Stillen® 504399 - Stainless Steel Axle-Back Exhaust System with Split Rear Exit

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Stainless Steel Axle-Back Exhaust System with Split Rear Exit (504399) by Stillen®. Exhaust System Type: Axle-Back. Exhaust Tubing Material: Stainless Steel. Exhaust System Sound: Aggressive / Loud. Maxima with the sound youre looking for and deliver increased performance and efficiency as well. If a more aggressive exterior exhaust note combined with a more subtle interior effect is what youre after, look no further than the Stillen Stainless Steel Axle Back Exhaust System for 2016 Nissan Maxima A367. It is a high quality system that is easier on the budget and your passengers ears than a full cat-back system. The performance gains are not as significant compared to Stillen cat-back system, but the axle-back system is the perfect solution for those who value a more luxurious and quiet cabin feel along with enhanced sound. Increase the performance of your vehicle with the Stillen Cat Back Exhaust System. This Stillen Cat Back Exhaust System improves the sound and performance of the vehicle. Stillen pride ourselves in designing an all-new cat back exhaust system that strikes a great balance between the performance minded enthusiast and daily drivability.



Exhaust System Type: Axle-Back
Exhaust Tubing Material: Stainless Steel
Exit Location: Split Rear
Exhaust System Sound: Aggressive / Loud
Tip Finish: Polished
Tip Type: Double Wall


  • Authoritative Tone Under Throttle
  • Increase of Horsepower and Torque
  • Designed to provide long-lasting service life
  • Made utilizing state-of-the-art equipment
  • Engineered to offer the ultimate in strength and reliability

Stillen love style as much as you do, so Stillen finished the 2016 Maxima exhaust with a 4-inch angle cut, dual wall, tapered exhaust tip. It fills the factory exhaust cut out nicely; delivering an aggressive look that matches the enhanced exhaust note. At the same time, it imparts a higher quality feel worthy of the restyled Maxima.
And if you want to further personalize your Maxima, Stillen recommend the Stillen Matte Black Rear Valance Diffuser for 2016 Nissan Maxima KB12818MB, designed to complement Stillen exhausts systems with perfect fit and aggressive styling. Constructed from 304 stainless steel, the Stillen axle-back exhaust system for the 2016 Maxima is built to last through all weather conditions for years to come. Stillen confidently offer a limited lifetime warranty against rust through and manufacturer defects.

Power is the primary purpose of the Stillen Exhaust System on your car. However, sound is a close second. With an authoritative growl that has become easily recognized at the Stillen trademark sound. This exhaust is mild at low RPM and comes alive when pressed into the higher RPM ranges. The free flowing mufflers keep the sound down when you want to be civilized but let you be heard when you want to let loose.

Stillen® Company founder Steve Millen has been globally racing at the professional level for over 30 years. From Formula Fords in Singapore, Rally Cars in Africa, Trucks in football stadiums, to Nissan Prototypes at Le Mans and the 24 Hours of Daytona. These are just some of Steve's victory credits. Steve captured the prestigious title of IMSA GT Driver's Championship in both 1992 and 1994 driving his Cunningham Racing prepared Nissan 300ZX Twin Turbo racecar. His lengthy list of wins has earned him a new title that may remain intact for decades to come - "The All-Time Winningest Driver in IMSA GT History."

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Stillen products are covered by a Limited Lifetime Warranty, during which its products are warranted to be free from defects in material or workmanship. This Warranty does not apply to any products that have been subjected to misuse, mishandling, misapplication, neglect (including but not limited to improper maintenance), improper installation, or alterations.
The Warranty is granted to the end-user and applies to products which are purchased, installed, and used for the purposes for which they are originally designed. This Warranty covers defects arising under normal use and does not cover malfunctions or failures resulting from misuse, abuse, neglect, improper installation, or incorrect maintenance.
During the Warranty period, Stillen will repair or replace, at no charge, a product that is defective in materials or workmanship. Stillen reserves the right to either repair or replace a defective component at its discretion and reserves the right to substitute an equivalent product under the terms of this Warranty.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

Vehicle Fitment

Maxima 2016-2018



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Stillen® - Stainless Steel Axle-Back Exhaust System
Stillen® 504399 - Stainless Steel Axle-Back Exhaust System with Split Rear Exit
Average Rating: 5 of 5
5 of 5
Awesome Exhaust.
Stillen® 504399 - Stainless Steel Axle-Back Exhaust System with Split Rear Exit
Direct fit. Nice mellow tone at idle. Deep tone during acceleration. No drone.
Posted by (San Jose, CA) / 2016 Nissan Maxima
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