Grand Rock - 6" 3-Bend O.D./O.D./O.D. Aluminized Y-Pipe Exhaust

Grand Rock - Peterbilt 379 Daycab Aluminized Exhaust Y-Pipe

Grand Rock - Chrome Muffler 5" ID IN-6" ID OUT x 51" Long

Grand Rock - International 10" or 9" x 51" Round Muffler

Grand Rock - International Oval Muffler 8.25 x 11.5 x 32"

1994-2007 Peterbilt 379 8" Seamless Stack Kit w 90 Degree Bend w/Flex & Y-Pipe

Grand Rock 4" 45 Degree bend, 6" X 6" I.D./O.D. Aluminized Exhaust Elbow

Grand Rock - 11" x 36" w 4" IN/Out Freightliner Muffler

Grand Rock - 2003 & Newer Peterbilt 379 8" Duplex Stack Kit

Grand Rock - International 5" Inlets w 4" Outlet Y-Pipe

Grand Rock - M-465 Muffler

Grand Rock - 8" x 11" Oval International HD Muffler Hanger

Grand Rock - 8" x 54", 60" or 68" Aussie Cut O.D. Chrome Spool Pipe

Grand Rock - 2000-2011 Peterbilt 387 11" Round x 61.5" Length (55" body) w 5" ID/OD Muffler

Grand Rock - Type 6 FORD Diesel Truck Muffler 11" x 36" w 5" IN-OUT (M-672)

Grand Rock - 5" Stainless Steel Peterbilt 379 Single 90 Degree Bend Lower Exhaust Elbow

Grand Rock - 9" x 44.5" Type 1 Muffler - 5" I.D./I.D. Aluminized

Tapered 7" Long 2-Bend O.D. Reduced to 5" O.D. Chrome Exhaust Pipe (Left or Right Side)

Grand Rock - 7″ x 48", 52″ or 55" Flat Top O.D. Chrome Spool Pipe

Grand Rock - 2 Position Heat Diverter Tube

7" Kenworth W900B, W900L, T600 or T800 2-Bend O.D. Reduced to 5" I.D. Chrome Exhaust Pipe (Right or Left)

Grand Rock - 9" or 10" 270 Degree Zinc Plated Bracket

Grand Rock - 8" x 54", 60" or 68" Aussie O.D. Chrome Spool Pipe (Bottom)

Grand Rock - Freightliner Classic Y-Pipe