TOPTOW 63803 RV Bumper Hitch Receiver 2 in Adapter - Fits 4x4 Bumpers

In this review the TOPTOW 63803 RV bumper hitch receiver is presented as a simple, purpose-driven adapter that converts a bare 4 in x 4 in continuous steel trailer bumper into a 2 in receiver. It is best for RV owners who want a low-cost, rugged mounting point for a bike rack or cargo carrier and are not using it for towing trailers. The adapter's primary appeal is straightforward: heavy steel construction with a black powder coat that provides a reliable 350 lb tongue weight capacity for auxiliary carriers.

Key Features

• 2 in receiver opening: Accepts most bike racks and cargo carriers with a 2 in shank so accessories mount without adapters.
• Fits 4 in x 4 in bumpers: Designed to clamp to continuous steel bumpers commonly found on travel trailers for easy placement.
• 350 lb tongue weight: Provides adequate capacity for a loaded bike rack or rear cargo carrier when used as intended.
• Durable construction: Heavy duty steel with robotic welds gives a strong, solid feel and reduces flex under load.
• Corrosion resistance: Black powder coat finish helps resist rain, dust, snow and road salt for longer life outdoors.
• Straightforward install: Can be mounted right-side-up or upside-down and bolts clamp to the bumper for a simple fit.

Who It's For

This adapter is for RV owners who need an occasional, secure mounting point for a bike rack or cargo carrier and do not intend to tow trailers with it. It suits those who value a solid steel build and a discreet, low-profile installation on a 4 in x 4 in continuous steel bumper.

Those who need a device for trailer towing, heavy hitching, or who have nonstandard bumpers should look elsewhere; the product is explicitly not intended for RV level trailer towing and requires verifying bumper dimensions and bolt compatibility before purchase.

Pros & Cons

Pros

• Sturdy heavy duty steel build with robotic welds that feel robust and secure.
• Useful 2 in x 2 in receiver opening that fits most standard bike racks and carriers.
• Powder coat finish improves corrosion resistance for long term outdoor use.
• Easy to install on compatible 4 in x 4 in bumpers and can be mounted upside down for clearance.

Cons

• Not intended for towing trailers; should not be used for RV-level trailer towing tasks.
• Some users report mixed experiences with bolt strength and fit on certain bumpers, so verify compatibility and tighten bolts carefully.

Specifications

Brand	TOPTOW
Receiver opening	2 in x 2 in
Fits bumper size	4 in x 4 in continuous steel bumper
Tongue weight capacity	350 lb
Finish	Black powder coat
Construction	Heavy duty steel with robotic welds

Our Verdict

The TOPTOW 63803 is a practical, well built bumper receiver adapter for RV owners who need an extra mounting point for a bike rack or cargo carrier without towing. It delivers good build quality, corrosion resistance and a useful 350 lb tongue weight capacity, making it a solid value for compatible 4 in x 4 in steel bumpers when installed and tightened correctly.

Frequently Asked Questions

Can this be used for towing a trailer?
No. This accessory is not intended for RV-level trailer towing and should not be used to tow trailers.

What size hitch pin is required?
A 5/8 in hitch pin or hitch lock is required but is not included with the adapter.

Will it fit my bumper?
It fits continuous steel bumpers that are 4 in tall and 4 in deep; check bumper shape and mount points and tighten bolts securely.