Grand Rock - 4" or 5" Resonators Grand Rock - 4" or 5" Resonators Available Sizes: 4 inches In/Out by 16.5 inches long 9 inch body diameter Sold Individually Made in America Grand Rock® Company is a major manufacturer and warehouse of superior exhaust systems for the aftermarket. Since 1970 Grand Rock has had its sights set on providing the customer with only the best parts and material in the industry. Through excellent customer service, rapid delivery, damage free packing and competitive pricing Grand Rock has grown to become the best in the industry. M-144, M-145 Still looking for the perfect part? Having trouble finding it? Call our product experts at 603-224-7370 and let us lend a hand. EXTRAS Extras The following products are meant to be used or paired with the product above.Extras may also provide alternatives to the product you are seeking. DynaFlex 5" Resonator DynaFlex Mounting Bracket Clamp "1986 Diamond Plate" T-Shirt Still looking for the perfect part? Having trouble finding it? Call our product experts at 603-224-7370 and let us lend a hand.
