In an off road racing environment, many drivers prefer to use the Novarossi EFRA 9901 tuned pipe due to its impressive mileage and the power it produces. Novarossi offers a “Super Strong” EFRA 9901 tuned pipe, which has been built with thicker material to take the abuse of serious off road racing.
A positive side effect of the “Super Strong” pipe, is that it resonates at a different frequency, which makes this pipe quieter than the previous Novarossi 9901.
NOTE: This is only the tuned pipe, and does not include a manifold, manifold gaskets or retaining springs which must be purchased separately. This pipe is made available as a separate item so you can choose either the long or short manifold, depending on whether you want better top or bottom end performance.