FITMENT 1 - Upper Control Arm Lift Kits Only Compatible with 6-Lug Wheel. Compatible with 2014-2018 GMC Sierra 1500 New Body 2WD 4WD (Only Oe Forged/ Casting Steel Arm), 2007-2014 GMC Sierra 1500/ Yukon 1500/ Yukon XL 1500 2WD 4WD. FITMENT 2 - Upper Control Arm Lift Kits Replacement for K80669 (Left) , K80670 (Right). Compatible with 2014-2018 Chevrolet Silverado 1500 New Body 2WD 4WD (Only Oe Forged/ Casting Steel Arm), 2007-2014 Chevrolet Silverado/ Avalanche/ Tahoe/ Suburban 1500 2WD 4WD. 2-4" LIFTS - The upper control arm is designed for trucks with a 2-4 inch leveling/lift kit. Better correction of the upper ball joint angle, fixed suspension and crankshaft, and improved steering performance. PREMIUM QUALITY - Front upper control arm with ball joint lift kit is made of high strength steel. Powder coated surface, not easy to rust, longer lifespan. The red polished exterior makes your truck look more aggressive. The tubular design provides better performance when you are driving or off-road. The ball joint rotates between the control arm and the steering joint for safer and more stable driving. PAY ATTENTION - No Instructions. You will receive 2Pcs x Red Front Upper Control Arms & Mounting Hardware. No drilling and cutting required, mounts directly to your pickup. Completely replaces your old or broken control arms. FITMENT 1 - Upper Control Arm Lift Kits Only Compatible with 6-Lug Wheel. Compatible with 2014-2018 GMC Sierra 1500 New Body 2WD 4WD (Only Oe Forged/ Casting Steel Arm), 2007-2014 GMC Sierra 1500/ Yukon 1500/ Yukon XL 1500 2WD 4WD. FITMENT 2 - Upper Control Arm Lift Kits Replacement for K80669 (Left) , K80670 (Right). Compatible with 2014-2018 Chevrolet Silverado 1500 New Body 2WD 4WD (Only Oe Forged/ Casting Steel Arm), 2007-2014 Chevrolet Silverado/ Avalanche/ Tahoe/ Suburban 1500 2WD 4WD. 2-4" LIFTS - The upper control arm is designed for trucks with a 2-4 inch leveling/lift kit. Better correction of the upper ball joint angle, fixed suspension and crankshaft, and improved steering performance. PREMIUM QUALITY - Front upper control arm with ball joint lift kit is made of high strength steel. Powder coated surface, not easy to rust, longer lifespan. The red polished exterior makes your truck look more aggressive. The tubular design provides better performance when you are driving or off-road. The ball joint rotates between the control arm and the steering joint for safer and more stable driving. PAY ATTENTION - No Instructions. You will receive 2Pcs x Red Front Upper Control Arms & Mounting Hardware. No drilling and cutting required, mounts directly to your pickup. Completely replaces your old or broken control arms.