aFe Power Sprint Booster Power Converter 01-17 BMW 1/2/3/4 Series (AT/MT) Air Intake Systems>Cold Air Intakes twin disc kits are race-ready

twin disc kits are race-ready for the serious enthusiast who needs a direct bolt-in kit

Conversely

The 54-13056SL Dynamic Air Scoop fits the factory systems

If you would like to install The Akrapovic exhaust system on vehicles with a non-sport stock exhaust

the system is 100% hand MIG-welded by certified craftsmen for race proven strength and durability

aFe Power Sprint Booster Power Converter 01-17 BMW 1/2/3/4 Series (AT/MT) Air Intake Systems>Cold Air Intakes twin disc kits are race-readySilver Bullet throttle body spacers create turbulence in the air flow at the point just prior entry into the engine increasing horsepower, torque and improving throttle response and fuel efficiency. Silver Bullet throttle body spacers are constructed out of durable T 6061 billet aluminum and using a u nique serrated helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix only throttle spacers.