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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
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Description
Racing Dynamics Catted Downpipe with Heat Shield - BMW B58 2016+ / M240i / 340i / 440i / 540iEliminates 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
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.
- Catted downpipe has heat shield over its outer surface to better direct the exhaust heat out the exhaust. Heat shield is used to protect surrounding parts, wires, and hoses against radiant heat from the downpipes. Integrated thermal insulation reduces surface temperature up to 70%
- Direct bolt-on replacement for OEM primary catalytic converters
- Less thermal load on the turbocharger
- Reduces turbo lag
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 5 reviews
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Product Reviews
★★★★★ 5
Amazing!!!
Color: Turn Around, Size: Level 2
This is an amazing mental stimulation toy for my dog! And it’s a perfect one for dogs who are learning. He picked it up right away and loves it! I can’t wait to get the other ones they have. Seriously so amazing. My very active Aussie can spend 30 minutes doing this and not get bored.
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Reviewed in the United States on April 5, 2026
★★★★★ 5
Great for bored dogs
Color: Flip Board, Size: Level 2
Great dog puzzle! My pup loves this, he did chew the peg portion once he got them out so they can be put back in. They are tough for small dogs to get out so I think he plotted it out.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Mental stimulation for dogs and fun to watch!
Color: Turn Around, Size: Level 2, Color: Turn Around, Size: Level 2
Perfect mental stimulation for dogs like that like a challenge! My very smart dog figured it out in a few seconds so I use treats that are only a little smaller than the holes to make it more challenging. She doesn’t play with toys like my other dogs so I do make an effort to offer her other outlets to get energy out. I have another dog that finds it challenging, but enjoys it, so I use smaller treats for her to make it easier. I have another dog that has a low tolerance for challenges and walks away from it or tries to chew through it- so I think the level 2 rating is fair as every dog is different! My dogs are 12 lb for reference.
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Great tool!
Color: Flip Board, Size: Level 2
Love this interactive toy! I purchased this for our 4 month old husky, looking for something to keep her entertained, and I was not let down! In the beginning, it took her a few good minutes to figure it out, and about a week later, she gets it done in about 2 minutes. If you've never had a husky, let me tell you, these dogs are very inquisitive! But due to her being involved with this, our older pit is now getting in on the fun! This is huge because our pit isn't amused by much! Overall, it's durable enough to withstand puppy chewing, and being carried around. It's also super easy to wipe clean as it's some sort of durable, perhaps reinforced layers of plastic. Even though the puppy figured it out, it still seems to excite her, and considering it keeps both dogs entertained and active mentally, I would absolutely recommend this to any dog owner!
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Reviewed in the United States on October 17, 2025
★★★★★ 4
Trixie Flip Board Dog Enrichment Toy – Great Starter Puzzle, Best for Beginner Dogs
Color: Flip Board, Size: Level 2
I’ve been using this with a high-energy, working-breed dog, and it’s a solid beginner-level enrichment toy—especially for dogs new to puzzle feeders.
What works well:
• The design is simple and intuitive. My dog learned the flipping lids and sliding compartments quickly without frustration.
• It’s great for short mental stimulation sessions or slowing down treat time.
• The non-slip base helps keep it in place on hard floors.
Things to consider:
• This is a Level 1 puzzle, so once your dog understands it, they can solve it quickly.
• The compartments are on the smaller side, so it works better with small treats than full meals.
• Best used with supervision if your dog tends to paw or chew at toys.
Best use case:
Ideal for puppies, beginner dogs, or as part of a rotation of enrichment toys. More advanced dogs will likely need something more challenging to stay engaged.
Bottom line:
A well-designed starter puzzle that’s easy for dogs to learn and use. Not the most challenging option long-term, but a good addition to an enrichment routine.
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Reviewed in the United States on March 31, 2026