View our Specials! Coupon Code: SaveIn2026
Looking for aftermarket parts to modify or upgrade your 1990 GMC C2500 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 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 C2500 Sierra / Sierra SLX 1988-1995 GMC C2500 Sierra SLE $415.65 |
 IN STOCK - DROPSHIPS 1417-1This Magnum Roller Rocker Arm for Chevy V8 265-400 and V6 200-262 Applications is the ultimate street Rocker. With a 3/8" Stud diameter and 1.52 ratio, it is designed for Serious performance enthusiasts. All Magnum Roller Rocker Arms are constructed from 8620 chromemoly Steel, which is a superior ma... COMP Cams Rocker Arm Chevy SB 1.52 3/8 1988-1993 GMC C2500 Sierra / Sierra SLX 1988-1995 GMC C2500 Sierra SLE $41.15 |
 IN STOCK 1418-1This Magnum Roller Rocker Arm for Chevy V8 265-400 and V6 200-262 Applications is the ultimate street Rocker. With a 3/8" Stud diameter and 1.6 ratio, it is designed for Serious performance enthusiasts. All Magnum Roller Rocker Arms are constructed from 8620 chromemoly Steel, which is a superior mat... COMP Cams Rocker Arm Chevy SB 1.6 3/8in 1988-1993 GMC C2500 Sierra / Sierra SLX 1988-1995 GMC C2500 Sierra SLE $42.11 |
 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 C2500 Sierra / Sierra SLX 1988-1995 GMC C2500 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 C2500 Sierra / Sierra SLX 1988-1995 GMC C2500 Sierra SLE $416.16 |