BendPak – 4,500 Lb. Capacity, Rolling Bridge Jack

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We designed and engineered the BendPak RJ‐45‐BYB air‐hydraulic rolling bridge jack exclusively for Backyard Buddy™ four‐post lifts. This compact 4,500 pound jack equipped with modified rollers and frame assemblies retracts to a low 3.5” height from the top of the runway surface to accommodate low riding vehicles. The RJ‐45‐BYB rolling bridge jack rolls along the entire length of the Backyard Buddy™ lift so you can safely raise any part of the vehicle. Durable urethane contact pads and stackable adapters safely support a variety of chassis lifting points. Automatic safety locks ensure safe operation. Each RJ‐45‐BYB includes two rubber contact pads and two stackable adapters. Add a Specialty Adapter Kit for even more versatility on your Bcakyard Buddy™ style rolling jack. Specialty Adapter Kit includes: (2) Sliding Pads and (2) Sliding Receivers.

SKU: RJ-45-BYB Categories: , ,


BendPak bridge jacks are designed to be there when you need them and gone when you don’t. Just remove your RJ-45-BYB out of the way when you want the vehicle tires back on your Backyard Buddy™.

Air-hydraulic pump requires 90-120 PSI, 12-25 CFM air source.


  • 4,500-lb. lifting capacity
  • Rubber contact pads
  • Stackable adapters
  • High-pressure hydraulic power unit
  • Optional air-line kit


  • Lifting capacity: 4,500 lbs. / 2,041 kg
  • Wheels – Min width: 36″ / 918 mm
  • Wheels – Max width: 47″ / 1,192 mm
  • Min arm reach: 41″ / 1,043 mm
  • Max arm reach: 59.9″ / 1,521 mm
  • Shipping weight: 305 lbs. / 139 kg
  • Shipping dimensions: 36″ x 22″ x 21″ / 914 mm x 559 mm x 533 mm

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