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CURT part #17309

CURT Replacement Long Trunnion Weight Distribution Spring Bar (5K - 6K lbs.) #17309


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The CURT weight distribution hitch is a specialized towing system that provides improved vehicle and trailer control by leveling the trailer and more evenly distributing its tongue weight across the trailer's and vehicle's axles. Weight distribution hitches are commonly used on travel trailers and campers but can also be applied to other large loads.

This replacement spring bar is designed to fit the CURT long trunnion bar weight distribution hitch #17300. It features forged steel construction and a durable powder coat finish for long-lasting use. It offers a gross trailer weight capacity of 5,000 - 6,000 lbs., a tongue weight capacity of 500 - 600 lbs. and comes with a pre-attached spring bar chain for convenient installation and tension adjustment.


  • Mounts to a trunnion bar WD hitch head to help level the trailer and tow vehicle
  • Fits the CURT long trunnion bar weight distribution hitch #17300
  • Pre-assembled with spring bar chain for ready attachment
  • Multiple chain links allow for flexible adjustment of tension
  • Constructed from forged steel for optimum strength
  • Protected by a highly durable carbide powder coat finish


  • Includes a 30-5/8" trunnion spring bar, chain and U-bolt


Part Type Replacement Long Trunnion Weight Distribution Spring Bar
Warranty Limited Lifetime Warranty (One-Year Finish, One-Year Parts)
Material Blank
Shipping Weight 16.100
Tongue Weight(TW) 500 LB - 600 LB
Color Black
Gross Trailer Weight(GTW) 5,000 LB - 6,000 LB
Length 30 5/8 IN

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