HKS SUPER TURBO MUFFLER MAT GR SUPRA DB42 URBAN MATTE EDITIONHKS SUPER TURBO MUFFLER MAT GR SUPRA DB42 URBAN MATTE EDITION HKS Super Turbo Muffler is now available in the sophisticated matte finished "Urban Matte" tail which retains the cool and rugged texture of the metal while shining softly and elegantly. The matte finishing applied even to the inside of the tail, combined with the inner slit processing, which gives it a sophisticated appearance. The detailing of the exhaust parts is proof of HKS' passion