Looking for aftermarket parts to modify or upgrade your 1990 GMC K2500 with rocker arms? At Tunersports.com we carry a huge selection of the top name brand performance rocker arm parts and accessories.

IN STOCK - DROPSHIPS 1617-12Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity ... COMP Cams Rocker Arms CS 1.52 3/8 Ultra P 1988-1993 GMC K2500 Sierra / Sierra SLX 1988-1995 GMC K2500 Sierra SLE $401.18 |
OUT OF STOCK 1617-16Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity ... COMP Cams Rocker Arms CS1.52 3/8 Ultra P 1988-1993 GMC K2500 Sierra / Sierra SLX 1988-1995 GMC K2500 Sierra SLE $527.54 |
OUT OF STOCK 1618-12Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity ... COMP Cams Rocker Arms CS 1.6 3/8 Ultra P 1988-1993 GMC K2500 Sierra / Sierra SLX 1988-1995 GMC K2500 Sierra SLE $402.15 |
OUT OF STOCK 1618-16Ultra Pro Magnumâ„¢ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums but they also take Stud mount Rocker performance, stability and value to a whole new level. The 8650 chromemoly material and arched, web-like design deliver increased strength and rigidity ... COMP Cams Rocker Arms CS 1.6 3/8 Ultra P 1988-1993 GMC K2500 Sierra / Sierra SLX 1988-1995 GMC K2500 Sierra SLE $528.50 |
IN STOCK - DROPSHIPS 19015-16The Comp Cams Ultra ARC Aluminum Series Rocker Arms increase engine power, improve valvetrain stability, and enhance oiling efficiency. Their extruded design—developed using FEA analysis—creates a stronger, stiffer rocker body without adding unnecessary weight. The ARC series rocker arms feature... COMP Cams Alum Rocker Arms CS 1.5 Narro 1988-1993 GMC K2500 Sierra / Sierra SLX 1988-1995 GMC K2500 Sierra SLE $415.65 |
IN STOCK - DROPSHIPS RPE1417-12COMP Cams Rocker Arm/Pushrod Kit Magnum 1988-1993 GMC K2500 Sierra / Sierra SLX 1988-1995 GMC K2500 Sierra SLE $211.19 |
OUT OF STOCK RPE1418-12COMP Cams Rocker Arm/Pushrod Kit Magnum 1988-1993 GMC K2500 Sierra / Sierra SLX 1988-1995 GMC K2500 Sierra SLE $214.08 |
IN STOCK - DROPSHIPS RPG103you know all the parts match. Confidently install your new Rocker arms and experience the difference. All components are also available as separate pieces.... COMP Cams Rocker Arm/Pushrod Kit CS 1.6 1988-1993 GMC K2500 Sierra $308.59 |

IN STOCK - DROPSHIPS 1417-8These Magnum Roller Rocker Arms for Chevy V8 265-400 and V6 200-262 Applications are the ultimate street Rocker. With a 3/8" Stud diameter and 1.52 ratio, they are designed for Serious performance enthusiasts. All Magnum Roller Rocker Arms are constructed from 8620 chromemoly Steel, which is a super... COMP Cams Magnum Roller Rockers Chevy SB 1988-1993 GMC K2500 Sierra $133.07 |
IN STOCK - DROPSHIPS 1418-8These Magnum Roller Rocker Arms for Chevy V8 265-400 and V6 200-262 Applications are the ultimate street Rocker. With a 3/8" Stud diameter and 1.6 ratio, they are designed for Serious performance enthusiasts. All Magnum Roller Rocker Arms are constructed from 8620 chromemoly Steel, which is a superi... COMP Cams Magnum Roller Rockers Chevy S 1988-1993 GMC K2500 Sierra / Sierra SLX 1988-1995 GMC K2500 Sierra SLE $134.99 |
OUT OF STOCK 17002-12These High Energyâ„¢ Die Cast Aluminum Roller Rocker Arms for Chevy V6 200-262 Applications are perfect for street and moderate Race use. With a 3/8" Stud diameter and 1.6 ratio, the die cast, larger-than-stock body of the Rocker arms is made of aluminum for superior strength with light overall ... COMP Cams High Energy Alum Rocker SBC 1. 1988-1993 GMC K2500 Sierra / Sierra SLX 1988-1995 GMC K2500 Sierra SLE $263.26 |
IN STOCK - DROPSHIPS 17005-12These High Energy Die Cast Aluminum Roller Rocker Arms for Chevy V8 265-400 Applications are perfect for street and moderate Race use. With a 7/16" Stud diameter and 1.6 ratio, the die cast, larger-than-stock body of the Rocker arms is made of aluminum for superior strength with light overall weight... COMP Cams High Energy Alum Rocker SBC 1 1988-1993 GMC K2500 Sierra / Sierra SLX 1988-1995 GMC K2500 Sierra SLE $263.26 |
IN STOCK - DROPSHIPS 19017-16The Comp Cams Ultra ARC Aluminum Series Rocker Arms increase engine power, improve valvetrain stability, and enhance oiling efficiency. Their extruded design—developed using FEA analysis—creates a stronger, stiffer rocker body without adding unnecessary weight. The ARC series rocker arms feature... COMP Cams 88+ Chevrolet Small Block Ultra ARC Narrow Aluminum Series Rocker Arm - Set of 16 1988-1993 GMC K2500 Sierra / Sierra SLX 1988-1995 GMC K2500 Sierra SLE $415.65 |

IN STOCK - DROPSHIPS 19015-1The Comp Cams Ultra ARC Aluminum Series Rocker Arms increase engine power, improve valvetrain stability, and enhance oiling efficiency. Their extruded design—developed using FEA analysis—creates a stronger, stiffer rocker body without adding unnecessary weight. The ARC series rocker arms feature... COMP Cams Alum Rocker Arm CS 1.5 Narrow 1988-1993 GMC K2500 Sierra / Sierra SLX 1988-1995 GMC K2500 Sierra SLE $50.79 |
IN STOCK - DROPSHIPS 19018-16The Comp Cams Ultra ARC Aluminum Series Rocker Arms increase engine power, improve valvetrain stability, and enhance oiling efficiency. Their extruded design—developed using FEA analysis—creates a stronger, stiffer rocker body without adding unnecessary weight. The ARC series rocker arms feature... COMP Cams Alum. Rocker Arm CS 1.6 3/8 Narrow Body - Ultra Gold 1988-1993 GMC K2500 Sierra / Sierra SLX 1988-1995 GMC K2500 Sierra SLE $416.16 |