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MagnaFlow Magnapack Sys C/B 94-98 Ford Mustang Gt/Cobra 4.6L

SKU: MAG15677

Exhaust Systems

MAG Catback Exhaust...

MagnaFlow Magnapack Sys C/B 94-98 Ford Mustang Gt/Cobra 4.6L

SKU: MAG15677

Exhaust Systems

MAG Catback Exhaust...

A$2,339.05
LAST ONE! Est Ship 3-5 days. In stock at 2 locations (3 available)

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Description

MagnaFlow Magnapack Sys C/B 94-98 Ford Mustang Gt/Cobra 4.6L

The MagnaFlow Ford Mustang Competition Series Cat-Back Performance Exhaust System brings an aggressive, attention-grabbing edge to the deep resonant exhaust note we're so well known for. This exhaust kit is designed to enhance your 4.6L, 5.0L Ford Mustang with dyno-proven performance made possible thanks to fast-flowing mandrel bent 2.5in. main piping and 2 Straight-Through mufflers ending in a Dual Split Rear exit with 3.5in. Polished Clamp-On Single Wall Angle Cut Edge tips featuring a sporty finish. The exhaust system's cat-back layout replaces your ride's exhaust system from near the catalytic converter on back. Exhaust system 15677 is engineered to make your vehicle's engine produce Aggressive exterior and Moderate interior sound levels, befitting its competition-oriented design. 15677's direct-fit design makes installation a breeze thanks to the use of advanced 3D scanning techniques. This performance exhaust system is made of 100% durable and corrosion-resistant stainless steel and produced using CNC precision robotic manufacturing, all backed by MagnaFlow's limited lifetime warranty. Please check to ensure compliance with local noise regulations.

Additional Information

Magnaflow Competition Series Stainless Cat-Back System

Part Type

Exhaust System Kit

Product Overview

The MagnaFlow 1994-1998 Ford Mustang Competition Series Cat-Back Performance Exhaust System 15677 brings an aggressive, attention-grabbing edge to the deep resonant exhaust note we're so well known for. This exhaust kit is designed to enhance your 4.6L, 5.0L 1994-1998 Ford Mustang with dyno-proven performance made possible thanks to fast-flowing mandrel bent 2.5in. main piping and 2 Straight-Through mufflers ending in a Dual Split Rear exit with 3.5in. Polished Clamp-On Single Wall Angle Cut Cut Edge tips featuring a sporty finish. The exhaust system's cat-back layout replaces your ride's exhaust system from near the catalytic converter on back. Exhaust system 15677 is engineered to make your vehicle's engine produce Aggressive exterior and Moderate interior sound levels, befitting its competition-oriented design. 15677's direct-fit design makes installation a breeze thanks to the use of advanced 3D scanning techniques. This performance exhaust system is made of 100% durable and corrosion-resistant stainless steel and produced using CNC precision robotic manufacturing, all backed by MagnaFlow's limited lifetime warranty. Please check to ensure compliance with local noise regulations.

Additional Application Notes
• 2.5 in.; Incl. Tubing/Dual 4x4x14 in. Mufflers/Tailpipes/Dual 3.5 in. Round Tips; Dual Split Rear Exit; Stainless
• 2.5 in.; Incl. Tubing/Dual 4x4x14 in. Mufflers/Tailpipes/Dual 3.5 in. Round Tips; Dual Split Rear Exit; Stainless;Meets Or Exceeds CARB Emissions Requirements

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Data: v4.2 - Upd: 2026-11-08 04:22:37

Features

  • Aggressive exterior sound
  • Crafted From 409 Stainless Steel With All Mandrel-Bent Tubing
  • Increased Horsepower And Torque

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

Anticipated Ship Out Time:Approximately 1-2 Days
Attachment Style:Bolt-On
Attachment Type:Bolt-On
Catalytic Converter Quantity:0
Clamp Type:Band Clamp
Clamping Type:Band Clamp
Clamps Included:Yes
Color/Finish:Stainless
Components:Band Clamp=6
Description:Competition Series Stainless Cat-Back System
Exhaust Inlet Connection Type:Bolt-On
Exhaust Pipe Material:Stainless
Exhaust Tip Connection:Clamp-On
Exhaust Tip Cut:Angle Cut
Exhaust Tip Diameter:3.5
Exhaust Tip Edge:Cut Edge
Exhaust Tip Finish:Polished
Exhaust Tip Intercooled:No
Exhaust Tip Length:16
Exhaust Tip Material:Stainless Steel
Exhaust Tip Quantity:2
Exhaust Tip Resonated:No
Exhaust Tip Shape:Round
Exhaust Tip Wall:Single Wall
Exhaust Type:Dual
Exit Location:Dual Split Rear
Exit Position:Dual Split Rear
Exit Quantity:Dual
Exit Style:Dual Split Rear
Finish:Stainless
Gasket Included:No
Gasket Or Seal Included:No
Hangers Included:Yes
Inlet Connection Type:Bolt-On
Inlet Inside Diameter:2.500 in.
Inlet Type:Bolt-On
Main Piping Diameter:2.500 in.
Material:Stainless
Mounting Bracket Included:No
Muffler Body Diameter:4.000 in. x 4.000 in.
Muffler Body Finish:Polished
Muffler Body Height:4.000 in.
Muffler Body Length:14.000 in.
Muffler Body Material:Stainless Steel
Muffler Body Shape:Round
Muffler Body Width:4.000 in.
Muffler Count:2
Muffler Finish:Brushed
Muffler Material:Stainless Steel
Muffler Quantity:2
Muffler Type:Straight-Through
Outlet Outside Diameter:3.500 in.
Part Number:mag15677
Pipe Material:Stainless Steel
Recommended Use:Performance
Series:Competition
Sound Level:Aggressive
Subtitle:Cat-Back Performance Exhaust System
Subtitles:Cat-Back
System Type:Cat Back
Tail Pipe Diameter:2.500 in.
Tip Diameter:3.500 in.
Tip Finish:Polished
Tip Length:16.000 in.
Tip Material:Stainless Steel
Tip Quantity:2
Tip Shape:Round
Tip Type:Clamp-On
Title:MagnaFlow 1994-1998 Ford Mustang Competition Series Cat-Back Performance Exhaust System
Tubing Diameter:2.500 in.
Type:Cat-Back
Valve Included:No
Valve Type:None
Warranty:Lifetime

Product Downloads

# Document Type Download
1. Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-08 05:00:59

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Magnaflow, MagnaFlow Exhaust Products, MAGNAFLOW PERF EXHAUST, Magnaflow Performance
StreetFX SKU mag15677
SFX Item ID 4284592
Accounting SKU mag-15677
Manufacturer SKU 15677
Manufacturer UPC 841380004833
Alternative References 15677, MFL15677, MPE-15677

Exhaust System, Magnapack, Cat-Back, Stainless Steel, Polished Stainless Tips, Ford, 4.6, 5.0L, Kit

MagnaFlow Competition Series exhaust systems are designed for those seeking maximum performance, reduced mass, and an aggressive exhaust note that demands attention. They feature all mandrel-bent tubing and 409 stainless steel construction. These kits are available in numerous configurations, including cat-back and rear axle-back styles; single or dual mufflers; and one, two, or four outlets. Many tip options are offered, as well. MagnaFlow Competition Series exhausts increase your horsepower and torque for better results on the track, and they carry a lifetime construction warranty. (The systems may not comply with all local or federal noise requirements.) Order the sizes and setup tailored for fitment on your specific make and model.

Product Attributes
BrandMagnaFlow
Manufacturer's Part Number15677
Part TypeExhaust Systems
Product LineMagnaFlow Competition Series Exhaust Systems
UPC841380004833
System Material409 stainless steel
System StyleCat-back
Exhaust TypeDual
Exit LocationRear
System FinishNatural
Catalytic Converter(s) IncludedNo
Intermediate Pipe Diameter (in.)2.50 in.
Muffler IncludedYes
Muffler QuantityTwo
Muffler ConfigurationSingle inlet/Single outlet
Muffler StylePerforated tube with packing
Muffler Material409 stainless steel
Muffler FinishPolished
Hardware IncludedYes
Tailpipe Diameter (in.)2.50 in.
Tip IncludedYes
Tip Outlet Size (in.)3.50
Tip Quantity2
Tip ShapeRound
Tip CutStraight
Tip Edge StyleNon-rolled edge, single-wall
Tip Material304 stainless steel
Tip ColorPolished
RemanufacturedNo
QuantitySold as a kit.
NotesDepending on vehicle configuration, some modifications may be required. See installation instructions for details, if applicable. Magnapack system uses round style mufflers for a more aggressive tone. Designed for original equipment components. Aftermarket headers Y or H pipe may require fabrication for proper fit. Must re-use original fasteners and rubber insulators.
Special AttentionIt is illegal to install parts or components that bypass, defeat, or render inoperative the manufacturers’ technology and design necessary to reduce vehicle emissions to meet state and federal Clean Air Act standards.

Manufacturer Attributes
Catalytic Converter Quantity 0
Muffler Body Length 14
Exhaust Tip Length 16
Exhaust Tip Quantity 2
Muffler Quantity 2
Main Piping Diameter 2.5
Exhaust Tip Diameter 3.5
Muffler Body Height 4
Muffler Body Width 4
Exhaust Tip Cut Angle Cut
Inlet Type Bolt-On
Muffler Finish Brushed
Type Cat-Back
Exhaust Tip Connection Clamp-On
Exhaust Tip Edge Cut Edge
Exit Style Dual Split Rear
Gasket Or Seal Included No
Valve Included No
Mounting Bracket Included No
Exhaust Tip Resonated No
Exhaust Tip Intercooled No
Exhaust Tip Finish Polished
Exhaust Tip Shape Round
Exhaust Tip Wall Single Wall
Exhaust Tip Material Stainless Steel
Pipe Material Stainless Steel
Muffler Body Material Stainless Steel
Muffler Type Straight-Through
Clamps Included Yes
Hangers Included Yes
Clamping Type Band Clamp
Series Competition
Title MagnaFlow 1994-1998 Ford Mustang Competition Series Cat-Back Performance Exhaust System
Manufacturer Designation Competition Series Stainless Cat-Back System
Product Class Exhaust System Kit
Construction/Type Magnaflow Competition Series Stainless Cat-Back System
Product Outline Crafted from 409 stainless steel with all mandrel-bent tubing
Increased horsepower and torque
Aggressive exterior sound
Vehicle Brief Exhaust System
Market Description The MagnaFlow 1994-1998 Ford Mustang Competition Series Cat-Back Performance Exhaust System 15677 brings an aggressive, attention-grabbing edge to the deep resonant exhaust note we're so well known for. This exhaust kit is designed to enhance your 4.6L, 5.0L 1994-1998 Ford Mustang with dyno-proven performance made possible thanks to fast-flowing mandrel bent 2.5in. main piping and 2 Straight-Through mufflers ending in a Dual Split Rear exit with 3.5in. Polished Clamp-On Single Wall Angle Cut Cut Edge tips featuring a sporty finish. The exhaust system's cat-back layout replaces your ride's exhaust system from near the catalytic converter on back. Exhaust system 15677 is engineered to make your vehicle's engine produce Aggressive exterior and Moderate interior sound levels, befitting its competition-oriented design. 15677's direct-fit design makes installation a breeze thanks to the use of advanced 3D scanning techniques. This performance exhaust system is made of 100% durable and corrosion-resistant stainless steel and produced using CNC precision robotic manufacturing, all backed by MagnaFlow's limited lifetime warranty. Please check to ensure compliance with local noise regulations.

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