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20 Ton 8" Extension

Safe Jack

  • $ 12700

PN: 37313
UPC: 854185005585

The 8-inch Bottle Jack Extension adds a whopping 8 inches of height to the available stroke of a bottle jack. Don't risk your health and safety piling up unstable wood or rock under the jack; start lifting safer! 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 20-ton adapters will fit over a bottle jack saddle diameter of 1.75 inches - 2.25 inches (44.45 mm - 57.15 mm.) If the hydraulic cylinder (ram) is significantly smaller than this, 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 20-ton Extension Screw Collar (Premade to fit the jacks we carry)


    • Fits over bottle jacks with 1.75 inches - 2.25 inches (44.45 mm - 57.15 mm) diameter saddle
    • 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
    • Made in the USA


    Customer Reviews

    Based on 5 reviews
    Martin Logan (Pahrump, US)
    I'm happy.

    I bought the recovery kit minus the jack. All appears well made and certainly very sturdy.

    David SARGENT (Toronto, CA)
    Perfect for my 5th Wheel

    I bought a full suite of 20 ton bottle jack extensions and the sleeve adapter. I find the fit and stability excellent. Far safer than stacks of wood with the jack on top! I do find the price and shipping to be expensive.

    Pablo Montero (Richmond, US)

    20 Ton 8" Extension

    Squire Rusticus (Linwood, US)

    Recently I purchased the 20 ton accessory kit and added the above mentioned extension, to complete my kit. Ofcourse I had to test my kit once it came, even though it was freezing outside, finding it worked extraordinarily well. Another great bit of kit to help with any, lifting needs I should encounter. Recommended for anyone that cares about their safety, and spends any amount of time on the road. Better to be prepared, then sorry.

    Wade, Thank you for your comments. You are right. It is easy and it does make lifting and supporting simple and more importantly, SAFER!

    Derek Moore (Jeffersonville, US)
    motorhome lift

    I use these to lift my bus. I have a tag axle motor home that weighs around 20 tons. These help me lift with 20 ton bottle jacks at frame. Which is much better than at axles for what I do most. Which is tires and suspension. The cradles hold on frame rails better than screw head of jack.

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