B&W Continuum™ WDHK4501 Weight Distribution Hitch | Underslung Coupler

Upgrade your towing experience with the industry-leading B&W Continuum™ Weight Distribution Hitch (WDHK4501)—a fully engineered solution built to maximize stability, control, and safety. Now available at newrangeonline.com, this innovative system includes the WDHH4500 Head Assembly and the WDHL4511 Load Bar Unit, specifically designed for underslung trailer couplers.

The Continuum™ series redefines weight distribution with a next-generation load bar mechanism that automatically adjusts to improve balance and trailer tracking under real-world road conditions. Unlike traditional bar-style hitches, Continuum™ technology provides quieter operation, easier setup, and a smoother towing experience without the harsh noise or rigid tensioning found in older systems.

Perfect for trailers equipped with underslung couplers, the WDHK4501 ensures optimal leverage and weight transfer while maintaining B&W’s signature durability and precision engineering. With a 2-inch shank and factory-installed 2-5/16” hitch ball, this kit is ready for reliable, heavy-duty towing straight out of the box.

Key Features:

• Complete Continuum™ Weight Distribution System

  • Includes WDHH4500 Head Assembly

  • Includes WDHL4511 Load Bar Unit (underslung coupler specific)

• Designed for underslung trailer couplers

• Automatic load leveling for superior stability

• 2” shank fits Class III/IV receiver hitches

• Pre-installed 2-5/16” hitch ball

• Significantly reduces sway, bounce, and porpoising

• Quiet, low-maintenance operation

• Quick and simple setup – no traditional spring bars required

• Heavy-duty steel construction for long-term durability

• Made in the USA with B&W quality craftsmanship

Specifications:

• Part Number: WDHK4501

• Head Assembly: WDHH4500

• Load Bar Unit: WDHL4511

• Shank Size: 2”

• Ball Size: 2-5/16”

• Coupler Type: Underslung

• Construction: Premium steel with corrosion-resistant finish

Benefits for Your Towing Setup:

• Smoother, safer trailer handling

• Improved steering and braking performance

• Less wear on suspension components

• Ideal for travel trailers, utility trailers, and cargo haulers with underslung couplers

• Provides enhanced confidence on highways, grades, and uneven terrain