The MORryde XF12-003 X-Factor Crossmember Drop-Down Adapter Kit adds lateral support to the suspension on your 5th wheel or travel trailer with this high-performance crossmember. It reduces stress on your frame from travel over rough roads, tight cornering, or extreme side forces.• Easy installation â no welding or drilling required• Stress reduction up to 94% at each location• High-strength, low alloy steel fabrication• Additional lateral strength• Adjustable to fit different frames• Requires XF12-001 (not included) High-strength, low alloy steel fabrication Easy installation no welding or drilling required Requires XF12-001 (not included)