Welcome to Princeton Delivery Systems,
the leading manufacturer of truck mounted
forklift products and the home of the


Princeton’s PiggyBack® Forklift has become a field-proven favorite for delivering lumber and lumber products that has revolutionized both customer service and delivery efficiency.

The Concept

The Princeton PiggyBack® Truck-Mounted Forklift is a proven method for delivery of OSB, engineered wood, and stick lumber products. Historically, materials were delivered to the edge of a site by a dump bed truck or truck-mounted crane. The customer then had to move the materials again to wherever the work was being done. The PiggyBack® truck-mounted forklift enables your driver to spot-deliver materials precisely where your customer wants them, faster and easier, on virtually any work site with unmatched stability.

A PiggyBack® can increase efficiency, not only by eliminating costly double-handling, but also by reducing delivery related product damage. It also is invaluable for pickups or for correcting misplacement of products on the job site.

PiggyBacks are available in many, different models with a wide range of available lift heights...capacities up to 8,000 lb... and other, special features that allow it to be configured to your specific delivery requirements. All PiggyBacks mount in less than a minute behind virtually any truck or trailer for easy transport to and from the job site.

If you currently use a tow-behind or trailered forklifts, you already recognize the benefits of having a portable unloading unit with your delivery vehicle. The Princeton PiggyBack® Truck-Mounted Forklift provides all these benefits in a highly efficient package that eliminates the complications of towed vehicles.

The Solution

There are PiggyBack® models designed specifically for the demanding needs of the lumber industry.



The 5,500 lb capacity PB55+ is the hands down favorite choice of the brick, block, and paver industries. It's rugged design, center seating make it ideal for most construction site delivery applications. The PB55+ offers high horsepower, excellent ground clearance and Princeton’s exclusive Trac-Loc traction control system to tackle the roughest job sites. An optional brick & block package makes handling cubed products easier on a job site.



The 5,500 lb. capacity PB55X+ is the first unit in the industry equipped with a standard "Double Reach" feature. This unique feature, which adds an extending scissors reach system to the standard moving mast, doubles the length of the reach of the PB55X+ across the bed. With the PB55X+, your driver now can unload an entire truck or trailer from one side, even from positions where tanks or tandems are located.



The PB70+ Princeton PiggyBack® Delivery System is the most stable, reliable and powerful unit of its kind the industry. It is also the only unit that has 7,000 lb capacity, rated by rough terrain standards. Anti-stall hydraulics, 31" pneumatic sealed tires, center seating, a 56 HP diesel engine and excellent stability make this the most flexible truck mounted forklift for rough terrain deliveries. This unit can deliver a variety of materials faster and safer…almost anywhere on a job site.



The 8,000 lb. capacity PB80+ is designed for those who handle heavy products, or just simply need to handle more product at one time. As with the PB55+, a drywall handling package is optional. This package features load support arms that provide added support a wide loads when traveling on rough terrain. Also, like the PB55+, the PB80+ offers center seating to assure that your operator has a clear view of not only the load but also both front tires. This enables the operator to both position the load more accurately anywhere on the job site and minimize the chance of running over unforeseen obstacles.



The PiggyBack® PB45 is one of the most stable and reliable three wheel-drive 4,500 lb. capacity machine on the market. The machine comes standard with a powerful and reliable 48 HP diesel engine, anti-stall hydraulics, 29" tires, center seating and Trac-Loc for added traction on rugged terrain. The machine is available with either a moving mast or scissors mast. In addition, in the Lo-Pro configuration, the machine is able to deliver a variety of materials to areas previously inaccessible – as low as 81"!


PB55+ 4-Way

The 5,500 lb. capacity PiggyBack® PB55+ 4-Way offers the most versatility in truck-mounted forklifts. It has the lift capacity and power of a PB55+, but adds four directional steering. With the flip-of-a-switch the PB55+ 4-Way  converts into side-directional mode permitting the unit to be driven sideways in the direction of the load. driving the unit “sideways” in the direction of the load. Ideal for delivering extra long loads in those hard to negotiate, highly congested areas previously inaccessible at most construction job sites. Nothing can outmaneuver or outperform the versatile PiggyBack®  PB55+ 4-Way.