What Are Y Pipes?


Also called Y collectors, factory exhaust Y pipes are often among the first things that car enthusiasts replace when trying to gain power or gas mileage. Factory Y pipes are often restrictive and provide adequate but not exceptional exhaust flow.


  • A Y pipe is a joint where exhaust gases converge to exit the vehicle. Aftermarket piping provides a smooth, less-resistant path for these gases to leave the vehicle.


  • Most Y pipes will be available in stainless steel, aluminumized steel or steel. All serve the same basic purpose of allowing exhaust gases to flow freely.


  • A good Y pipe can increase exhaust flow, which will increase horsepower, provide better fuel mileage and lower exhaust gas temperatures.


  • An alternative to a Y pipe is an X pipe for those who wish to run a true duel exhaust. Duel exhaust can still be used with a Y pipe as long as the muffler has two outlets.

Expert Insight

  • A good choice for any undercarriage component, stainless steel does not rust and will ensure that the Y pipe lasts a lifetime.

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