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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Racing Dynamics Catted Downpipe - BMW / M340I G20 2019 OnCatted Downpipe w HS for BMW M340I 440i XI, G series 2019 on with B58 3. 0 L I6 turbo engine. Eliminates the largest restriction in your exhaust. 4 1 2" input flange with 4" mandrel bent downpipe manufactured out of 304 stainless steel, TIG welded with brushed finish. For left hand drive models only! Features: Straight through design allows for maximum power and sound. Straight through tubing section replaces the heavy and restrictive OEM catalytic
Catted Downpipe w/HS for BMW M340I/440i XI, G series 2019 on with B58 3.0 L I6 turbo engine.Eliminates the largest restriction in your exhaust. 4 1/2" input flange with 4" mandrel bent downpipe manufactured out of 304 stainless steel, TIG welded with brushed finish. For left hand drive models only!
Features:
- Straight-through design allows for maximum power and sound.
- Straight-through tubing section replaces the heavy and restrictive OEM catalytic converters for maximum power and sound
- Includes flex joint to reduce vibration from the engine and allows alignment during installation
- Improves horsepower and torque significantly. Approximately 25 HP with a tune.
- Direct bolt-on replacement for OEM primary catalytic converters
- Includes 200 cell Euro 5 sport cat
- With heat shield to conduct the heat away from the engine and engine compartment
- Less thermal load on the turbocharger
- Reduces turbo lag
Applications:
- BMW 340i/ix B58 motor, G20 2019 on
- BMW 440i/ix B58 motor, G20 2019 on
These parts are intended for off road or track use only!
- This product is sold for off road use only. It is not legal for use on public highways. This product is not for sale or use in California. It is available to our international customers for use within legal limits in their domicile.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
Stretch out, size down but love the shorts.
Size: 8, Color: Ocean Breeze
Love these shorts. My favorites ever. I always always wear a size 8 in shorts. The 8 fit initially, but stretched out so much, I didn’t have to unbutton them to get them out. I bought 3 colors. I finally bought one in a size 6. Perfect fit, even if they do stretch a little. Returning the unworn ones, and replacing with size 6.
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Reviewed in the United States on August 30, 2025
★★★★★ 5
Love these shorts.
Size: 4, Color: Jet Black
Five inch for a great mom fit. Cute button closures for the pockets on the back, nice deep pockets. It’s hard to see in the video because they are black but they are the comfiest shorts. True to size. I’m a size 3-4 and the 4 fits perfect…. Even after washing and drying.
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Reviewed in the United States on June 13, 2025
★★★★★ 5
Excellent quality!!!
Size: 10, Color: Ocean Breeze
Wow great quality!!! You get what you pay for that’s for sure!! The fabric is heavy-ish-indicative of quality fabric. Fit is spot on. I’m a barely size 10 (5’6” 160 lbs) and these shorts deliver!! The stretch is just perfect enough for comfort. Excited to wear these next summer!! Will watch for more sales so I can grab a couple more pairs. If you’re on the fence, get them!!
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Reviewed in the United States on December 4, 2025
★★★★★ 5
Good Quality
Size: 8, Color: Nautical Navy
These are really nice shorts. The fabric is nice quality. They do run a little large.
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Reviewed in the United States on August 27, 2025
★★★★★ 5
Love!
Size: 10, Color: Sailors Red
The quality is excellent. They are more of a faded red. I ordered a 10 worried they might be snug but that was a mistake. I should have stuck with my normal size 8. (I purchased an Amazon brand of this style that runs small and the size 10 feels more like an 8.) I love the length-not too short and not too long. They are sturdy cotton. There is not any stretch to the fabric. I’m giving them to a friend. I actually tried to shrink them by washing them in hot water and hot dryer but it didn’t make them fit me any better. Since they were already too big, I can’t really say if they shrunk by doing this. They weren’t huge on me before washing and seemed to fit the same way after. I tried wearing them all day and they seemed to loosen up even further. I was continuously pulling them up. I really feel like the sizing is accurate and you can be pretty confident of ordering your regular size. I’ve already reordered the size 8. I’ll update my review if there any issues with that size.
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Reviewed in the United States on July 19, 2025