)
Inlet geometry	Factory cast	Precision ported, hand finished	108mm ported and polished
Bearing spec	OEM	Upgraded available	Upgraded snout + bearing-plate bearings std.
Snout	Cast aluminum	OEM or billet	Ported OEM std. · 130mm billet is a paid upgrade

Frequently Asked Questions

Does porting the TRX supercharger void my warranty?

Modifying the supercharger is likely to void the powertrain warranty on that component under Magnuson-Moss. However, FAS builds are frequently paired with a tune from a reputable shop — at that point, most owners are operating outside the warranty window anyway. We recommend discussing with your dealer before any work if warranty coverage is still a concern.

What's the difference between porting the IHI and installing the Dominator package?

Both work on the blower you already own. Snout porting reworks the inlet section only. The DOMINATOR 2.4L is the fuller race porting job on the same core — 108mm ported and polished snout, ported bearing plate with billet air foil, upgraded snout and bearing-plate bearings, new pin bushings and new oil — with a 75–135+ whp gain over stock on the same supporting setup. It is a ship-in service, not a replacement blower. RACE ELITE, the 130mm billet snout, pulleys and calibration are priced separately.

How long does a supercharger rebuild take?

Lead time moves with the shop queue and the condition of the part. Call or request a quote for the current turnaround on TRX IHI rebuilds and DOMINATOR package builds before you ship your supercharger.

Can I ship my supercharger to FAS for a rebuild?

Yes. FAS accepts shipped supercharger cores for rebuild and porting services. Contact us to confirm specs before shipping.

What's the best first mod on a stock TRX before touching the supercharger?

Intake and tune first — there's free power there before you need to touch the blower. Once those are done and you're looking for the next step, the snout bearing upgrade and IHI porting are the logical progression.

Does FAS handle tuning?

FAS does not provide in-house tuning. We work alongside trusted tuners who specialize in FCA/Hellcat platform calibration and can provide a referral at time of service.