Description
Unleash the true potential of your BMW 135i, 335i, or 335xi with the AR Design Hi-Flow 5" Catted Downpipe for the N55 engine. This cutting-edge downpipe features the only 5" heavy-metal catalyst on the market, offering unmatched performance improvements. Designed to eliminate turbo lag and provide significant power gains, this downpipe is the perfect upgrade for those looking to enhance their vehicle's responsiveness and performance.
Handcrafted with precision in the USA, the AR Design downpipe is made from premium 304 stainless steel, ensuring durability and strength under extreme temperatures. The 5" body heavy-metal catalyst provides an efficient exhaust flow while maintaining legal emissions compliance. This downpipe also includes all necessary components, such as O2 bungs and a set of bomb-proof exhaust gaskets, to ensure easy installation and optimal functionality.
With typical gains of 15+hp with tuning, this downpipe enhances turbo spool and throttle response, giving you a more engaging driving experience.
Key Features:
- Exclusive 5" Heavy Metal Catalyst – The only catted downpipe on the market with a 5" heavy metal catalyst, offering optimal exhaust flow and efficiency.
- Power Gains with Tuning – Achieve a 15+hp increase with proper tuning, boosting overall power and responsiveness.
- 100% Handcrafted in the USA – Constructed from premium 304 stainless steel for exceptional durability and performance.
- Water-Jet Cut 304 Stainless Cat-Back Flanges – CNC'd V-Band flange for a perfect fit and improved exhaust flow.
- TIG Welded, Argon Back-Purged – For clean, strong welds that can withstand high temperatures and high-performance driving.
- Exclusive Bomb-Proof Exhaust Gaskets – Included to ensure a secure and leak-free installation.
- Grade 10.9 Metric Hardware – Includes high-strength hardware (145,000 PSI tensile strength, Zinc Plated) and Nord-Lock reusable washers.
- Factory Location O2 Bungs – Ensures compatibility with the factory O2 sensor setup. Additional wideband O2 bungs are available for tuning purposes.
- Optional 2000°F Ceramic Coating – Ceramic coating offers extra protection against corrosion, backed by a 3-year warranty.
- Lifetime Warranty – Lifetime warranty against any manufacturing defects for the original owner.
Fitment:
- BMW 135i E82 (N55 engine)
- BMW 335i E90/E92/E93 (N55 engine)
- BMW 335xi E91/E92 (N55 engine)
This product is intended for off-highway use only. Installing it on a vehicle that is driven on public roads may violate U.S. and Canadian emission laws and safety standards.
Elevate your BMW N55 engine’s performance with the AR Design 5" Catted Downpipe and experience the true power of your vehicle.
