CURT MANUFACTURING, LLC. part description

CURT Switch Ball trailer balls are a breakthrough in trailer ball technology. As a result of CURT innovation and engineering genius, Switch Balls offer the ultimate in convenience and reliability for a variety of light-duty and medium-duty towing applications. Essentially, a CURT Switch Ball is a trailer ball shank with a removable head. With its exclusive J-groove design, the Switch Ball trailer ball allows different heads or ball sizes to be places on the shank for accommodating different coupler sizes. This means there is no need to switch between ball mounts or even to own a second ball mount to fit an additional trailer. When you need to make the switch, simply twist the Switch Ball head, lift it off and twist on another. The J-groove ensures a solid hold on your trailer, while still allowing for easy removal of the trailer ball without tools or pins.This CURT Switch Ball trailer ball head features a 1 7/8" ball diameter and a 1 1/8" neck hole diameter. It is constructed from premium-grade steel for optimum strength and has a bright nickel-chrome finish for lasting rust resistance. It is rated to tow up to 8,000 lbs. gross trailer weight and is tested to SAE J684 standards for safety.


  • Fits 1 7/8" couplers and accepts up to 8,000 lbs. GTW
  • Exclusive 'J' groove design for secure attachment to the shank
  • No tools, coins or pins required for trailer ball installation
  • Shank bears the weight, freeing the coupler from friction and binding
  • Constructed from high-strength steel
  • Protected by a premium grade, nickel chrome-plated finish
  • Independently tested to SAE J684 standards and proven safe
  • U.S. patent# 5,169,168; Canadian patent# 1,325,445

Product Description

Replacement 1-7/8" Switch Ball Trailer Ball (Fits 1-1/8" Neck)

Application Summary

CURT 42780 Replacement Switch Ball 1-7/8-Inch Chrome Steel Trailer Hitch Ball, 8,000 lbs. GTW, 1-1/8-Inch Neck Hole

U.S. patent# 5,169,168; Canadian patent# 1,325,445

Product Attributes

BALL DIAMETER 1-7/8 IN
Box Height In Inches - Xa 2
Box Length In Inches - Xa 7
Box Width In Inches - Xa 4
Capacity 8,000 LB
Class Id 0
Finish - Xa Chrome
Hole Size 1.125
Item Class - Xa OBS
Item Height - Xa 0.000
Item Length - Xa 0.000
Item Width - Xa 0.000
Parcel Allowed - Xa Yes
Product Weight - Xa 0.000
Rate Class - Xa 70.0
Retail Height - Xa 2.000
Retail Length - Xa 2.000
Retail Width - Xa 2.000
Shipping Weight - Xa 0.400
Tariff 301 - Xa Yes
Warranty Limited Lifetime Warranty (One-Year Finish, One-Year Parts)

Additional Information

Country of Origin (Primary) CN
Harmonized Tariff Code (Schedule B) 8708998180
Harmonized Tariff Code (HTS) 8708998180
NAFTA Preference Criterion Code B
Refurbished Part N
Remanufactured Part N
Warranty Special Limited Lifetime Warranty (One-Year Finish, One-Year Parts)
Warranty Special UOM TX
UPC 00612314780037

Curt®, a Lippert brand, is a leading manufacturer and supplier of a full line of towing products, including heavy-duty equipment. It also offers fifth wheel, gooseneck, weight distribution hitches, ball mounts, trailer balls, electrical components, bike racks, cargo carriers, and other towing accessories. Headquartered in Eau Claire, Wisconsin, Curt Manufacturing, LLC. has come a long way since it was founded as a trailer ball distribution business in 1993. Two years after its founding, it began manufacturing its own first custom-fit receiver hitch, which was soon followed by countless more. Today, Curt remains the FIRST Name in Towing Products® with over a thousand trailer hitch designs for everything, from vans and passenger cars to SUVs and full-size pickups.

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