y two stroke dirt bike exhaust pipe diameter is large in size

Asked by Apr 20, 2012 at 02:26 PM

Question type: General

2 Answers

35

its called an expantion chamber, i builds presser as you gain rpm and any unused fuel and compression gets fed back in the motor.

12,755

This is for "Tuning" the exhaust system to the engine. This helps evacuate the exhaust system faster to allow for next exhaust stroke.

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