Fitment

• 2011-2016 Ford F-250 / F-350 / F-450 Super Duty 6.7L Powerstroke
• Does NOT fit Cab & Chassis configurations
• Note: For maximum performance, pair with a DPF/CAT delete pipe (off-road use only).

Description

Want deep, aggressive exhaust tone for your 2011–2016 6.7L Powerstroke while keeping your factory DPF? Upgrade to the SPETUNER DPF-back exhaust system. Built specifically for owners who want to retain their OEM diesel particulate filter and improve the sound, flow, and appearance of their truck, this bolt-on upgrade delivers a bold, performance-focused exhaust note without emissions deletion.

Choose between economical 409 stainless steel or premium 304 stainless steel for maximum long-term durability. Complete with a black-coated exhaust tip for a sharp, custom look and an enlarged 4-inch diameter for improved flow and sound, this system gives you the powerful rumble you want—100% DPF-friendly.

Key Features

• Improved Exhaust Flow – Reduces backpressure to support better throttle response, torque, and efficiency.
• Heavy-Duty Stainless Steel – Available in T409 (great value) or T304 (superior rust resistance, ideal for salt / coastal areas).
• Simple Bolt-On Installation – Uses factory-style hangers for a precise, secure fit with basic hand tools.
• Aggressive Yet Controlled Sound – Delivers a deep, muscular tone without annoying cabin drone.
• OEM+ Perfect Fit – Engineered to match factory mounting points and retain your stock DPF.
• 100% DPF Compatible – Designed to work with your factory emissions system.
• Black Coated Exhaust Tip – Adds a rugged, custom look to the rear of your truck.

Material Comparison (T304 vs T409 Stainless Steel)

• Corrosion Resistance
  • T304: 18% chromium + 8% nickel → Superior corrosion protection
  • T409: 11% chromium + trace titanium → Good corrosion resistance
• High Temperature Resistance
  • T304: Withstands heat up to 870°C
  • T409: Withstands heat up to 800°C
• Oxidation & Salt Resistance
  • T304: Excellent performance in high-heat, high-salt, and coastal environments
  • T409: Good performance for regular daily driving
• Service Life
  • T304: Long service life of 10–15+ years
  • T409: Reliable lifespan of 7–12 years

Package Include

• 4" Extension Pipe × 1
• Over-Axle Pipe × 1
• Tail Pipe × 1
• Exhaust Hanger × 1
• Black Exhaust Tip × 1
• 4" Wide Band Clamps × 2
• Gasket × 1
• 7/16" Hex Bolts × 3
• 7/16" Hex Nuts × 3

Installation

4'' DPF Back Exhaust for 2011-2016 6.7L Powerstroke

FAQ

Q: Does this DPF-back exhaust remove or delete the factory DPF?
A: No. This is a true DPF-back system, meaning it only replaces the exhaust components after the DPF. It does not modify or remove emissions equipment.

Q: Will this improve performance or MPG?
A: While gains are moderate with the factory DPF still installed, the 4-inch smooth-flow design reduces backpressure, which can improve throttle response, low-end torque, and overall exhaust efficiency.

Q: Is welding required? Do I need professional installation?
A: No welding is needed. This is a bolt-on system, though minor cutting of the factory exhaust may be required. It is DIY-friendly with common tools, but professional installation ensures the cleanest fit.

Q: Will this make my truck significantly louder?
A: You will notice a deeper, more aggressive tone than stock, but the DPF and catalytic converters keep volume controlled and street-friendly. No excessive noise or drone.