FAS 850 Package | TRX

$7499.99

Professional installation service only. Vehicle not included.

The FAS 850 Package is the perfect balance between drivability and performance, pushing your Hellcat platform to 850 WHP with pulley upgrades, injectors, pinned crank, thermostat, and full dyno tuning.

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Product Details▾

The FAS 850 Package is one of the most popular Hellcat upgrade options for customers who want to enjoy factory-like drivability while unlocking serious performance gains. With a reliable 850+ wheel horsepower target, this package includes all the key supporting mods to keep your vehicle safe, cool, and consistent.

Every build is installed and dyno tuned in-house by FAS Motorsports, featuring custom engine and transmission calibration by 1320Tunez. The package is designed to maximize power on pump fuel while ensuring everyday comfort and reliability.

Some Optional Upgrades

Cold air intake system
Longtube headers with race midpipes
Upgraded heat exchanger
Drag radial tire package for improved traction

Typical turnaround time of 4–5 business days, the FAS 850 Package is a proven path to strong, reliable performance without compromising daily usability.

Specifications

Target Power	850+ whp
Fuel	93 Octane Pump Gas
Induction	Stock supercharger with upper & lower pulley upgrade
Reliability Mods	Dual pinned crank
Cooling	180° thermostat
Ignition	NGK spark plugs
Tuning	PCM unlock + custom engine & trans calibration (1320Tunez)
Turnaround Time	4–5 days

Attributes

Power Level	850+ WHP
Fuel Type	93 Octane Pump Gas
Induction	Stock Supercharger + Pulley Upgrades
Reliability	Dual Pinned Crank + Upgraded Injectors
Cooling	180° Thermostat
Tune Provider	1320Tunez
Combatibility	RAM TRX
Turnaround	4-5 Days

Included in Kit

FAS upper pulley kit	1
Predator lower pulley kit	1
Dual pinned crank upgrade	1
Upgraded injectors	1
180° thermostat	1
NGK spark plugs	1
Bypass cable	1
ECU unlock	1
All tuning credits included	1
Full PCM & TCU custom dyno tuning by 1320Tunez	1

Important Notes

Install Only Package – designed for Hellcat platform vehicles; TRX

Dyno results may vary based on fuel quality, altitude, and supporting modifications.
Vehicle must be delivered to FAS Motorsports; mail-order is not available.
Typical lead time is 1-3 weeks | Install completion time: 4–5 days (expedited service available).
Lead times vary; please contact us for current scheduling.
Package completion requires a minimum of 4 days, depending on optional upgrades.