# Performance Parts Buyer's Guide for the 2019-2023 Nissan Maxima **By Nathan Fette** · 2019-12-24 # **Performance and Styling Parts for the 2019+ Nissan Maxima** The complete lineup of STILLEN performance and exterior styling upgrades for the [2019+ Nissan Maxima](https://stillen.com/collections/all/Nissan-Maxima-2019) is now available. It was only natural that STILLEN would develop a new line of power, performance, and styling products for the updated Maxima. Our goal was straightforward: deliver meaningful performance gains while adding an aggressive, race-inspired edge to the Maxima's already sharp exterior design. ## **Cat-Back Exhaust System and Axle-Back Exhaust System** **![](https://cdn.shopify.com/s/files/1/0144/4275/8230/files/Cat_Back_TN_v1.jpg?v=1782157662)** ### **Cat-Back Exhaust System - Part# 504392** **![](https://cdn.shopify.com/s/files/1/0144/4275/8230/files/504403_IMG02_2019_Nissan_Maxima_Axle_Back_Exhaust_v1.jpg?v=1782157662)** ### **Axle-Back Exhaust System - Part# 504403** Add real power, an aggressive exhaust note, and long-lasting good looks with the [STILLEN Cat-Back Exhaust System](https://stillen.com/products/2019-nissan-maxima-stillen-cat-back-exhaust-3-5l-504392) and [STILLEN Axle-Back Exhaust System](https://stillen.com/products/2019-nissan-maxima-axle-back-exhaust-system-504403) for the 2019-2020 Nissan Maxima. Both systems are constructed from durable, high-quality stainless steel for lasting corrosion resistance and a premium finish. The [Axle-Back Exhaust System](https://stillen.com/products/2019-nissan-maxima-axle-back-exhaust-system-504403) features a 2-1/4-inch stainless steel inlet pipe and polished mufflers, finished with a polished 2-3/8-inch straight-cut exhaust tip that fills the factory exhaust cutout cleanly. The result is an enhanced exhaust sound and a more premium, performance-oriented look that suits the restyled Maxima perfectly. ![](https://cdn.shopify.com/s/files/1/0144/4275/8230/files/KB12845_IMG_01_2019_Nissan_Maxima_Front_Splitter_v1-700x486.jpg?v=1782157662) ## **Front Splitter - Part# KB12845** The STILLEN [Front Splitter for the 2019 Nissan Maxima](https://stillen.com/products/2019-nissan-maxima-front-lip-splitter-matte-black-kb12845) was designed to complement the factory front bumper's natural lines while adding a noticeably more aggressive, race-inspired appearance. Built from durable and flexible polyurethane, this [front lip splitter](https://stillen.com/products/2019-nissan-maxima-front-lip-splitter-matte-black-kb12845) provides an easy way to dramatically improve the look of the front end without permanent modification. ![](https://cdn.shopify.com/s/files/1/0144/4275/8230/files/KB12845_IMG_07_2019_Nissan_Maxima_Front_Splitter_v1-700x486.jpg?v=1782157662) It comes finished in matte black and is ready to install out of the box, though it can be prepped and painted to match your vehicle's color if preferred. Pre-installed 3M automotive trim foam tape and included adhesion promoter make the installation process fast and straightforward. Mounting screws are also included to ensure the splitter is fully and securely attached to the front bumper. ![](https://cdn.shopify.com/s/files/1/0144/4275/8230/files/KB12846_IMG01_2019_Nissan_Maxima_Rear_Diffuser_v1-700x486.jpg?v=1782157662) ## **Rear Diffuser - Part# KB12846** The [STILLEN Rear Diffuser for the 2019 Nissan Maxima](https://stillen.com/products/2019-2021-nissan-maxima-rear-diffuser-matte-black-kb12846mb) dramatically transforms the appearance of the rear bumper with a race-inspired, wide-body look. The diffuser's aggressive fins and deep air channels are designed to help reduce aerodynamic drag and improve rear downforce while giving the Maxima a wider, more planted stance. ![](https://cdn.shopify.com/s/files/1/0144/4275/8230/files/KB12846_IMG06_2019_Nissan_Maxima_Rear_Diffuser_v1-700x486.jpg?v=1782157662) Like the front splitter, the [Rear Diffuser](https://stillen.com/products/2019-2021-nissan-maxima-rear-diffuser-matte-black-kb12846mb) is molded from durable polyurethane and installs without any cutting, trimming, or permanent modification to the vehicle. It integrates cleanly with the factory exhaust cutout and pairs perfectly with the [Front Splitter](https://stillen.com/products/2019-nissan-maxima-front-lip-splitter-matte-black-kb12845) to create a cohesive, aggressive exterior package that sets your Maxima apart from the factory. ## **![](https://cdn.shopify.com/s/files/1/0144/4275/8230/files/402967_IMG04_16_18_Nissan_Maxima_Intake_Oil_v1-700x486.jpg?v=1782157662)** ## **Hi-Flow Cold Air Intake Kit - Part# 402967 / 402967DF** The [STILLEN Hi-Flow Cold Air Intake Kit](https://stillen.com/collections/intake/Nissan-Maxima-2019) for the 2019 Nissan Maxima is engineered to increase engine performance by improving airflow and reducing intake air temperatures. This [performance cold air intake](https://stillen.com/collections/intake/Nissan-Maxima-2019) is optimized to deliver the best possible horsepower and torque gains for the Maxima's 3.5L V6. The system retains the factory intake tract, which feeds into the STILLEN polyurethane air duct to ensure the coldest possible air charge reaches the engine. ![](https://cdn.shopify.com/s/files/1/0144/4275/8230/files/402967_IMG05_16_18_Nissan_Maxima_Intake_Oil_v1-700x486.jpg?v=1782157662) A polished aluminum intake tube adds to the appearance and durability of the unit, and a genuine high-flow air filter allows your 2019 Nissan Maxima to breathe cleanly and freely for improved throttle response and power output. ![](https://cdn.shopify.com/s/files/1/0144/4275/8230/files/304403_IMG01_2019_Nissan_Maxima_Rear_Sway_Bar_v1-700x486.jpg?v=1782157662) ## **Rear Sway Bar - Part# 304402** The [STILLEN Rear Sway Bar for the Nissan Maxima](https://stillen.com/collections/suspension/Nissan-Maxima-2019) is a key suspension upgrade for any enthusiast looking to sharpen cornering performance and reduce body roll. OEM sway bars are often undersized for optimal performance, and the [STILLEN Sway Bar](https://stillen.com/collections/suspension/Nissan-Maxima-2019) addresses this directly. By helping control the weight transfer that occurs during cornering, the sway bar allows you to carry more speed through familiar corners with greater confidence and control. The improved weight distribution and traction from a properly sized [aftermarket sway bar](https://stillen.com/collections/suspension/Nissan-Maxima-2019) makes a noticeable difference on both the street and the track. STILLEN sway bars are manufactured from high-strength aircraft-grade steel, providing maximum torsional stiffness and long-term durability. ![](https://cdn.shopify.com/s/files/1/0144/4275/8230/files/304403_IMG05_2019_Nissan_Maxima_Rear_Sway_Bar_v1-700x486.jpg?v=1782157662) If you have any questions about STILLEN performance and styling products for the 2019-2023 Nissan Maxima or any other [STILLEN product](https://stillen.com/), give us a call at (866) 250-5542 or email sales@stillen.com. **Tags:** Air Intake, Axle-Back Exhaust, Buyers Guide, Cat-Back Exhaust, Front Splitter, Maxima, Nissan, Rear Diffuser, Rear Sway Bar --- > Source: [STILLEN](https://stillen.com/blogs/news/performance-parts-buyers-guide-for-the-2019-2023-nissan-maxima)