aFe Power Twisted Steel Downpipe
Street Series version for added performance and a more aggressive sound
Utilizes a 400 CPSI (cell per square inch) catalytic converter for maximum flow
A unique 3-1/2" to 3" stepped design is used to increase exhaust velocity
Constructed of mandrel bent, brushed finish 304 stainless steel tubing
Factory style V-band flanges are used for a secure leak-free seal
100% hand TIG-Welded by certified craftsmen for race proven strength and durability
In testing, this down-pipe produced a max gain of +26 horsepower and +21 ft. lbs. of torque verified by our in house dyno Potential for up to +20 horsepower and +41 lbs. x ft. of torque when combined with aFe's Twisted Steel street down-pipe back (P/N: 49-36330)
High Flow Catalytic Converter:
This down-pipe utilizes a 400 CPSI (cell per square inch) catalytic converter for maximum flow.
3-1/2" to 3" Stepped Design:
A unique 3-1/2" to 3" stepped design, is used to increase exhaust velocity and increase usable torque. This means more aggressive throttle response and increased passing power.
Factory Mounting Locations:
This down-pipe mounts directly to factory mounting locations and includes hardware for a hassle-free installation.
Machined, factory style V-band flanges are used for a secure leak-free seal.
100% TIG-Welded by certified craftsmen for race proven strength and durability. TIG-Welding provides the strongest welds reducing stress cracks.
Brushed 304 SS Construction:
This down-pipe is constructed of mandrel-bent, brushed 304 stainless steel tubing for maximum performance, corrosion resistance and strength eliminating cracking.
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2014-2016 BMW M235iX (F23) N55 Convertible
2013-2015 BMW 335i (F30) N55 Sedan
2013–2015 BMW 335iX (F30) N55 Sedan
2012-2016 BMW 335iX (F34 GT) N55 Gran Turismo
2012-2016 BMW 435i (F32) N55 Coupe
2012-2016 BMW 435iX (F32) N55 Coupe
2013-2016 BMW 435i (F33) N55 Convertible
2013-2016 BMW 435iX (F33) N55 Convertible
2013-2016 BMW 435i (F36) N55 Gran Coupé
2013-2016 BMW 435iX (F36) N55 Gran Coupé
aFe down-pipes are engineered and manufactured in their Corona, California manufacturing facility.
Note: This is a "Race Only" product used solely for competition. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use including recreational off-road use could be in violation of local, state and federal laws. This system is not currently CARB exempt and is not available for sale in California or for use on any vehicle registered with the California Department of Motor Vehicle.
For CA Proposition 65 Warning: Click Here
|Part Number||48-36315-HC, 48-36315-HN|
|Type of Part||Downpipes|