Description
xWe made the S55 sound epic with the valves closed, and with them open… again! All while remaining emissions compliant Presenting the second generation of SwitchPath™ Exhaust for the BMW F8X M3 and M4.
Minimal bends, maximum flow, and push-button attitude The SwitchPath™ Exhaust is a true Cat Back configuration comprised of 3-inch and 2.5-inch U.S.-sourced T304L stainless steel, a precision x-pipe, and a valved SwitchPath™ muffler tuned specifically for the S55.
Beginning after the secondary catalysts, the precision X-pipe immediately helps smooth the S55 of its infamous rasp, allowing the tone to be further refined by the bespoke muffler in the rear When the valves are closed, the SwitchPath™ Exhaust produces a refined, aggressive howl while remaining full-bodied and powerful – no congested, metallic sounds here when on the throttle.
At cruising speeds, interior acoustics are close to stock AWE SwitchPath™ tech also responds perfectly to the many transmission settings and shift points in DCT vehicles.
Drop the hammer with the valves closed and SwitchPath™ sings a proper M anthem If you were to leave the valves closed at all times after equipping SwitchPath™, we wouldn’t blame you — it’s that good… all the time.
Open the valves and the S55’s roar is uncorked Sport and Sport+ modes achieve the ultimate contrast in behavior when compared to comfort driving modes (valves closed).
In Sport mode, the exhaust note is powerful, clean, and aggressive In Sport+ mode, the same aggression applies… but with grin-provoking burbles…a lot of grin-provoking burbles.
Thanks to the precision X-pipe, the rasp is still kept in check while allowing the exhaust note to reach full aggression If you’re looking for the best of both worlds and want to retain your factory valve behavior all while gaining peace of mind (i.e. emissions compliance), look no further than SwitchPath™.
Comes complete with quad diamond black tips, and AWE's No CEL Guarantee, Perfect Fitment Guarantee, and Lifetime Warranty..
Features & Benefits
- SwitchPath™ utilizes factory valving and retains M-Sport button functionality
- Proudly engineered, designed, and manufactured in-house at AWE
- 3” CNC mandrel-bent Cat Back configuration
- Unified design for OPF euro and non-euro spec cars
- Max gains of 12 hp and 16 lb-ft of torque at the wheels
- No Check Engine Light Guarantee
- 50-state legal Cat Back design: sick sound with all catalysts intact
- Perfect Fitment Guarantee
- Tip options include 102mm double-walled, slash-cut tips in Diamond Black
- Precision-engineered X-pipe to unlock a clean S55 tone
- Handcrafted from U.S.-sourced .065" wall T304L stainless steel
- Featuring the AWE Lifetime Exhaust Warranty
Fitment Information
BMW M3
- Year(s): 2015-2018
- Sub Model(s): Base
- Engine(s): 3.0
BMW M4
- Year(s): 2018-2020, 2015-2020
- Sub Model(s): Base, CS
- Engine(s): 3.0
Specifications
- Material: T304L Stainless Steel
- System Type: Cat Back
- Tip Color: Diamond Black
- Number of Tips: 4
- Hardware Included: Yes
Dimensions
- Length: 134.6 cm
- Width: 61.0 cm
- Height: 35.6 cm
- Weight: 37.6 kg
De-cats and sports cats are intended for off-road or motorsport use only and may prevent your vehicle from passing an MOT.
Only EC type-approved components are legal for road use.
Shipping & Returns
xReturns Policy
We want you to be completely satisfied with your purchase. If you need to return an item, you may do so within 30 days of delivery, provided the item is unused, in its original packaging, and in a resellable condition.
If the return is due to an error on our part (e.g. incorrect item received or a defect), we will cover the return shipping costs. Please contact us before returning any item so we can authorise the return and provide further instructions.
Made to Order and Custom Items
Please note that Made to Order or customised items (including most AWE Tuning products built in the USA) are non-refundable once production has started, except in cases of manufacturing defect or fulfilment error.
Refunds
Once we’ve received and inspected your return, we’ll issue a refund back to your original payment method. Most refunds are processed within 5 working days, though it may take a few more days for your bank to complete the transaction.
To begin a return, please email us at contact@awe-tuning.co.uk with your order number and reason for return.
Shipping Information
We offer shipping across the UK and Europe, with rates calculated at checkout based on the destination and the weight of your order.
UK Shipping
Shipping starts from £4.99. Orders in stock are usually dispatched within 1–2 business days.
EU Shipping
Shipping starts from £18.00. Delivery times vary depending on the destination and whether the item is in stock or made to order.
Made to Order Items
Many AWE Tuning products are built in the USA to order. These typically take 10–15 working days to manufacture and ship, though this may vary during peak times. We’ll keep you updated throughout.
Tracking & Delivery
All orders include tracking and insurance. You'll receive a confirmation email with tracking details once your item has shipped.
Customs & Duties (EU Orders)
International orders may be subject to VAT, import duties, or other charges upon arrival. These are the responsibility of the buyer.
If you have any questions about shipping or returns, please get in touch.
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