
G8X S58 Stainelss Steel Valved Axle-Back Exhaust - M2/M3/M4
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G8X S58 Stainless Steel Valved Axle-Back Exhaust – M2/M3/M4
Elevate your BMW M2, M3, or M4's performance and auditory experience with the G8X S58 Stainless Steel Valved Axle-Back Exhaust. Expertly crafted from premium T304 stainless steel, this axle-back system is designed to enhance exhaust flow, resulting in improved horsepower and torque gains. The valved design allows for dynamic control over your vehicle's exhaust note, offering a refined tone during casual drives and an aggressive roar during spirited accelerations.
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Enhanced Exhaust Flow: The system features 76mm (3-inch) mandrel-bent piping, reducing backpressure and promoting smoother exhaust flow, leading to noticeable performance improvements.
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Valved Design: Utilizes the factory valve operation, enabling seamless transitions between subdued and aggressive exhaust notes, tailored to your driving preferences.
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Premium Construction: Constructed from high-quality T304 stainless steel, ensuring durability and resistance to corrosion.
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Quad Exhaust Tips: Equipped with four 100mm (4-inch) clamp-on tips, designed to fit perfectly within the factory cut-outs, enhancing the vehicle's rear aesthetics
Benefits:
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Performance Gains: Experience improvements in horsepower and torque, enhancing overall driving dynamics.
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Customizable Sound Profile: Adjust the exhaust note to suit your driving mood, from a refined tone to an aggressive growl.
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Aesthetic Enhancement: The quad-tip design adds a sporty and aggressive look to your vehicle's rear profile.
FAQs:
Is this exhaust system compatible with all G8X M2, M3, and M4 models?
Yes, it is specifically designed to fit BMW G87 M2, G80 M3, and G82/G83 M4 models equipped with the S58 engine.
Does installation require cutting or welding?
The axle-back system is designed for a direct fit when paired with compatible midpipes. However, if connecting to the factory midpipe, cutting may be required.
Will this exhaust system trigger a check engine light?
No, installing this axle-back exhaust will not trigger a check engine light, as it retains the factory valve operation and does not interfere with emissions systems.
Is professional installation recommended?
While the system is designed for straightforward installation, professional installation is recommended to ensure optimal fitment and performance.
THIS PRODUCT IS FOR OFFROAD USE ONLY

G8X S58 Stainelss Steel Valved Axle-Back Exhaust - M2/M3/M4
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
Orders take 24–48 hours to process once placed. Made-to-order items begin production after processing, while in-stock items are prepped, packaged, and ship within 3–4 days from our Oceanside, CA location (please allow extra time for packages to arrive during high-volume periods). Some items may be backordered—if so, we’ll email you with status and options. Freight items such as wheels, exhausts, trunks, and hoods require additional handling time and may ship separately.
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Customer Support
Real BMW-savvy humans here. We’re available Mon–Fri, 10am–5pm PT by email and phone/text for install questions, fitment help, or order updates. Send your year/model/trim (VIN if handy) and we’ll point you to the right parts fast.
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FAQ’s
Quick answers to the most common questions: fitment & compatibility, order changes/cancellations, build & lead times, international shipping & duties, and returns/exchanges. Start there for instant clarity—then reach out if you still need a hand.
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Contact Us
Need help choosing parts or tracking an order? Send an email to our support team, support@cencalmotorsport.com
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About Us
Cen-Cal Motorsport isn’t just a parts shop—it’s a lifestyle for BMW enthusiasts who crave performance, precision, and style. We’re all about taking your BMW to the next level with premium parts that bring out the beast under the hood while keeping its luxury vibes on point.
Your BMW isn’t just a car—it’s an experience. Whether you're upgrading for speed, handling, or simply flexing on the road, we’ve got the gear to match your passion.
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