View our Specials! Coupon Code: SaveIn2026
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 IN STOCK - DROPSHIPS 89199Twice the coverage - half the inventory. Changes caster positive or negative from 1/2 degree to 4 degree. APPS: Any solid axle RWD or 4WD vehicle.... SPC Performance ZINC AXLE SHIMS 1/2 deg.(6) 1988-1989 GMC V3500 High Sierra / Sierra Classic 1988-1991 GMC V3500 Base 1990-1991 GMC V3500 SLE $99.01 |
 IN STOCK - DROPSHIPS 89299Twice the coverage - half the inventory. Changes caster positive or negative from 1/2 degree to 4 degree. APPS: Any solid axle RWD or 4WD vehicle.... SPC Performance ZINC AXLE SHIMS 1 deg.(6) 1988-1989 GMC V3500 High Sierra / Sierra Classic 1988-1991 GMC V3500 Base 1990-1991 GMC V3500 SLE $102.76 |
 IN STOCK - DROPSHIPS 89399Twice the coverage - half the inventory. Changes caster positive or negative from 1/2 degree to 4 degree. APPS: Any solid axle RWD or 4WD vehicle.... SPC Performance ZINC AXLE SHIMS 1-1/2 deg.(6) 1988-1989 GMC V3500 High Sierra / Sierra Classic 1988-1991 GMC V3500 Base 1990-1991 GMC V3500 SLE $105.62 |
 IN STOCK - LOW 89499Twice the coverage - half the inventory. Changes caster positive or negative from 1/2 degree to 4 degree. APPS: Any solid axle RWD or 4WD vehicle.... SPC Performance ZINC AXLE SHIMS 2 deg.(6) 1988-1989 GMC V3500 High Sierra / Sierra Classic 1988-1991 GMC V3500 Base 1990-1991 GMC V3500 SLE $104.30 |
 IN STOCK - DROPSHIPS 89599Twice the coverage - half the inventory. Changes caster positive or negative from 1/2 degree to 4 degree. APPS: Any solid axle RWD or 4WD vehicle.... SPC Performance ZINC AXLE SHIMS 2-1/2 deg.(6) 1988-1989 GMC V3500 High Sierra / Sierra Classic 1988-1991 GMC V3500 Base 1990-1991 GMC V3500 SLE $112.95 |
 IN STOCK - DROPSHIPS 89699Twice the coverage - half the inventory. Changes caster positive or negative from 1/2 degree to 4 degree. APPS: Any solid axle RWD or 4WD vehicle.... SPC Performance ZINC AXLE SHIMS 3 deg.(6) 1988-1989 GMC V3500 High Sierra / Sierra Classic 1988-1991 GMC V3500 Base 1990-1991 GMC V3500 SLE $113.96 |
 IN STOCK - DROPSHIPS 89799Twice the coverage - half the inventory. Changes caster positive or negative from 1/2 degree to 4 degree. APPS: Any solid axle RWD or 4WD vehicle.... SPC Performance ZINC AXLE SHIMS 3-1/2 deg.(6) 1988-1989 GMC V3500 High Sierra / Sierra Classic 1988-1991 GMC V3500 Base 1990-1991 GMC V3500 SLE $119.33 |
 IN STOCK - DROPSHIPS 89899Twice the coverage - half the inventory. Changes caster positive or negative from 1/2 degree to 4 degree. APPS: Any solid axle RWD or 4WD vehicle.... SPC Performance ZINC AXLE SHIMS 4 deg.(6) 1988-1989 GMC V3500 High Sierra / Sierra Classic 1988-1991 GMC V3500 Base 1990-1991 GMC V3500 SLE $124.64 |