• 6061-T6 HEAT-TREATED FORGED ALUMINUM • DOT, FMVSS126, SAE J2530, J267, J175 COMPLIANT• ASTM SALT SPRAY & CHIP RESISTANT• RADIOGRAPH TESTED (XRAY)• 4,000 LB. LOAD RATED• REDUCES O/A TRUCK WEIGHT BY 320 LBS.•• DIRECT BOLT-ON (NO ADAPTERS)• ELIMINATES VIBRATION• RESTORES ORIGINAL RIDE QUALITY• TIRE LIFE OF 70,000 IN-SERVICE MILES• REDUCES VEHICLE DOWN-TIME• NO TIRE PRESSURE MONITORING SYSTEM ADAPTERS• REDUCES VIBRATION-INDUCED TRUCK COMPONENT FAILURES • BROKEN SUSPENSION COMPONENTS • BROKEN TRUCK BOX DOOR LATCH FAILURES • CRACKED DASH BOARDS • PREMATURE WHEEL BEARING FAILURES • BROKEN DRIVELINE RELATED ISSUES