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Steadi-Flex® Integrated Sway Control Weight Distribution Kit, 10,000 lbs. Capacity, Shank Included

Part No 66559
  • No drill installation
  • Will fit up to 7” trailer frames with Bottom Mount Coupler
  • Will fit most trailer frames up to 7” with Top Mount Couplers (see Technical Bulletin TB17-01 for clearance needed)
  • Hitch bar included
  • Limited Lifetime warranty
  • Integrated sway control
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Ships free & fast to local dealers
Ships free & fast to local dealers

We ship your order directly to your choice of one of our 1,250+ ShopHitches Network Dealers. More Info More Info

Expert installation available nationwide
Brand: Reese
Part Number: 66559
Warranty: Limited Lifetime Warranty
UPC: 016118128079
Dimensions: 39.75" x 11" x 10" (Shipping)
Finish: Black Powder Coat
Weight: 107.3 lbs
Tongue Weight: 1,000 lbs.
Capacity: 10,000 lbs.
Color: Black
Bolt Grade: Grade 5
Ball Diameter: N/A
Safety Chains Included: No
Material: Steel
Universal Or Specific Fit: Universal
Adjustable Arms: Yes
Includes Sway Control: Yes
Mounting Hardware Included: Yes

When used together, the following parts make up the product (Kit) at the top of the page. They can be purchased together as part of the kit or as separate components for replacement or repair; however, ALL of the following MUST be used in order for the above product to work as advertised.

Tool Sizes Needed
Hammer --
Screwdriver Standard
Sockets 15/16 in., 1-1/8 in., 1-7/8 in.
Tape Measure --
Torque Wrench Capable of 300 ft.-lbs, Capable of 450 ft.-lbs.
Wrenches 15/16 in., 1-1/8 in.
Replacement Part - WD

Replacement Part - WD

Part No 58527

Replacement Part, Friction Pad Kit for STEADi-FLEX® Weight Distributing Kit #66559, #66560, & #66561

Replacement Part - WD

Replacement Part - WD

Part No 58528

Replacement Part, Ball Mount Hardware Kit for STEADi-FLEX® Weight Distributing Kit #66559, #66560, & #66561

This product is not vehicle specific.

Below is a listing of commonly asked questions and answers for the Steadi-Flex® Integrated Sway Control Weight Distribution Kit, 10,000 lbs. Capacity, Shank Included. If you can't find the information you need here, please submit your question to us using the form in our contact page.

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Will this work with my Top Mounted Coupler?
Please see the attached document that will help explain the fitment of this unit on trailers with top mounted couplers.