Looking for aftermarket parts to modify or upgrade your 1999 Audi A6 Quattro with nitrous systems? At Tunersports.com we carry a huge selection of the top name brand performance nitrous system parts and accessories for your A6 Quattro.
Whether you have a 1999 Audi A6 Quattro in Avant to Base trim we have you covered. We have 9 nitrous systems available to mod your A6 Quattro. All parts have free shipping to the Continental US 48 States.
 SHIPS FROM MANUFACTURER 20923-00NX single nozzle systems are the most versatile EFI power boosters on the market. These systems include an NX nitrous nozzle which mounts in the air inlet before your throttle body. These systems include billet aluminum and carbon fiber Lightning series solenoids, stainless braided nozzle lines, 15 ... Nitrous Express All Sport Compact EFI Single Nozzle Nitrous Kit (35-50-75HP) w/o Bottle 1995-2001 Audi A6 Quattro Avant 1995-2005 Audi A6 Quattro Base $781.77 |
 SHIPS FROM MANUFACTURER 20923-05NX single nozzle systems are the most versatile EFI power boosters on the market. These systems include an NX nitrous nozzle which mounts in the air inlet before your throttle body. These systems include billet aluminum and carbon fiber Lightning series solenoids, stainless braided nozzle lines, 15 ... Nitrous Express All Sport Compact EFI Single Nozzle Nitrous Kit (35-50-75HP) w/5lb Bottle 1995-2001 Audi A6 Quattro Avant 1995-2005 Audi A6 Quattro Base $905.00 |
 IN STOCK 20923-10NX single nozzle systems are the most versatile EFI power boosters on the market. These systems include an NX nitrous nozzle which mounts in the air inlet before your throttle body. These systems include billet aluminum and carbon fiber Lightning series solenoids, stainless braided nozzle lines, 15 ... Nitrous Express All Sport Compact EFI Single Nozzle Nitrous Kit (35-50-75HP) w/10lb Bottle 1995-2001 Audi A6 Quattro Avant 1995-2005 Audi A6 Quattro Base $918.25 |
 SHIPS FROM MANUFACTURER 20923-12NX single nozzle systems are the most versatile EFI power boosters on the market. These systems include an NX nitrous nozzle which mounts in the air inlet before your throttle body. These systems include billet aluminum and carbon fiber Lightning series solenoids, stainless braided nozzle lines, 15 ... Nitrous Express All Sport Compact EFI Single Nozzle Nitrous Kit w/Composite Bottle 1995-2001 Audi A6 Quattro Avant 1995-2005 Audi A6 Quattro Base $1,709.31 |
 SHIPS FROM MANUFACTURER 20923-15NX single nozzle systems are the most versatile EFI power boosters on the market. These systems include an NX nitrous nozzle which mounts in the air inlet before your throttle body. These systems include billet aluminum and carbon fiber Lightning series solenoids, stainless braided nozzle lines, 15 ... Nitrous Express All Sport Compact EFI Single Nozzle Nitrous Kit (35-50-75 HP) w/15lb Bottle 1995-2001 Audi A6 Quattro Avant 1995-2005 Audi A6 Quattro Base $1,017.64 |
 SHIPS FROM MANUFACTURER 20927-00Want more horsepower without the hassle and expense of going direct port? Then the NX dual stage nitrous systems are the way to go. Having two stages means you double your power options at the click of a switch. The dual ?Shark? nozzles give adjustability from 50 to 300 wheel horsepower in 25hp incr... Nitrous Express Sport Compact EFI Dual Stage Nitrous Kit (35-75 x 2) w/o Bottle 1995-2001 Audi A6 Quattro Avant 1995-2005 Audi A6 Quattro Base $1,249.51 |
 SHIPS FROM MANUFACTURER 20927-10Want more horsepower without the hassle and expense of going direct port? Then the NX dual stage nitrous systems are the way to go. Having two stages means you double your power options at the click of a switch. The dual ?Shark? nozzles give adjustability from 50 to 300 wheel horsepower in 25hp incr... Nitrous Express Sport Compact EFI Dual Stage Nitrous Kit (35-75 x 2) x 2 w/10lb Bottle 1995-2001 Audi A6 Quattro Avant 1995-2005 Audi A6 Quattro Base $1,385.99 |
 SHIPS FROM MANUFACTURER 20927-12Want more horsepower without the hassle and expense of going direct port? Then the NX dual stage nitrous systems are the way to go. Having two stages means you double your power options at the click of a switch. The dual ?Shark? nozzles give adjustability from 50 to 300 wheel horsepower in 25hp incr... Nitrous Express Sport Compact EFI Dual Stage Nitrous Kit (35-75HP x 2) w/Composite Bottle 1995-2001 Audi A6 Quattro Avant 1995-2005 Audi A6 Quattro Base $2,177.05 |
 SHIPS FROM MANUFACTURER 20927-15Want more horsepower without the hassle and expense of going direct port? Then the NX dual stage nitrous systems are the way to go. Having two stages means you double your power options at the click of a switch. The dual ?Shark? nozzles give adjustability from 50 to 300 wheel horsepower in 25hp incr... Nitrous Express Sport Compact EFI Dual Stage Nitrous Kit (35-75 x 2) w/15lb Bottle 1995-2001 Audi A6 Quattro Avant 1995-2005 Audi A6 Quattro Base $1,605.95 |