This is the Novarossi 9853 polished racing pipe (no manifold). This is the one piece variety and requires an off-road manifold, which attaches to the tuned pipe using three small springs (not included). This pipe is designed for excellent bottom end/mid range performance and is a great pipe to bring the bottom end to life on Novarossi 421B engines. This pipe is an excellent choice for any engine that works well with a 053 pipe. The 41005 header is an excellent choice for this pipe for strong bottom end power delivery, while the 41001 header is recommended for better mid-range/top end performance.
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.