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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
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Description
BMW 135i, 335i N54 Catless Downpipe - ARM MotorsportsTake your N54 powered BMW 135i & 335i to the next level with ARM Motorsports' 3" catless downpipes. The ARM N54 catless downpipes eliminate the restrictive oem converters on the stock downpipes allowing the exhaust to flow more freely, increasing power and torque. Because higher boost levels generate more heat, the ARM catless downpipes allows your 135i to run boost settings of Stage 2 tunes and beyond. HIGHLIGHTS Gain up to +25whp 37wtq Improved
Take your N54-powered BMW 135i & 335i to the next level with ARM Motorsports' 3" catless downpipes.
The ARM N54 catless downpipes eliminate the restrictive oem converters on the stock downpipes allowing the exhaust to flow more freely, increasing power and torque. Because higher boost levels generate more heat, the ARM catless downpipes allows your 135i to run boost settings of Stage 2 tunes and beyond.
HIGHLIGHTS
• Gain up to +25whp / 37wtq
• Improved Exhaust Sound
• 304 Stainless Steel
• Perfect Fitment
• Improved Exhaust Sound
• 304 Stainless Steel
• Perfect Fitment
CONSTRUCTION
The ARM 135i catless downpipes are designed with a 3" stainless steel construction to optimize exhaust flow and obtain optimal back-pressure. Each downpipe has 2x O2 sensor bungs so the factory BMW O2 sensors can be remounted, allowing the ECU to continue to monitor the exhaust gases. Because these downpipes are a catless design, an ECU tune or CEL fix will be needed to avoid a CEL from displaying on instrument panel.IN THE BOX
• ARM 3" Catless Downpipe Set
• Hardware Kit
• Hardware Kit
• New Gaskets
FITMENT GUIDE
| Make | Chassis | Model | Engine |
| BMW | E82 | 1 M Coupe | N54 3.0L |
| BMW | E82 | 135i | N54 3.0L |
| BMW | E88 | 135i | N54 3.0L |
| BMW | E90 | 335i | N54 3.0L |
| BMW | E92 | 335i | N54 3.0L |
| BMW | E92 | 335is | N54 3.0L |
| BMW | E93 | 335i | N54 3.0L |
| BMW | E93 | 335is | N54 3.0L |
If you have 335i AWD model please purchase this
ARM MOTORSPORTS LIFETIME WARRANTY
Every ARM Motorsports product is backed by a lifetime warranty which is automatically issued at the time of purchase. Your warranty protects you against any defects in craftsmanship or fitment. The warranty entitles you to a replacement unit.
This product is for Off-Road Use Only. Items sold for off-road use only are illegal to use on public roads in most states and provinces. This product is intended for racing vehicles which may never be used on a public road.
This product is for Off-Road Use Only. Items sold for off-road use only are illegal to use on public roads in most states and provinces. This product is intended for racing vehicles which may never be used on a public road.
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
4.9 ★★★★★
Based on 1527 reviews
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Product Reviews
★★★★★ 5
Lovely pillow …
Size: 14 Inch by 14 Inch
This pillow has the perfect softness for easing into your couch or chair. This pillow is so soft and comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
★★★★★ 5
Great product !
Size: 11 Inch by 11 Inch
Accurate dimensions and fit inside the pillow case perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
★★★★★ 4
Revised review
Size: 20 Inch by 26 Inch
I have ordered many of these pillows and loved them! Nice and squishy but didn’t flatten like down pillows. I needed a bunch for Airbnb but they are very pricey. Was reading the reviews and several said that the pillows had changed. I thought, how much could they have changed? So I went ahead with purchase. I felt like I may as well have gone to Walmart and bought a cheap foam pillow.
Update: finally tried the pillow myself. Although there is a definite difference, it is very soft and fluffy. Changed my rating from 2 to 4 stars.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 15, 2025
★★★★★ 5
Great insert.
Size: 15 Inch by 15 Inch
Great pillow insert.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
★★★★★ 5
Throw pillow
Size: 16 Inch by 16 Inch
The 16” pillow fit perfectly in a 14” case. Filled every corner completely. Would buy it again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
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