Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Active Autowerke Catted Downpipes - BMW F90 / M5 / M8 / X5M / X6M (11-063)Active Autowerke presents catted downpipes designed specifically for BMW F90 M5, M8, X5M, and X6M models equipped with the S63TU engine. These downpipes address the restrictive nature of the factory components to enhance exhaust flow and performance. Manufactured in house from 304 stainless steel with TIG welds for durability and precise fitment. Features a factory matched 3. 5" V band inlet with a tapered, mandrel bent body. Includes the lower
Active Autowerke presents catted downpipes designed specifically for BMW F90 M5, M8, X5M, and X6M models equipped with the S63TU engine. These downpipes address the restrictive nature of the factory components to enhance exhaust flow and performance.
- Manufactured in-house from 304 stainless steel with TIG welds for durability and precise fitment.
- Features a factory-matched 3.5" V-band inlet with a tapered, mandrel-bent body.
- Includes the lower section commonly referenced as the mid-pipe, streamlining the exhaust pathway.
- Equipped with a pair of 4.5" high-flow GESI catalytic converters that maintain emissions compliance without triggering a check engine light.
- Allows use of the OEM O2 sensor heat shield to preserve a stock engine bay appearance.
- GESI UHO converters are made from full 304 stainless steel and are EPA registered for 49 states (not CARB compliant).
These downpipes reduce back-pressure and radiant heat compared to the stock units, contributing to improved turbo spool and overall engine responsiveness within the designed performance parameters. Note that these catalytic converters are not legal for use in California due to state regulations.
Specifications:
- Part Type: Downpipes
- Fitment Spec: Vehicle Specific (BMW F90 M5, M8, X5M, X6M)
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
4.1 ★★★★★
Based on 2200 reviews
Sort
Product Reviews
★★★★★ 5
Very efficient!
Model: NewSLS50_52
Amazing the difference it makes on dumping the noise. Very easy to install. Pell and stick literally! Great!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 23, 2025
★★★★★ 5
This will work but prep is key!
I have an older RV that the gelcoat has dulled and is oxidized, but otherwise in good shape. I have buffed and polished in the past only for it to last a short time. I was looking up different products to try and this one has such good reviews, I thought I would give it a try. I bought the kit with the Poliglow and the Poliprep, with the scrubber and the microfiber glove. I started with the poliprep and it did a great job of gettting the streaks and black marks off. You spend a lot of time scrubbing to your likeness because anything that is still on the gelcoat when you apply the poliglow, it will be locked in there. The Poliglow is like a clearcoat that goes over the gelcoat. You have to build up layers and here are some of the tips and tricks I figured out that really helped my finished RV look great. First, make sure the applicator stays damp, this keeps the poliglow more uniform across the glove. Also, stick it in a zip lock bag when not using, you do not want it to dry out while you are using it. I found out that applying this in direct sunlight in warm temps, is the best method. This allows the poliglow to dry really fast. The first 3 or 4 layers will look streaky and dull but this is ok and as you build up the layers, the shine will come back. I found if you do this when its cooler, the layers do not dry as quick and you will get some permanent streaking or running. I had to remove a section I did in the evening because I noticed this. When in direct sunlight, this gave me the best results with no streaking or running. It dries fast and you can keep working. Like it says, do not do big sections at a time, keep it to small what you can reach sections and build those up and move on. As far as how much to buy? I have a 40 ft toy hauler and I got to kits and I had just enough to finish the whole thing minus the nose cap. I have Durabak on the nose cap, so I dont need to worry about that. I ended up buying one more bottle of the poliglow to have for my maintenance coats. Overall, I am pleased with how my 10 year old RV looks and other than some of the decals show age, it looks new again. If I were to buy a new RV, I would put this on right away and preserve the whole RV including the decals. Its not too expensive and its a lot of work, especially the prep, but it does end up with great results.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 21, 2023
★★★★★ 5
Excellent shine
Excellent line of products. Looking at the picture, you can see what the camper looked like before the Poli Glow. To the left of the window is the after Poli Glow.
It takes some elbow grease (follow instructions well) but well worth it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
★★★★★ 5
Camping enthusiast approved
One bottle covered my 20ft camping trailer 4 coats and with a little remaining for future touch ups. It definitely increases the gloss. I'm glad I didn't waste my time with wax. This is like an easy wipe on clear coat. I will report back in the future for longevity.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
★★★★★ 4
buy more than you think your going to need to get a great shine and look!!
great product and leaves a great shine. The Poli Glow doesn't go as far as the video states and it depends on condition of RV, boat...This is a great product but takes more to get a great shine!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026