AR Design

ardesign-logo

AR design creates and sells some of the finest products available for your performance vehicle. Specializing in exhaust components mainly downpipes for the newer turbo BMW motors.

AR DESIGN BMW 135I / 335I 3″ HI-FLO CATLESS DOWNPIPES (N54)
The only TRUE 3″ catless downpipes currently on the market! 3″ tubing until cat-back flange – all systems currently on the market reduce to 2.5″ much closer to the turbocharger.

  • 100% hand crafted in the USA from premium 304 Stainless Steel – flanges and O2 bungs included!
  • Typical gains with tuning in the 30bhp range!
  • Water-jet cut 304 Stainless cat-back flanges, and CNC’d 304 Stainless V-Band flanges.
  • 100% TIG welded, argon back-purged.
  • Set of our exclusive bomb-proof exhaust gaskets included.
  • Grade 10.9 Metric Hardware (145,000PSI tensile strength, C32-C39 Rockwell, Zinc Plated), and Nord-Lock positive locking re-usable washers included.
  • Factory location O2 bungs
  • Available with a 2000°F ceramic coating. Coatings come with a 3 year warranty against corrosion and rust to original owner.
  • Lifetime warranty against any manufacturing defects given to original owner.

135_335_N54DownpipeRaceCats

AR DESIGN BMW 135I / 335I 3″ HI-FLO CATLESS DOWNPIPES WITH RESONATORS (N54)
The best TRUE 3″ catless downpipes currently on the market! 3″ tubing until cat-back flange.

  • Typical gains with tuning in the 30bhp range!
  • Built with Vibrant resonators to help reduce rasp and drone!
  • 100% hand crafted in the USA from premium 304 Stainless Steel – flanges and O2 bungs included!
  • Water-jet cut 304 Stainless cat-back flanges, and CNC’d 304 Stainless V-Band flanges.
  • 100% TIG welded, argon back-purged.
  • Set of our exclusive bombproof exhaust gaskets included.
  • Grade 10.9 Metric Hardware (145,000PSI tensile strength, C32-C39 Rockwell, Zinc Plated), and Nord-Lock positive locking re-usable washers included.
  • Factory location O2 bungs
  • Available with a 2000°F ceramic coating. Coatings come with a 3 year warranty against corrosion and rust to original owner.
  • Lifetime warranty against any manufacturing defects given to original owner.

135_335_N54DownpipeResonated

AR DESIGN BMW 135I / 335I 3″ HI-FLO DOWNPIPES W/RACE CATS (N54)
The only TRUE 3″ catted downpipes currently on the market! 3″ tubing until cat-back flange – all systems currently on the market reduce to 2.5″ much closer to the turbocharger.

  • 100% hand crafted in the USA from premium 304 Stainless Steel (cats are made from 409 Stainless) – flanges and O2 bungs included!
  • Water-jet cut 304 Stainless cat-back flanges, and CNC’d 304 Stainless V-Band flanges.
  • Magnaflow 3″ metal substrate race cats
  • 100% TIG welded, argon back-purged.
  • Set of our exclusive bomb-proof exhaust gaskets included.
  • Grade 10.9 Metric Hardware (145,000PSI tensile strength, C32-C39 Rockwell, Zinc Plated), and Nord-Lock positive locking re-usable washers included.
  • Factory location O2 bungs
  • Available with a 2000°F ceramic coating. Coatings come with a 3 year warranty against corrosion and rust to original owner.
  • Lifetime warranty against any manufacturing defects given to original owner.

135_335_N54DownpipeRaceCats_1

AR DESIGN BMW 335XI 3″ HI-FLO CATLESS DOWNPIPES (N54)
The only 3″ catless downpipes currently on the market, Tapering to 2.5″ approximately in the middle of the downpipe.

  • 100% hand crafted in the USA from premium 304 Stainless Steel – flanges and O2 bungs included!
  • Water-jet cut 304 Stainless cat-back flanges, and CNC’d 304 Stainless V-Band flanges.
  • 100% TIG welded, argon back-purged.
  • Set of our exclusive bomb-proof exhaust gaskets included.
  • Grade 10.9 Metric Hardware (145,000PSI tensile strength, C32-C39 Rockwell, Zinc Plated), and Nord-Lock positive locking re-usable washers included.
  • Factory location O2 bungs
  • Available with a 2000°F ceramic coating. Coatings come with a 3 year warranty against corrosion and rust to original owner.
  • Lifetime warranty against any manufacturing defects given to original owner.

135_335_N54Downpipe

AR DESIGN 135I / 335I / 335XI 4″ HI-FLO™ CATLESS DOWNPIPE (N55, 2011-)
The only 4″ catless downpipe currently on the market! Built with a carefully made 4″ to dual 2.5″ collector that mates to the factory style exhaust.

  • Typical gains with tuning in the 20+hp range!
  • 100% hand crafted in the USA from premium 304 Stainless Steel – flanges and O2 bungs included!
  • Water-jet cut 304 Stainless cat-back flanges, and CNC’d 304 Stainless V-Band flange.
  • 100% TIG welded, argon back-purged.
  • Set of our exclusive bomb-proof exhaust gaskets included.
  • Grade 10.9 Metric Hardware (145,000PSI tensile strength, C32-C39 Rockwell, Zinc Plated), and Nord-Lock positive locking re-usable washers included.
  • Factory location O2 bungs, with an added bung for a wideband O2 sensor!
  • Available with a 2000°F ceramic coating. Coatings come with a 3 year warranty against corrosion and rust to original owner.
  • Lifetime warranty against any manufacturing defects given to original owner.

335Xi_N54Downpipe

AR DESIGN 135I / 335I / 335XI HI-FLO™ CATTED DOWNPIPE (N55, 2011-)
The only catted downpipe with a 5″ heavy metal catalyst currently on the market! Built with a carefully made collector that mates to the factory style exhaust.

  • Typical gains with tuning in the 15+hp range!
  • 100% hand crafted in the USA from premium 304 Stainless Steel – flanges and O2 bungs included!
  • Water-jet cut 304 Stainless cat-back flanges, and CNC’d 304 Stainless V-Band flange.
  • 100% TIG welded, argon back-purged.
  • Set of our exclusive bomb-proof exhaust gaskets included.
  • Grade 10.9 Metric Hardware (145,000PSI tensile strength, C32-C39 Rockwell, Zinc Plated), and Nord-Lock positive locking re-usable washers included.
  • Factory location O2 bungs, with an added bung for a wideband O2 sensor!
  • Available with a 2000°F ceramic coating. Coatings come with a 3 year warranty against corrosion and rust to original owner.
  • Lifetime warranty against any manufacturing defects given to original owner.

335Xi_N54Downpipe_0

AR DESIGN BMW 535I / 535XI 3″ HI-FLO CATLESS DOWNPIPES
The ONLY 3″ catless downpipes currently on the market! 3″ tubing until cat-back flange.

  • 100% hand crafted in the USA from premium 304 stainless steel – flanges and O2 bungs included!
  • Water-jet cut 304 Stainless cat-back flanges, and CNC’d 304 Stainless V-Band flanges.
  • 100% TIG welded, argon back-purged.
  • Set of our exclusive bomb-proof exhaust gaskets included.
  • Grade 10.9 Metric Hardware(145,000PSI tensile strength, C32-C39 Rockwell, Zinc Plated), and Nord-Lock positive locking re-usable washers included.
  • Factory location O2 bungs
  • Available with a 2000°F ceramic coating. Coatings come with a 3 year warranty against corrosion and rust to original owner.
  • Lifetime warranty against any manufacturing defects given to original owner.

535_Downpipe

AR DESIGN BMW X5M / X6M 3″ HI-FLO CATLESS DOWNPIPES
The only TRUE 3″ catless downpipes currently on the market! 3″ tubing until cat-back flange – all systems currently on the market reduce to 2.5″ much closer to the turbocharger.

  • Typical gains with tuning in the 30bhp range!
  • 100% hand crafted in the USA from premium 304 Stainless Steel – flanges and O2 bungs included!
  • Water-jet cut 304 Stainless cat-back flanges, and CNC’d 304 Stainless V-Band flanges.
  • 100% TIG welded, argon back-purged.
  • Set of our exclusive bomb-proof exhaust gaskets included.
  • Grade 10.9 Metric Hardware (145,000PSI tensile strength, C32-C39 Rockwell, Zinc Plated), and Nord-Lock positive locking re-usable washers included.
  • Factory location O2 bungs
  • Available with a 2000°F ceramic coating. Coatings come with a 3 year warranty against corrosion and rust to original owner.
  • Lifetime warranty against any manufacturing defects given to original owner.

X5M_X6MDownpipes

AR DESIGN BMW F10 550I 3″ HI-FLO CATLESS DOWNPIPES
The only TRUE 3″ catless downpipes currently on the market! 3″ tubing until cat-back flange – all systems currently on the market reduce to 2.5″ much closer to the turbocharger.

  • Typical gains with tuning in the 30bhp range!
  • 100% hand crafted in the USA from premium 304 Stainless Steel – flanges and O2 bungs included!
  • Water-jet cut 304 Stainless cat-back flanges, and CNC’d 304 Stainless V-Band flanges.
  • 100% TIG welded, argon back-purged.
  • Set of our exclusive bomb-proof exhaust gaskets included.
  • Grade 10.9 Metric Hardware (145,000PSI tensile strength, C32-C39 Rockwell, Zinc Plated), and Nord-Lock positive locking re-usable washers included.
  • Factory location O2 bungs
  • Available with a 2000°F ceramic coating. Coatings come with a 3 year warranty against corrosion and rust to original owner.
  • Lifetime warranty against any manufacturing defects given to original owner.

550CatlessDownpipes_1

AR DESIGN BMW 550I 3″ HI-FLO DOWNPIPES W/5″ RACE CATS
The only TRUE 3″ catted downpipes currently on the market! 3″ tubing until cat-back flange – all systems currently on the market reduce to 2.5″ much closer to the turbocharger.

  • 100% hand crafted in the USA from premium 304 Stainless Steel (cats are made from 409 Stainless) – flanges and O2 bungs included!
  • Water-jet cut 304 Stainless cat-back flanges, and CNC’d 304 Stainless V-Band flanges.
  • Magnaflow 5″ bodied metal substrate race cats
  • 100% TIG welded, argon back-purged.
  • Set of our exclusive bomb-proof exhaust gaskets included.
  • Grade 10.9 Metric Hardware (145,000PSI tensile strength, C32-C39 Rockwell, Zinc Plated), and Nord-Lock positive locking re-usable washers included.
  • Factory location O2 bungs
  • Available with a 2000°F ceramic coating. Coatings come with a 3 year warranty against corrosion and rust to original owner.
  • Lifetime warranty against any manufacturing defects given to original owner.

550RaceCatDownpipes

AR DESIGN BMW 550I 3″ HI-FLO CATLESS DOWNPIPES WITH RESONATORS
The best TRUE 3″ catless downpipes currently on the market! 3″ tubing until cat-back flange.

  • Typical gains with tuning in the 30bhp range!
  • Built with Vibrant resonators to help reduce rasp and drone!
  • 100% hand crafted in the USA from premium 304 Stainless Steel – flanges and O2 bungs included!
  • Water-jet cut 304 Stainless cat-back flanges, and CNC’d 304 Stainless V-Band flanges.
  • 100% TIG welded, argon back-purged.
  • Set of our exclusive bomb-proof exhaust gaskets included.
  • Grade 10.9 Metric Hardware (145,000PSI tensile strength, C32-C39 Rockwell, Zinc Plated), and Nord-Lock positive locking re-usable washers included.
  • Factory location O2 bungs
  • Available with a 2000°F ceramic coating. Coatings come with a 3 year warranty against corrosion and rust to original owner.
  • Lifetime warranty against any manufacturing defects given to original owner

550CatlessDownpipes_0

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