HITCH BUYING GUIDE

CHOOSING THE CORRECT HITCH CLASS
MADE IN THE USA
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TRAILER HITCHES
Mounted to the vehicle, the trailer hitch is the primary device that allows a vehicle to tow.  Choosing the correct type of trailer hitch requires knowledge of the gross trailer weight and tongue weight of the trailer being pulled.  the lowest rating of any component of your towing system should never be exceeded.
1.25 INCH  CLASS 1 & 2  2 INCH  CLASS 3 & 4
gtw UP TO 3,500 LBS. CLASS 1 & 2 gtw 3,500 TO 10,000 LBS. CLASS 3 & 4
TW UP TO 350 LBS. TW 350 TO 1,000 LBS.
WD NOT APPLICABLE WD UP TO 12,000 LBS.
WDTW NOT APPLICABLE WDTW UP TO 1,200 LBS.
2 INCH CLASS 5
XTRA DUTY
2.5 INCH CLASS 5
COMMERCIAL DUTY
gtw 16,000 TO 17,000 LBS. CLASS 5 XD gtw 18,000 TO 20,000 LBS. CLASS 5 CD
TW 2,400 TO 2,550 LBS. TW UP TO 2,700 LBS.
WD UP TO 17,000 LBS. WD 18,000 TO 20,000 LBS.
WDTW UP TO 2,550 LBS. WDTW UP TO 2,700 LBS.
GROSS TRAILER WEIGHT (GTW) WEIGHT CARRYING CAPACITY (WC)
The gross trailer weight is the total weight of the trailer and its cargo (for example, gross trailer weight = boat+trailer+cooler+fishing gear).  It is important to know the GTW to ensure safe towing.  It can be measured by putting the fully loaded trailer on a vehicle scale. The weight carrying capacity is the measure of the total weight a trailer can safel pull without adding a weight distribution system.  The total weight of the trailer should never exceed the weight capacity rating of the trailer hitch, ball mount or trailer ball.  Always use the lowest weight capacity rating of your towing system.
GTW IMAGE WC IMAGE
WEIGHT DISTRIBUTION CAPACITY (WD) TONGUE WEIGHT (TW)
The weight distribution capacity is the measure of the total weight a trailer hitch can safely pull with a weight distribution system installed.  The use of a weight distribution hitch and sway control balances the weight of the trailer, allowing for better sterring, braking and level towing.   Tongue weight is the downward force that is exerted on the trailer ball by the coupler.  the tongue weight will vary depending on where the load is positioned relative to the trailer axle(s).  Ideally, a trailer's tongue weight should be about 10% of its total weight.  To measure the tongue weight, use a commercial scale or a bathroom scale with the coupler at level towing height.  When using a bathroom sclae, use the method shown below and multiply by three.
WD IMAGE TW IMAGE
TYPES OF TRAILERS BY HITCH CLASS
Each hitch class is generally qualified for towing different types of trailers, based on receiver tube size and weight capacity.  Not all hitches wihtin a given class are capable of towing the same trailers.  A trailer hitch is always limited to its own specified wweight capacity and that of the tow vehicle and other hitch components.   
selecting a hitch class
VEHICLE TOWING CAPACITY
The table below provides examples of approximage towing capacities for various vehcile types.  The figures given are representative only and do not reflect actual vehicle capacities.  Always consult the vehicle owner's manual before towing. 
towing capacity
WEIGHT CAPACITY GUIDE
Use this table as a guide to help determine the weight of a trailer, based on its type and length.  Knowing the weight of the trailer is essential for safe towing.  The trailer weights provided in this table do not include any added cargo and are only meant to be representative.  The do not reflect the weights of any actual trailers. 
weight capacity
WARRANTY INFORMATION
CURT Manufacturing, LLC (CURT) warrants to the original purchaser (Purchaser), its products to be free from defect under normal use and service, ordinary wear and tear expected, for the warranty period stated below, from the date of the original retail purchase, but subject to the limitations as set forth in this attachment

 

CHOOSING THE CORRECT HITCH WIRING        Buy Now »
PLUGS & SOCKETS WIRING GUIDE
There are several different formats used for connecting trailer wiring and each offers slightly different electrical functions.  
'Socket' is used to refer to the vehicle side of the connection, and 'plug' is used to refer to the trailer side.  While most plugs and sockets come with standard color-coded wires, the color below may not reflect those found on all vehicles and trailers. 
plugs & sockets 

ELECTRICAL ADAPTOR SELECTION CHART
Often times, an electrical adapter is needed to connect a mismatched trailer plug and vehicle socket.  
Use this chart to identify which CURT adapter is needed, based on the plug and socket type. 

adapter chart 

OPTIONAL HITCH ADAPTORS

BASKETS      Buy Now »

• Frees up space insdie the vehicle for passengers and other cargo
• Folding design allows carrier to be tilted up when not in use
• Easy, bolt-together assembly 
BASKETS 1
• Frees up space insdie ther vehcile for passengers and other cargo
• Folding design allows carrier to be tilted up when not in use
• Built-in reflectors add visibility for increased safety
• Angled shank elevates carrier for more ground clearance
• Heady-duty, tubular steel construction
• 6" tall sides for added security 
 CARGO MANAGEMENT2

BIKE RACKS        Buy Now »

• Tilts away for rear vehicle access
• Adjustable arms for various bike heights and styles
• Sides fold up when not in use for compact storage
• Anti-wobble shank
• Durable powder coat finish
• Do not install on a trailer or other towed vehicle 
bikes 1
• Clamps on to 2" x 2" ball mount shank
• Adjustable rubber cradles will not scratch bike frame
• Easily accessible release handle
• Support straps included

• Durable powder coat finish
• Do not install on a trailer or other towed vehicle 
bikes 2
• Tilts away for rear vehicle access
• Adjustable rubber cradles will not scratch bike frame
• Arms fold down when not in use
• Support straps included

• Towable shank bike racks allow you to tow a trailer while using the bike rack
• Anti-wobble shank
• Durable powder coat finish
• Do not install on a trailer or other towed vehicle 
bikes 3
• Tilts away for rear vehicle access
• Adjustable rubber cradles will not scratch bike frame
• Arms fold down when not in use
• Tapered arms for easy mounting of smaller bikes

• Built-in reflectors
• Anti-wobble shank
• Durable powder coat finish
• Do not install on a trailer or other towed vehicle 
bikes 4
• Tilts away for rear vehicle access
• Bolts onto any ball mount or step bumper with a 3/4" hole (ball mount not included)
• Accepts up to two bikes
• Coated arms will not scratch bike frame

• Durable powder coat finish
• Do not install on a trailer or other towed vehicle 
BIKE RACKS 5
BALL MOUNTS        Buy Now »
ball mounts trailer balls

The ball mount is part of the hitch system that is inserted into the receiver tube opening of a trailer hitch and is secured with a hitch pin & clip or a lock.  Its primary function is to provide a mounting platform for a trailer ball.  A ball mount may also be used to help level a trailer by providing a certain amount of drop or rise.  Ball mounts come in various styles and weight capacities. 

The trailer ball is the immediate connection point between the tow vehicle and trailerd.  Using a threaded shank and nut, the trailer ball bolts onto the ball mount platform and provides a place on which the trailer coupler rests and latches.  The most important factor in selecting the right trailer ball is the trailer ball's gross trailer weight rating.  The total weight of the trailer and its cargo must not exceed this amount.  Also, the ball diameter must match the size of the coupler, and teh trailer ball shank must not be more than 1/16" smaller than the diameter of the mounting hole.  Before towing, a trailer ball should be checked for proper torquing.

HOW TO DETERMINE BALL MOUNT DROP RISE
When selecting a ball mount, it is important to determine the amount of drop or rise needed for level towing.  The drop or rise refers to the difference between the trailer coupler height and hitch height.  To find this difference, take the distance from the ground to the top of the inside of the receiver tube opening (A).  Subtract it from the distance from the ground to the bottom of the coupler (B).  The coupler height (B) minus the hitch height (A) equals the drop or rise (C).  If (C) is a negative number, this indicates the amount of the drop needed in a ball mount.  If it is a positive number, it indicates the amounf of rise.
drop & rise
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