Replaces Standard Railmount Hardware. Allows Toolbox to be installed flush against BackRack(TM). Eliminates gap between Toolbox and Backrack. Allows Toolbox to be installed without drilling into truck bed. Standard 21 inches. Optional 31 inches available.Installation InstructionsThis Part Fits: Year Make Model Submodel 1978-1980 Chevrolet C10 Big Ten 1975-1981 Chevrolet C10 Cheyenne 1981-1986 Chevrolet C10 Custom 1975-1980 Chevrolet C10 Custom Deluxe 1981 Chevrolet C10 Deluxe 1975-1986 Chevrolet C10 Scottsdale 1975-1986 Chevrolet C10 Silverado 1968-1974 Chevrolet C10 Pickup Base 1990-1993 Chevrolet C1500 454 SS 1994-1997 Chevrolet C1500 Base 1988-1998 Chevrolet C1500 Cheyenne 1988-1992 Chevrolet C1500 Scottsdale 1988-1998 Chevrolet C1500 Silverado 1990-1998 Chevrolet C1500 WT 1975-1981 Chevrolet C20 Cheyenne 1981-1986 Chevrolet C20 Custom 1975-1980 Chevrolet C20 Custom Deluxe 1981 Chevrolet C20 Deluxe 1975-1986 Chevrolet C20 Scottsdale 1975-1986 Chevrolet C20 Silverado 1968-1974 Chevrolet C20 Pickup Base 1994-1997 Chevrolet C2500 Base 1988-1998 Chevrolet C2500 Cheyenne 1988-1992 Chevrolet C2500 Scottsdale 1988-1998 Chevrolet C2500 Silverado 1994-1995,1998 Chevrolet C2500 WT 1975-1981 Chevrolet C30 Cheyenne 1981-1986 Chevrolet C30 Custom 1975-1980 Chevrolet C30 Custom Deluxe 1981 Chevrolet C30 Deluxe 1975-1986 Chevrolet C30 Scottsdale 1975-1986 Chevrolet C30 Silverado 1968-1974 Chevrolet C30 Pickup Base 1994-1997 Chevrolet C3500 Base 1988-1998 Chevrolet C3500 Cheyenne 1988-1992 Chevrolet C3500 Scottsdale 1988-1998 Chevrolet C3500 Silverado 2015-2020 Chevrolet Colorado Base 2015-2025 Chevrolet Colorado LT 2023-2025 Chevrolet Colorado Trail Boss 2015-2025 Chevrolet Colorado WT 2015-2025 Chevrolet Colorado Z71 2017-2025 Chevrolet Colorado ZR2 1975-1981 Chevrolet K10 Cheyenne 1981-1986 Chevrolet K10 Custom 1975-1980 Chevrolet K10 Custom Deluxe 1981 Chevrolet K10 Deluxe 1975-1986 Chevrolet K10 Scottsdale 1975-1986 Chevrolet K10 Silverado 1968-1974 Chevrolet K10 Pickup Base 1994-1997 Chevrolet K1500 Base 1988-1998 Chevrolet K1500 Cheyenne 1988-1992 Chevrolet K1500 Scottsdale 1988-1998 Chevrolet K1500 Silverado 1991 Chevrolet K1500 Sport 1990-1998 Chevrolet K1500 WT 1975-1981 Chevrolet K20 Cheyenne 1981-1986 Chevrolet K20 Custom 1975-1980 Chevrolet K20 Custom Deluxe 1981 Chevrolet K20 Deluxe 1975-1986 Chevrolet K20 Scottsdale 1975-1983,1985-1986 Chevrolet K20 Silverado 1968-1974 Chevrolet K20 Pickup Base 1994-1997 Chevrolet K2500 Base 1988-1998 Chevrolet K2500 Cheyenne 1988-1992 Chevrolet K2500 Scottsdale 1988-1998 Chevrolet K2500 Silverado 1994-1995,1998 Chevrolet K2500 WT 1977-1981 Chevrolet K30 Cheyenne 1981-1986 Chevrolet K30 Custom 1977-1980 Chevrolet K30 Custom Deluxe 1981 Chevrolet K30 Deluxe 1977-1986 Chevrolet K30 Scottsdale 1977-1986 Chevrolet K30 Silverado 1968-1974 Chevrolet K30 Pickup Base 1994-1997,1999-2000 Chevrolet K3500 Base 1988-1998 Chevrolet K3500 Cheyenne 1999-2000 Chevrolet K3500 LS 1988-1992 Chevrolet K3500 Scottsdale 1988-1998 Chevrolet K3500 Silverado 1982-1987 Chevrolet S10 Base 1982-1987 Chevrolet S10 Durango 1982-1987 Chevrolet S10 Sport 1982-1987 Chevrolet S10 Tahoe 1999-2005 Chevrolet Silverado 1500 Base 2016-2020 Chevrolet Silverado 1500 Custom 2019-2020 Chevrolet Silverado 1500 Custom Trail Boss 2014-2020 Chevrolet Silverado 1500 High Country 2004-2006,2009-2013 Chevrolet Silverado 1500 Hybrid 1999-2013,2015-2018 Chevrolet Silverado 1500 LS 1999-2020 Chevrolet Silverado 1500 LT 2019-2020 Chevrolet Silverado 1500 LT Trail Boss 2007-2020 Chevrolet Silverado 1500 LTZ 2019-2020 Chevrolet Silverado 1500 RST 2003-2006 Chevrolet Silverado 1500 SS 2015-2020 Chevrolet Silverado 1500 SSV 2002-2020 Chevrolet Silverado 1500 WT 2010-2013 Chevrolet Silverado 1500 XFE 2004-2005 Chevrolet Silverado 1500 Z71 Off-Road 2007 Chevrolet Silverado 1500 Classic Hybrid 2007 Chevrolet Silverado 1500 Classic LS 2007 Chevrolet Silverado 1500 Classic LT 2007 Chevrolet Silverado 1500 Classic SS 2007 Chevrolet Silverado 1500 Classic WT 2005 Chevrolet Silverado 1500 HD Base 2001-2003,2005 Chevrolet Silverado 1500 HD LS 2001-2003,2005-2006 Chevrolet Silverado 1500 HD LT 2007 Chevrolet Silverado 1500 HD Classic LT 2019 Chevrolet Silverado 1500 LD Custom 2019 Chevrolet Silverado 1500 LD LT 2019 Chevrolet Silverado 1500 LD WT 1999-2004 Chevrolet Silverado 2500 Base 1999-2004 Chevrolet Silverado 2500 LS 1999-2004 Chevrolet Silverado 2500 LT 2004 Chevrolet Silverado 2500 WT 2001-2005 Chevrolet Silverado 2500 HD Base 2020 Chevrolet Silverado 2500 HD Custom 2015-2020 Chevrolet Silverado 2500 HD High Country 2001-2006 Chevrolet Silverado 2500 HD LS 2001-2020 Chevrolet Silverado 2500 HD LT 2007-2020 Chevrolet Silverado 2500 HD LTZ 2003-2020 Chevrolet Silverado 2500 HD WT 2007 Chevrolet Silverado 2500 HD Classic LS 2007 Chevrolet Silverado 2500 HD Classic LT 2007 Chevrolet Silverado 2500 HD Classic WT 2001-2005 Chevrolet Silverado 3500 Base 2001-2006 Chevrolet Silverado 3500 LS 2001-2006 Chevrolet Silverado 3500 LT 2004,2006 Chevrolet Silverado 3500 WT 2007 Chevrolet Silverado 3500 Classic LS 2007 Chevrolet Silverado 3500 Classic LT 2007 Chevrolet Silverado 3500 Classic WT 2015-2020 Chevrolet Silverado 3500 HD High Country 2007-2020 Chevrolet Silverado 3500 HD LT 2007-2020 Chevrolet Silverado 3500 HD LTZ 2007-2020 Chevrolet Silverado 3500 HD WT 2001-2005 Ford Ranger Edge 1998-2002 Ford Ranger EV 2005-2009 Ford Ranger FX4 2002 Ford Ranger Postal 1993-1998 Ford Ranger Splash 1993,1997,2006-2011 Ford Ranger Sport 1993-1997,2005-2007 Ford Ranger STX 2004 Ford Ranger Tremor 1993-2011 Ford Ranger XL 1995 Ford Ranger XL Sport 1993-2011 Ford Ranger XLT 1975-1978 GMC C15 Base 1977-1978 GMC C15 Heavy Half 1975-1978 GMC C15 High Sierra 1977 GMC C15 Indy Hauler 1975-1978 GMC C15 Sierra Classic 1975-1978 GMC C15 Sierra Grande 1978 GMC C15 Street Coupe 1968-1974 GMC C15/C1500 Pickup Base 1979-1986 GMC C1500 Base 1979-1980 GMC C1500 Heavy Half 1979-1986 GMC C1500 High Sierra 1988-1993 GMC C1500 Sierra 1979-1986 GMC C1500 Sierra Classic 1979-1982 GMC C1500 Sierra Grande 1997 GMC C1500 Sierra GT 1994-1998 GMC C1500 Sierra SL 1988-1998 GMC C1500 Sierra SLE 1994-1998 GMC C1500 Sierra SLT 1988-1993 GMC C1500 Sierra SLX 1994-1998 GMC C1500 Sierra Special 1979-1982 GMC C1500 Street Coupe 1975-1978 GMC C25 Base 1975-1978 GMC C25 High Sierra 1975-1978 GMC C25 Sierra Classic 1975-1978 GMC C25 Sierra Grande 1968-1974 GMC C25/C2500 Pickup Base 1979-1986 GMC C2500 Base 1979-1986 GMC C2500 High Sierra 1988-1993 GMC C2500 Sierra 1979-1986 GMC C2500 Sierra Classic 1979-1982 GMC C2500 Sierra Grande 1994-1998 GMC C2500 Sierra SL 1988-1998 GMC C2500 Sierra SLE 1994-1998 GMC C2500 Sierra SLT 1988-1993 GMC C2500 Sierra SLX 1975-1978 GMC C35 Base 1975-1978 GMC C35 High Sierra 1975-1978 GMC C35 Sierra Classic 1975-1978 GMC C35 Sierra Grande 1979-1986 GMC C3500 Base 1979-1986 GMC C3500 High Sierra 1988-1993 GMC C3500 Sierra 1979-1986 GMC C3500 Sierra Classic 1979-1982 GMC C3500 Sierra Grande 1994-1998 GMC C3500 Sierra SL 1988-1998 GMC C3500 Sierra SLE 1994-1998 GMC C3500 Sierra SLT 1988-1993 GMC C3500 Sierra SLX 2018-2020 GMC Canyon All Terrain 2021-2025 GMC Canyon AT4 2023-2025 GMC Canyon AT4X 2015-2020 GMC Canyon Base 2017-2025 GMC Canyon Denali
