APR MK7 Catback Exhaust without Valves & Rear Mufflers - CBK0018

  • $1,399.99
    Unit price per 


Valveless System

For the more track minded enthusiasts where weight, sound and price point all are highly desired metrics, the APR Valveless system is available. In this configuration the axle back portion of the exhaust has the mufflers and valves removed. Weight drops considerably and the system becomes more aggressive. With the factory DP in place, the system is louder and more aggressive, but thanks to the center Helmholtz chamber, drone is reduced, giving a more pleasant, yet aggressive driving experience. However, when upgrading to the APR Race DP, the system transforms and becomes unapologetically raw with maximum aggression – A true track enthusiast’s dream.

The APR Catback Exhaust System personalizes your vehicle’s looks, sound and performance. Beautifully hand-crafted T304-stainless-steel components adorn the system with stunning TIG-welding throughout. Our straight-through brushed-finished mufflers smooth the exhaust note to a deep growl, without adding restrictions, while our Helmholtz resonator reduces unwanted frequencies. Strong high-quality bracketry and OEM-style clamps hold the system steadily in place, making the install or removal a snap, and fitment simple, yet precise. A cast 3” to quad 2.5” rear splitter creates an ultra-smooth transition, steadily feeding exhaust gasses out of the system, while looking tidy from under the rear bumper. Our cast valve housings enable the vehicle to be fitted with the factory electronic valve actuators, retaining OEM valve operation. Removable 4" polished slash-cut exhaust tips finish the system, adding a classy motorsport-inspired touch to the rear of the vehicle. Optionally, this system can be configured without rear mufflers and valves at a reduced price point. 

Quick Facts

  • T304 stainless-steel construction
  • Argon-back-purged TIG welding throughout
  • Single 3" to quad 2.5" mandrel-bent brushed tubing
  • Ultra-smooth cast 3" to quad 2.5" splitter
  • Brushed-finished straight-through sound-absorption mufflers and Helmholtz frequency reducing resonator
  • Optional configuration removes the valves and rear mufflers
  • Polished 4" slash-cut exhaust tips (removable and upgradable)
  • Cast valve housings and brackets for OEM electronic actuators
  • Optional configuration removes the valves and rear mufflers
  • Rugged and precise mounting brackets
  • OEM style slip clamps and Torca AccuSeal T304 tip clamps
  • Direct fit to the OEM and APR Race DP exhaust systems with the included link and reducer pipes
  • Low-profile design, suitable for lowered vehicles
  • Larger diameter piping compared to stock
  • Larger diameter tips compared to stock
  • No increase in weight compared to stock and a good weight reduction on the valveless system
  • Designed, developed, assembled and quality controlled in-house
  • Easy to install
  • Limited lifetime warranty

System Overview

Our exhaust system uses larger piping compared to the factory exhaust system, yet weighs the same. We use 3" OD piping, which then splits to a quad 2.5" design. The factory system uses 2.57" piping before the resonator and 2.78” thereafter. Finally, our system’s 4" exhaust tips dwarf the factory oval tips, giving the rear of the vehicle a sportier look. The diagram below shows the system with rear mufflers and valves, which can optionally be removed.


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