Tubing sizes 35mm - 38mm - 48mm, material steel. Techline Blacksatin ceramic coating as standard.

4-2-1 race exhaust manifold. Good midrange and top end power rd capacity CIH engines. Tubing diameters (mm): 41.5->50.8->63.5

4-2-1 race exhaust manifold. Good midrange and top end power production. Suitable for high tuned and/or increased capacity CIH engines. Tubing diameters (mm): 44.5->50.8->63.5

4-2-1 race exhaust manifold. Good midrange and top end power production. Suitable for very high tuned and high capacity CIH engines. Tubing diameters (mm): 44.5->57->63.5