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6 Ton 8.5"-12" Adjustable Extension

Safe Jack

  • $ 8300

PN: 37113
UPC: 854185005127

The 8.5-inch to 12-inch Adjustable Bottle Jack Extension adds as much height as you need to your bottle jack. With the secure steel pin, the Extension can be adjusted on the fly to adapt to just about any recovery situation. It's like adding two layers of 4X and one layer of 2X lumber under your jack, only it's much safer and more stable! Multiple Extensions can be stacked to increase the height of the hydraulic cylinder (ram.) All of our made-in-the-USA Extensions and Lift Pads feature a solid steel shaft.

Safe Jack utilizes the Extension Screw Collar to create a secure engagement for the Extensions and Lift Pads, as well as to maximize the available stroke to an additional 1.5 inches. These premade Extension Screw Collars are measured specifically for the bottle jack brands we carry. If you have your own bottle jack you wish to use instead, you may need to purchase a Custom Extension Screw Collar. If you opt out of purchasing a Custom Extension Screw Collar altogether, the adapters may still work, but you will not achieve the additional 1.5 inches of stroke. The 6-ton adapters will fit over a bottle jack saddle diameter of 1.25 inches (31.75 mm) or less. If the hydraulic cylinder (ram) is significantly smaller than 1.25 inches, we advise against using the adapters without an Extension Screw Collar, as the point of engagement will be unstable.

Purchase a Custom Extension Screw Collar

Purchase a Safe Jack 6-ton Extension Screw Collar (Premade to fit the jacks we carry)

6-ton accessories not for use on Toyota OEM or telescoping jacks. 


  • Fits over bottle jacks with a saddle diameter of 1.25 inches (31.75 mm) or less
  • 2 inches of internal engagement
  • Steel construction
  • Durable powder coat finish
  • Compatible with most bottle jacks
  • Numerous stacking combinations with other Safe Jack Extensions & Lift Pads
  • Compatible with Safe Jack 12 & 20-ton Bottle Jack Ram Adapters
  • Made in the USA

    Overall length: 10.5” closed, 14” extended
    Wt. 4.2 lbs.


    Customer Reviews

    Based on 10 reviews
    Darren Bonak (Spring Hill, US)

    Used it to Jack my fifth wheel up for hearing service. Beats using a stack of wood blocks. The best part is it’s safer!

    Edward Callahan (Victorville, US)
    Best product I bought

    This is the hands down most used product I own. So glad I purchased it!

    jerald cross (Albuquerque, US)
    Perfect Jack Extension

    The Safe Jack 6 ton adjustable extension and flat pad are the perfect devices I needed to jack my RV and truck without adding allot of blocks or other spacers to jack my vehicles off the ground

    Don (Little Rock, US)
    on shaky ground?

    adapters work good and provide a stable platform. will recommend to friends

    Thomas Carlson (San Diego, US)

    Very pleased. Wish I had this set up before the last RV flat.

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