ReadyLift 66-3122 2" Rear Block Kit

The ReadyLift 66-3122 Rear Block Kit will safely add 2" of lift to your GM 2500HD/3500HD SRW Pickup. This will add a slight rake back into your truck for hauling or towing. The ReadyLift Block is based on OEM designs and made from heavy-duty cast iron just like the factory blocks. This ensures maximum strength and long-term reliability. 

For Use Only on Single Rear Wheel 2500HD trucks that have the factory Trailer Package rear springs.  

This kit is not compatible with HD trucks equipped with top-mounted overload springs. 

For Use On 3500HD dual rear wheel trucks. 

Includes new longer U-bolts and hardware OEM style cast iron construction.