Fi Exhaust M-Performance Full Exhaust System for 2021+ BMW G80/G82 M3/M4
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The Fi EXHAUST BMW G82 M4 valvetronic exhaust system combines our dual front mid-pipe catback with an M Performance–style muffler and diffuser for the ultimate blend of sound and styling. Designed from premium T304 stainless steel, the dual front mid-pipe features an integrated X-pipe, optimizing exhaust flow and creating a sharp, high-pitched motorsport tone that stands out from stock and other aftermarket systems.
This version is available with the M Performance–style triangular tip layout and matching diffuser, giving your G82 M4 the aggressive OEM+ look. It can be fitted on both M Performance and non-M Performance models. For non-M cars, the optional diffuser allows you to convert the classic quad exit into the signature M Performance design.
Paired with intake upgrades and ECU calibration, dyno testing has shown gains of up to +114 WHP and +72 lb-ft of torque, making this exhaust system a perfect choice for G82 M4 drivers seeking both performance and a factory-inspired motorsport appearance.
Please note that the actual product may vary in appearance depending on the year of the car and area. The exhaust system is also subject to changes to the design over an extended time period. Product pictures are for illustration purposes only.
Exhaust Setup Configurations
Q: What exhaust versions are available for the BMW G82 M4?
A: We offer three catback configurations:
Dual Front Mid-Pipe Catback – Featuring an X-pipe for smoother flow and sharper high-pitched tone.
Single Mid-Pipe Catback – Produces a deeper, throatier growl.
Single Mid-Pipe (Only) – For use with the factory muffler (cutting required).
The muffler is offered in two versions: a classic quad tip side exit or an M Performance–style triangular tip layout. The M Performance–style muffler can be fitted on both M Performance and non-M Performance models. For non-M Performance cars, drivers can add the optional M Performance diffuser to convert the classic quad exit into the distinctive M Performance look.
Each can be paired with either a catless downpipe or 200-cell catted downpipe for added performance and aggressiveness.
Q: What’s the difference between single and dual mid-pipe setups?
A: Dual Front Mid-Pipe Catback: Delivers a high-pitched, race-inspired tone with an aggressive character at high RPMs, thanks to the X-pipe design.
Single Mid-Pipe Catback: Offers a deeper, throatier note with a refined rasp signature of the S58.
Both are engineered for maximum flow and balanced sound.
FAQ
At T1 Motorsports, Not only do we specialize in aftermarket parts, but we also specialize in all mechanical repairs. We are a full-service mechanical shop, with skilled technicians geared towards OEM and Aftermarket enthusiasts.
How Long Will It Take to Receive My Order?
Shipping times depend on your location and our inventory levels.
- In-Stock at T1 Motorsports Orders: Orders for in-stock items will be shipped out on the same business day.
- Out-of-Stock & Distant Warehouse Orders: If an item is not in stock or is located in a warehouse, it will take 2-3 weeks to arrive at our facility before being shipped using the method selected at checkout.
- Order Tracking & Confirmation: Delivery details, including tracking information, will be provided in your confirmation email once the order has shipped.
For any shipping-related questions, please contact T1 Motorsports customer support.
My Order Is Taking Longer Than Expected. What Can I Do?
At T1 Motorsports, we strive to ensure every customer is satisfied with their experience.
- Before your order is confirmed, you will receive an email with the estimated arrival time (ETA) for your shipment.
- While we do our best to meet all delivery expectations, unexpected delays may occur. Rest assured, our team is always here to help and resolve any issues.
- If you have any concerns regarding your order, please contact us directly, and we’ll work to find the best solution for you.
What Is Your Order & Shipping Policy?
It is your responsibility to provide accurate shipping information at checkout. T1 Motorsports is not liable for any delays, lost shipments, or additional costs resulting from incorrect or incomplete addresses submitted during ordering.
What Is Your Return & Exchange Policy?
All processed orders that have not shipped will incur a 6% processing fee, this is mainly to cover any payment processing and cancelation fee with the manufacturer or warehouse. A processed order is an order that has already been put in our system and the product has been taken out of inventory and moving towards the packing and shipping face.
On special order or custom-made orders, the processing face is indicated when the manufacturer has received our order. Please be courteous and notify us ASAP if you wish to cancel any order(s) that were recently placed in order to prevent it from shipping out.
Due to the nature of racing and performance vehicles, no returns will be accepted on special order items, opened, installed, incomplete, or otherwise used products. If a product is ordered and not wanted, the UNUSED item can be returned within 30 days after the product has been delivered. This does not apply to SPECIAL ORDER items. Once the product is returned, you have two options for your refund:
You may have your purchase refunded back on your original payment method minus a 20% restocking fee of the total amount. In this case, please know that the initial shipping is not refundable (free shipping items still incur shipping chargers which MUST be deducted on a return). All items wanting to be returned MUST be reported within 30 days of delivery date. If you are still browsing and want an alternate product, we can provide you with a full credit minus shipping costs as a T1 Motorsports store credit. Some brands are excluded and may incur up to a 10% restocking fee. Please contact us to confirm.
On both refund options, a return shipping label may be provided if you are unable to ship the product(s) back using your own method of shipping. This shipping cost will be deducted from your total refund or credit.
What Should I Do If My Ordered Product Doesn't Fit?
We strive on making our fitment guide perfect. If you have any fitment issues regarding your product, please contact us by email or phone and we will solve your issue.
What is Your Order Pickup Policy?
- Once you receive an email confirming that your order is ready for pickup, you may collect it at our store during regular business hours.
- If you wish to designate someone else to pick up your order, please notify us via email with their full name. They will need to provide a valid ID at the time of pickup.
- To expedite the process, please bring your order number when arriving at the store.
- You have 60 days from the date your order status is updated to "Ready for Pickup" to collect your order, unless a different pickup date has been agreed upon.
Orders not picked up within the 60-day window will be deemed abandoned and canceled. No refunds will be issued for abandoned orders.
Armstrong G
Had a great experience purchasing winter tires and rims here. Straightforward communication, promise delivered.
AeroWolf
Picked up my exhaust from T1 Motorsports. Awesome customer service from beginning to end. Every email I sent received a response very quickly and they were very informative and polite. Highly recommend for high-end parts!
Sandra G
Excellent experience with T1 motorsports. They were super responsive, very flexible with their service despite the holiday season and had competitive prices with knowledgeable staff