Helix Racing Products Black Exhaust Wrap. Please select size from drop-down menu. Helix Fiberglass Cloth Header Wrap insulates exhaust pipes and maintains a higher temperature inside the pipes allowing all fuel to burn and create greater horsepower. Please note: to seal product from the elements and extend the life of the exhaust wrap, use Helix Very High Temp Exhaust System Paint. Step-By-Step Installation Instructions Step 1: Measure the length of exhaust tube from the exhaust port to the collector, for each bend add 8 to length. Step 2: Cut exhaust wrap. Step 3: Wrap material around tube starting at the end of the exhaust pipe and secure end of wrap with hose clamp or stainless steel cable tie. Wrap tightly with approx. 1/4-3/8 overlap. If black material gets wet dye may bleed. Racer Information: Because the carburetor is receiving additional vacuum, stepping down 1 to 2 steps in the secondary and primary jets may be necessary. Read plugs and adjust accordingly. Please Select Size From Drop Down Menu Available in 1″x25 ft., 2″x25 ft., 1″x50 ft. and 2″x50 ft.Ceramic Cloth Increase Performance by Heat Retention Made in U.S.A.