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Description
4" Single Turbo Catless Downpipe Exhaust For 2012-2021 BMW F-Chassis M135i M2 M235i 335i 435i X Drive F32 F33 F36 F22 F23 N55Experience the perfect blend of quality engineering and exceptional value with these high performance Downpipe. Manufactured from durable T 304 stainless steel with precision CNC machined flanges and TIG MIG welded construction, they deliver superior durability and flow characteristics. Computerized mandrel bending technology ensures smooth exhaust airflow for improved scavenging and reduced back pressure. Features: Piping Diameter: 4" Package
Experience the perfect blend of quality engineering and exceptional value with these high-performance Downpipe. Manufactured from durable T-304 stainless steel with precision CNC-machined flanges and TIG/MIG welded construction, they deliver superior durability and flow characteristics. Computerized mandrel bending technology ensures smooth exhaust airflow for improved scavenging and reduced back pressure.
Features:
- Piping Diameter: 4"
- Package Included: 1x Downpipe
- Precision CNC machined turbocharger V-Band flange
- TIG weld for strength and durability
- Straight-through design allows more air through to improve horsepower and overall performance
- Mandrel Bent 4" piping With Smooth transition to the exhaust system
- Higher Max Horsepower Power Curve
- Higher Initial Torque Curve - The torque curve hits faster and higher and longer
- Better throttle response and faster turbo spool-up times
- Expected gains of 20whp and 30wtq when used with a Stage 2 Tune
- Professional Installation is Highly Recommended (No Instruction Included)
- For 2013-2015 BMW F20 F21 M135i
- For 2014-2016 BMW F22 F23 M235i
- For 2016-Present BMW F87 M2
- For 2014-2016 F32 F33 435i/435i xDrive N55 Engine Models
- All N55 single turbo motors from 2013+
| VEHICLE NAME | YEAR | ENGINE |
|---|---|---|
| BMW 435i | 2014~2016 | 3.0L |
| BMW 435i xDrive | 2014~2016 | 3.0L |
| BMW M135i | 2013~2015 | 3.0L |
| BMW M2 | 2016~2021|2023~2024 | 3.0L |
| BMW M235i | 2014~2016 | 3.0L |
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 13 reviews
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Product Reviews
★★★★★ 3
Not as good as the oem accessories
Color: Saros 10r-20/Qrevo Curvx Accessories, Color: Saros 10r-20/Qrevo Curvx Accessories
I have a roborock saros 10r and all of these accessories seem to be compatible and work with my robovac however the quality of them isn’t nearly the same level. The mop pads material are much coarser and less fine than the original. The side brushed bristles weren’t nearly as tightly bound together. The roller brush isn’t as well made. The cleaning performance I think is similar but i suspect they will not last as long as the oem accessories which are just much better made. Over it’s a mix on value.
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Reviewed in the United States on May 30, 2026
★★★★★ 5
All the parts needed to maintain your Roborock robot, with a great fit and finish.
Color: Saros 10r-20/Qrevo Curvx Accessories, Color: Saros 10r-20/Qrevo Curvx Accessories
This is a great consumable parts replacement package for many Roborock robots. I utilized it for my Saros 10R. The parts all fit great and honestly look and feel just like the OEM parts that came with the robot. Over time, I have purchased new consumable parts for my Saros 10R from various sources, but I think that I will be using this kit in the future.
The kit comes with everything one needs to maintain Roborock robots, as outlined in its description. The main brushes are of good quality and fit well. I have found that the main brushes and the filter fit are the hardest things for third-party vendors to duplicate, and these do that well. What I like most is the mop heads. They are of very good quality and may be better than the OEM mop heads.
Everything in this kit fits well and mimics the manufacturer's parts closely in both quality and fit. Compared to the cost of Roborock OEM parts, this is a home run.
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Reviewed in the United States on May 26, 2026
★★★★★ 4
Nice Value Replacement Kit for the Qrevo CurvX, Brushes Slightly Less Dense Than OEM
Color: Saros 10r-20/Qrevo Curvx Accessories, Color: Saros 10r-20/Qrevo Curvx Accessories
All of the included items fit my Roborock Qrevo CurvX nicely, and the material quality is fairly close to the OEM parts. I also liked the quantity of each item included, since it should be quite a while before I need to buy another replacement kit.
The only downside I noticed was that the main roller brushes have about 1/4 fewer bristles than the OEM versions, so they don't seem quite as dense. Other than that, everything fits as expected and the kit seems like a solid value for maintaining the CurvX.
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Reviewed in the United States on May 19, 2026
★★★★★ 5
Reliable Replacement Parts That Work Well
Color: Saros 10r-20/Qrevo Curvx Accessories
These replacement parts have worked very well with our machine so far. The fit was accurate, installation was straightforward, and everything lined up the way it should without needing any adjustments.
Performance has been just as good as the original parts we were replacing. Once installed, the machine operated normally, and I haven’t noticed any issues with function or compatibility during regular use.
Overall, this is a dependable set of replacement parts to keep on hand for routine maintenance or unexpected breakdowns. Having extras available makes repairs a lot easier when something eventually wears out or needs to be swapped.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Solid replacement kit for the Roborock Saros - everything you need in one pack
Color: Saros 10r-20/Qrevo Curvx Accessories, Color: Saros 10r-20/Qrevo Curvx Accessories
Everything in this kit fits my Roborock Saros without any issues. The main brushes, side brushes, mop pads, filters, and dust bags all installed the same way as the originals, and nothing felt loose or off. The kit comes with a lot of parts too, so I have plenty of spares to work through before needing to reorder anything.
The quality on the individual pieces looks good. The main brushes feel solid and the rubber fins on them look well formed. The mop pads have a dense microfiber texture on one side and a rougher scrubbing surface on the other, and they feel comparable to the OEM pads. The dust bags are the sealed filter bag style with the gray plastic collar, same as the stock ones, and the filters look like they have the same fine media as the originals. Overall this is a good replacement kit if you have one of the compatible Saros models and want to stock up on all your consumables at once.
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Reviewed in the United States on May 1, 2026