Dinan 18-25 BMW X3 M40i/X4 M40i (G01/G02) Valved Catback Exhaust System - Black Tips

While looks are important, the auditory advantages are what any enthusiast is truly after with an exhaust system, and the Dinan offering for the G01/G02 M40i platform delivers in spades. For not only aural enhancement via the elimination of the central collector/resonator, but also weight savings and simplicity. The stock single-to-dual pipe setup has been abandoned in favor of an enlarged, straight, unrestricted, and freer flowing single pipe system. This pathway feeds into a Helmholtz equipped muffler that limits frequencies associated with drone, as well as assists in altering the overall tone of the setup to deliver the signature low Dinan rumble. The no-nonsense design allows versatility in volume levels with the retained factory valve functionality. Go from refined when cruising (low RPM’s) to rowdy when in it (high RPM’s), with ease. Or better yet, pair the system with an exhaust valve remote and have full control of elevating or reducing the sound! When open, the system behaves as a straight pipe solution that promotes maximum flow and volume for an exhilarating and forceful chorus. When the valve is closed however, exhaust gases are wholly redirected through the muffler and emit more tempered vocals acceptable for even the most sensitive ears. It is the perfect blend of civility when cruising or the full spectrum of auditory delight when in the throttle. No matter the situation, the Dinan valved cat-back exhaust system is the answer for the discerning enthusiast looking for sound without sacrifice. Stainless Steel - Black Tips - G01/G02

• Factory-like fitment with included mounting hardware and valve componentry for both pre-LCI and LCI compatibility
• Quad 3.75-inch (95mm) double-walled, black ceramic coated, clamp-on tips with laser engraved Dinan logo
• Factory valve functionality retained; refined or rowdy from the same exhaust
• 7-pounds lighter than the stock system (60-pounds vs. Dinan: 53-pounds)
• Enjoyably louder, sportier sound w/ a delightful octave drop
• Drone abatement technologies used to reduce cabin resonance
• Larger diameter piping for increased flow (83mm vs. 80mm)
• Factory resonator/collector removed for increased volume
• Direct bolt-on w/ no cutting or welding required
• Maximum gains of +6 HP and +5 lb-ft of torque
• 100% 304 Stainless Steel construction

Enhance your BMW X3 M40i or X4 M40i with the Dinan G01/G02 Valved Catback Exhaust System, designed for optimal sound and performance. Crafted from 100% stainless steel, this system offers a seamless fit with factory mounting hardware and valve components compatible with both pre-LCI and LCI models. The quad 3.75-inch double-walled black ceramic-coated tips feature laser engraving of the Dinan logo, adding a refined aesthetic to your vehicle’s rear end. The larger 83mm diameter piping compared to the stock 80mm increases airflow, resulting in improved horsepower and torque, with gains of up to 6 HP and 5 lb-ft respectively. The removal of the factory resonator and collector amplifies the exhaust volume, creating a sportier sound profile that resonates with enthusiasts seeking an exhilarating auditory experience. The system’s design incorporates drone abatement technologies to minimize cabin resonance, ensuring comfort during everyday driving. Its straightforward bolt-on installation requires no cutting or welding, making it a practical upgrade for any skilled DIY enthusiast or professional installer. The included factory valve functionality allows you to switch between refined and aggressive exhaust notes, giving you control over your driving experience. When the valves are open, the exhaust behaves as a straight pipe, delivering maximum flow and volume for a dynamic, forceful sound. When closed, gases are routed through the muffler, producing a more subdued tone suitable for daily driving. For even greater control, pairing this system with an exhaust valve remote allows you to customize your sound profile on the fly. Whether cruising or spirited driving, this system seamlessly balances civility and performance, making it the ideal upgrade for discerning BMW owners. The black tips provide a striking contrast and durability, completing the aggressive look and sound of your vehicle.

Features:

• Factory-like fitment with included mounting hardware and valve componentry for both pre-LCI and LCI compatibility

• Quad 3.75-inch double-walled black ceramic coated tips with laser engraving of Dinan logo

• Retains factory valve functionality; adjustable between refined and aggressive exhaust tones

• Lighter weight than stock at only 53 pounds, improving overall vehicle efficiency

• Increases exhaust volume and enhances sound with a delightful octave drop

• Incorporates drone abatement technologies to reduce interior resonance

• Enhanced airflow with larger 83mm piping for improved performance

• Complete removal of factory resonator and collector for increased volume and tone

• Direct bolt-on installation requiring no cutting or welding

• Maximum performance gains of +6 HP and +5 lb-ft of torque

Fitment:
BMW X3 M40i 2018
BMW X3 M40i 2019
BMW X3 M40i 2020
BMW X3 M40i 2021
BMW X3 M40i 2022
BMW X3 M40i 2023
BMW X3 M40i 2024
BMW X4 M40i 2019
BMW X4 M40i 2020
BMW X4 M40i 2021
BMW X4 M40i 2022
BMW X4 M40i 2023
BMW X4 M40i 2024
BMW X4 M40i 2025