CURT MANUFACTURING, LLC. part description

With any towing setup, there is always the need for a few additional items. Though your trailer hitch and ball mount may be tough enough to haul that heavy load, they cannot properly tow without a few supporting players. Towing accessories are a practical addition to your rig that add the finishing touches and take your towing experience to a whole new level. With the right accessories, the difference is a little like cruising the Grand Canyon in a deluxe RV as opposed to camping out in grandma's backyard. For protecting your trailer ball when not in use, the CURT rubber trailer ball cover is a perfect fit. This cover is designed to fit a 2 5/16" diameter trailer ball (trailer ball and ball mount not included). You never know what obstacles the road before you might bring. The key to overcoming them is to be prepared. From proper safety precautions to quality hitch maintenance, you can count on CURT to have the products you need to come prepared and always Bring It.


  • Protects 1 1/4" x 1 1/4" receiver tube opening when not in use
  • Adds a clean, finished look and keeps debris out
  • Constructed from high-strength steel
  • Protected by a durable chrome-plated finish
  • Securely mounts using a pin and clip (not included)

Product Description

Trailer Ball Cover (Fits 2-5/16" Balls, Black Rubber, Packaged)

Application Summary

CURT 21811 Black Rubber Trailer Hitch Ball Cover, 2-5/16-Inch Diameter

Trailer Ball Cover (Fits 2-5/16" Balls, Black Rubber, Packaged)

covers grease tow rv adventurer mount two tethered towing balls outside rack hitches bag handy 2 5/16 inch messy all unique 2-5/16" parts 5/16hitch chrome universal small ram 1 7/8 just add mud mirror hand

Product Attributes

BALL DIAMETER 2-5/16 IN
Box Height In Inches - Xa 2
Box Length In Inches - Xa 7
Box Width In Inches - Xa 4
Class Id 0
Color Black
Finish - Xa BLACK RUBBER
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 7.000
Retail Width - Xa 2.500
Shipping Weight - Xa 0.150
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) 4016996050
Harmonized Tariff Code (HTS) 4016996050
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 00612314218110

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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