Doug Thorley Headers

Doug Thorley Headers

THY-312 / 2001-2011 Chevy/GMC 8.1L Motorhome (W-Series Chassis) Long Tube Headers

Doug Thorley Headers

THY-323Y-C / 1967-1987 Chevy/GMC Truck - LS Swap Long Tube TRI-Y Headers 4.8L-6.2L

Doug Thorley Headers

THY-515-LS-C / 2005-2011 Toyota Tacoma / 07-12 FJ Cruiser 4.0L T304 Long Tube Headers

Doug Thorley Headers

THY-450-C / 1981-1985 Nissan Pickup | 1986-1988 Hardbody | NAP-Z Z24 Engine

Doug Thorley Headers

THY-309-1-C / Universal LS Motor Swap Short Tube Headers 4.8L-6.2L (Rear Swept Exit)

Doug Thorley Headers

THY-361-C / 1961-1964 Chevy Impala - LS Engine Swap Headers 4.8L-6.2L

Doug Thorley Headers

THY-563Y-LS-C / 2005-2009 Toyota 4Runner/ Lexus GX470 4.7L Stainless Steel Long Tube Tri-Y Headers

Doug Thorley Headers

THY-322Y-C / 1961-1966 (& 1987-1991) Chevy/GM Truck - LS Swap Long Tube TRI-Y Headers 4.8L-6.2L

Doug Thorley Headers

89230 / 2005-2009 Toyota 4Runner Lexus GX470 - 4.7L (T304SS Off Road "Race" Use Only)

Doug Thorley Headers

THY-324Y-C / 1967-1972 GM C10 Pickup Truck LS Series Motor Swap 4.8L-6.2L (1-5/8" Primary Tubes)

Doug Thorley Headers

89228 / Performance Mid-pipes with Resonators 2007-2016 Toyota FJ Cruiser / 4Runner 4.0L V6(Off Road/Race Use Only)

Doug Thorley Headers

89227 / Performance Mid-pipes with Resonators 2005-2015 Toyota Tacoma 4.0L V6 (Off Road "Race" Use Only)

Doug Thorley Headers

THY-560Y-L-C / 2007-2019 Toyota Tundra 5.7L 2/4 wd (RACE Use Only)

Doug Thorley Headers

THY-563-SS-C / 2005-2009 Toyota 4Runner / Lexus GX470 4.7L Short Tube Headers

Doug Thorley Headers

THY-340-C / 2006-2009 Impala SS Monte Carlo SS /05-08 Pontiac Grand Prix FXP 07-09 Buick Lacrosse 5.3L

Doug Thorley Headers

THY-465-L-C / 1998-2004 Nissan Frontier Pathfinder Xterra 3.0L-3.3L 2/4wd