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Vehicle Info NeededFLOWMASTERPART NUMBER: 389-817818
Outlaw Series Cat-Back Exhaust System 2018 Jeep Wrangler JL Unlimited 4-Door 3.6L
$62395
Ships on 11/03/2026
Lowest Price GuaranteeJeep
- Outlaw Series Cat-Back Exhaust System
- 2018 Jeep Wrangler JL Unlimited 4-Door 3.6L
- 2.500 in. 409S Stainless Steel Tubing
- 3 in. Polished 304 Stainless Steel Tip
- Single Rear Exit
Will Not Fit 2-Door Models.
Aggressive Race-Oriented Exhaust System
Flowmaster Outlaw Series Exhaust Systems feature race-bred components that ensure minimal flow restriction (slight sound reduction) over open exhaust tubing on vehicles without catalytic converters. With easy fit in mind, these systems are mandrel-bent for maximum performance and mount using stock hanger locations. Outlaw systems are dyno-tuned to improve throttle response, deliver an ultra-aggressive interior/exterior tone, and include all necessary parts and hardware for easy installation.
Part TypeExhaust System
Product LineFlowmaster Outlaw Series Exhaust Systems
BrandFLOWMASTER
Package Height9.75
Package Width15.25
Package Length49.0
Weight22.3 PG
Muffler Body Diameter4.50 in.
Tailpipe Diameter (In.)2.5
Muffler Inlet Inside Diameter2.50 in.
Hangers IncludedYes
Main Piping Diameter2.50 in.
Tail Pipe QuantitySingle
Inlet TypeFlanged
Exhaust Tip Material304 Stainless Steel
Catalytic Converter Quantity0
Muffler Body Length11 in.
Sound LevelAggressive / Moderate
Muffler Body Material409 Stainless Steel
Exhaust Tip CutAngled
Gasket Or Seal IncludedNo
Exhaust Tip IntercooledNo
Pipe ColorSilver
Muffler Quantity1
Muffler Inlet Outside Diameter2.63 in.
Muffler Flanged OutletNo
Exhaust Tip ResonatedNo
Muffler Outlet LocationCenter
Catalytic Converter IncludedNo
Heat Shield IncludedNo
Part CategoryPerformance Parts
Exhaust Tip WallSingle Wall
Exhaust Tip Quantity1
Muffler Inlet LocationCenter
Exhaust Tip FinishPolished
Exhaust Tip EdgeAngle Cut
Valve IncludedNo
Muffler TypeReflection
Pipe Material409 Stainless Steel
Muffler Body Width4.50 in.
Tail Pipe Tapered OutletNo
Muffler Body ShapeRound
Mounting Bracket IncludedNo
Muffler Outlet Quantity1
Muffler FinishBlack High-Temperature Paint Finish
Mount TypeUses Factory Hangers
Clamps IncludedYes
Tip Outlet Size3 in (76.2 mm)
FinishNatural
Exit StyleSingle Out Rear
Muffler Body Height4.50 in.
Clamping TypeFlat Band
Muffler Flanged InletNo
Spring Bolt Kit IncludedNo
Muffler SeriesOutlaw
Muffler IncludedYes
Exhaust Tip ConnectionWelded
Tail Pipe Outlet Outside Diameter2.50 in.
Jeep Jl1
Valve TypeNot Applicable
Intermediate Pipe Diameter2.5 in (63.5 mm)
Exhaust Tip Diameter3 in.
Part FitmentDirect Fit
Vendor Part Number817818
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
