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A trailer ball mount must match your receiver, trailer coupler, and towing weight. Choosing the wrong size or drop can leave your trailer uneven or create a safety risk. The Reese Towpower 21536RAK Trailer Hitch Ball Mount Starter Kit offers a pre-attached 2-inch ball, a fixed 2-inch drop, and a 6,000 lb maximum trailer weight rating. This review explains its verified specifications, setup requirements, strengths, and limitations so you can decide whether it fits your towing needs.
Quick Verdict
Verdict: Recommended with caveats
Best For: Truck, SUV, and van owners who have a 2-inch receiver, need a 2-inch trailer ball, and want a ready-to-install towing starter kit.
Bottom Line: The Reese 21536RAK combines a pre-torqued hitch ball, welded steel construction, and included mounting hardware in one package. It is a practical choice for compatible towing setups, but the fixed drop, 600 lb tongue weight limit, and non-locking pin make careful fit checks essential.
| Specification | Detail |
|---|---|
| Brand | Reese Towpower |
| Model | 21536RAK (also listed in the Reese 21536 product family) |
| Product Type | Pre-assembled trailer ball mount starter kit |
| Design | Fixed-height, all-welded ball mount |
| Receiver Compatibility | 2-inch square receiver opening |
| Gross Trailer Weight (GTW) | 6,000 lb maximum |
| Tongue Weight (TW) | 600 lb maximum |
| Drop | 2 inches |
| Rise | 3/4 inch when correctly configured in the rise position |
| Hitch Ball Diameter | 2 inches |
| Ball Shank Diameter | 1 inch |
| Shank Length | 8.25 inches listed for Reese part 21536 |
| Material | All-welded steel |
| Finish | Black powder-coated mount with chrome-finished steel ball |
| Included Components | Ball mount, pre-attached 2-inch ball, 5/8-inch hitch pin, and retaining clip |
| Hitch Pin Diameter | 5/8 inch (0.625 inch) |
| Hitch Lock | Not included |
| Weight | 8.05 lb listed by Reese for part 21536 |
| Testing Standard | Manufacturer states testing to exceed SAE J684 |
| Warranty | Confirm current terms. Reese’s product page contains conflicting one-year and limited-lifetime statements. |
| Best Uses | Compatible utility trailers, small campers, boat trailers, and equipment trailers within all towing limits |
What Is the Reese Towpower 21536RAK Ball Mount Kit?
The Reese Towpower 21536RAK is a loaded trailer ball mount designed for vehicles with a 2-inch square hitch receiver. It combines the ball mount, hitch ball, and securing pin with clip. The ball is already attached and torqued, so you do not need to install it before using the standard drop configuration.
The main benefit is setup convenience. Reese uses an all-welded steel mount with a black powder-coated finish and a 2-inch chrome-finished ball. Its published weight limits are 6,000 lb gross trailer weight and 600 lb tongue weight. Reese also describes Interlock technology for securing the ball to the mount.
This product is a ball mount kit, not a complete vehicle-mounted trailer hitch receiver. Your vehicle must already have a compatible receiver. You also need a correctly sized trailer coupler, working trailer lights, safety chains, and any braking equipment required for your trailer.
Before You Buy: Check four things: your receiver opening must be 2 inches, your trailer coupler must accept a 2-inch ball, the 2-inch drop must suit your trailer height, and your loaded trailer and tongue weights must stay within the lowest-rated component of your towing system. Do not rely on the ball mount’s 6,000 lb rating alone.
Who Should Buy It?
Best For
- Truck, SUV, or van owners with a compatible 2-inch receiver.
- Drivers who tow utility, boat, or small camping trailers that need a 2-inch ball and the supplied drop.
- Buyers who prefer a pre-assembled ball mount with the hitch pin and clip included.
Skip If
- Your trailer requires more than 6,000 lb GTW or 600 lb tongue weight capacity.
- You need a much larger drop or regularly tow trailers with different coupler heights.
- Your receiver is 1-1/4 inches or your trailer needs a different ball diameter.
Detailed Feature Analysis
Build Quality and Steel Construction
The Reese 21536RAK uses an all-welded steel ball mount instead of an adjustable multi-piece assembly. This provides a straightforward design with no height-adjustment bolts to reposition before each trip. The welded construction is one reason this kit suits drivers who use the same trailer setup regularly.
A black powder-coated finish helps protect the steel against moisture and road exposure. The attached 2-inch steel ball has a chrome finish. Both surfaces still need care because scratches, worn plating, and road salt can lead to corrosion over time.
The package also includes a steel hitch pin and retaining clip. These secure the mount inside the receiver but do not lock it against theft. If your vehicle spends long periods parked with the ball mount installed, a compatible locking pin may be useful.
Weight Capacity and Towing Performance
This kit has a published maximum gross trailer weight rating of 6,000 lb and a maximum tongue weight rating of 600 lb. Gross trailer weight includes the trailer and everything loaded onto it. Tongue weight is the downward force that the trailer applies to the hitch ball.
For many conventional bumper-pull trailers, tongue weight commonly falls around 10% to 15% of the loaded trailer weight, although the correct range depends on the trailer design and manufacturer. That means the 600 lb tongue weight limit can become the deciding factor before you reach 6,000 lb of total trailer weight.
For example, a 4,000 lb loaded trailer with 15% tongue weight places about 600 lb on the hitch. A 6,000 lb trailer at the same percentage would place about 900 lb on the hitch, which exceeds this ball mount’s tongue weight rating.
Always check the tow vehicle’s limits, receiver rating, ball mount rating, hitch ball rating, trailer requirements, and actual loaded weights. Your safe towing limit is controlled by the lowest applicable rating, not the highest number printed on one component.
Installation, Drop, and Rise Dimensions
The included mount provides a fixed 2-inch drop. Reese also lists a 3/4-inch rise when the ball mount is configured in the opposite orientation. This gives you two potential height arrangements, but it does not offer the flexibility of a true adjustable hitch.
For the normal drop position, installation is straightforward. You insert the square shank into your vehicle’s 2-inch receiver, align the mounting holes, insert the supplied 5/8-inch hitch pin, and secure the retaining clip.
If you want to use the rise position, the hitch ball must remain upright. This requires correctly relocating and securing the ball according to the manufacturer’s instructions. Do not tow with the hitch ball pointing downward or with a ball nut that has not been tightened to the required specification.
Setup Tips Before First Use
Correct installation starts with checking your trailer height. Follow these steps before towing:
- Park on level ground. Position your tow vehicle and trailer on a firm, flat surface.
- Measure the receiver. Measure from the ground to the top inside edge of the receiver opening.
- Measure the trailer coupler. Level the trailer and measure from the ground to the bottom of the coupler.
- Compare the measurements. If the receiver is higher than the coupler, you generally need a drop. If it is lower, you may need a rise.
- Check the final loaded position. Vehicle suspension compression and trailer loading can change the actual towing height.
- Secure all connections. Check the pin, clip, coupler latch, safety chains, trailer wiring, and any required braking connections.
The goal is to keep the trailer level when connected and loaded for travel. A visibly nose-high or nose-low trailer may indicate that you need a different ball mount height.
Pro Tip: Measure your trailer’s coupler height before ordering. A ball mount that fits your receiver can still be the wrong height for your trailer. After coupling, recheck the trailer’s level position and the hitch pin before your first road trip.
How It Performs in Real Use
The following scenarios explain how the published specifications apply to common towing needs. They are practical fit assessments, not claims of independent road testing.
Towing Utility and Cargo Trailers
For landscaping equipment, building materials, or household loads, a 2-inch ball and 6,000 lb rating can cover many common utility trailer setups. The included pin and pre-attached ball reduce the number of separate parts you need to buy and assemble.
However, a trailer loaded with dense materials can reach its tongue weight limit faster than expected. Check the actual loaded weight rather than judging capacity from trailer size alone.
Hauling Campers and Travel Trailers
Small campers and pop-up trailers may be suitable when their coupler size, loaded weight, tongue weight, and height match this mount. The fixed design works best when you tow the same camper regularly and have already confirmed the correct ball height.
Travel trailers can have significant tongue weights. Some setups may also require a weight distribution system or other towing equipment. This standard ball mount is not a replacement for a dedicated weight distribution hitch.
Towing Boats and Marine Trailers
The steel mount and chrome-finished ball can be used with compatible boat trailers. A pre-assembled kit is convenient if you routinely connect the same boat trailer to your tow vehicle.
Boat ramps introduce extra moisture, especially near saltwater. Rinse exposed metal with fresh water after saltwater use, dry the assembly, and check for damaged coating or rust. Do not assume that the finish makes the mount maintenance-free.
Frequent Hookup and Storage
The standard pin-and-clip arrangement allows you to remove the ball mount when you are not towing. This helps keep the projecting drawbar out of the way and protects the assembly from unnecessary weather exposure.
Store the mount somewhere dry and secure. If you keep it in your vehicle, wrap or secure it so the metal parts do not move around the cargo area during driving.
Compatibility, Safety, and Testing Standards
Reese states that its starter ball mounts are tested to exceed SAE J684 standards. This is a recognized standard covering towing connection equipment. The testing claim supports the manufacturer’s published rating, but it does not mean every vehicle and trailer combination can safely tow 6,000 lb.
Before every trip, inspect the ball mount for cracks, bent metal, deep corrosion, or damage around the welds and pin holes. Confirm that the hitch pin passes completely through the receiver and that its retaining clip is installed.
Check the trailer coupler latch and attach safety chains to the vehicle’s designated hitch attachment points. Make sure trailer lights work and any required braking system is connected. A properly installed ball mount is only one part of a safe towing setup.
Avoid using this 2-inch ball mount with a 1-1/4-inch receiver through an unapproved adapter. Adapters have their own restrictions and may not be rated for towing. Use a ball mount and receiver combination approved for your vehicle and trailer instead.
Reese’s published warranty information for this product family is inconsistent. Its promotional description refers to limited lifetime protection, while its technical listing identifies a limited one-year warranty. Check the written warranty terms for the exact product before relying on a specific coverage period.
Maintenance and Long-Term Care
Keep the receiver, shank, hitch ball, and retaining hardware free from heavy dirt and rust. Check the ball surface for wear and follow the trailer coupler manufacturer’s instructions for suitable lubrication. Avoid applying grease indiscriminately to every component.
If you remove or replace the hitch ball, use the correct hardware and the specified tightening torque. After any modification, confirm that the new ball and its shank are properly rated for the trailer.
Do not use a bent, cracked, heavily corroded, or otherwise damaged ball mount. Replace unsafe components rather than attempting an unapproved repair.
Pros and Cons
Pros
- Pre-attached and factory-torqued 2-inch ball simplifies initial setup.
- 6,000 lb GTW and 600 lb tongue weight ratings suit many compatible towing tasks.
- Includes a ball mount, trailer ball, 5/8-inch hitch pin, and retaining clip.
- All-welded steel body with a protective black powder-coated finish.
- Manufacturer states testing to exceed SAE J684 standards.
Cons
- Fixed drop and rise limit compatibility with different trailer heights.
- Changing the supplied ball or configuring the rise position requires correct tools and torque procedures.
- Included hitch pin is not locking, and the published warranty terms need confirmation.
Is It Worth the Price?
The Reese Towpower 21536RAK is worth considering if you need a basic fixed-height towing setup and want to avoid buying the main components separately. Its ready-mounted 2-inch ball is especially useful when you do not have the tools needed to install and torque a loose hitch ball.
The value comes from the complete package and straightforward design rather than height adjustment or premium accessories. You receive the parts needed to connect the ball mount to an existing compatible receiver, but you do not get a locking pin or an adjustable drop mechanism.
If you tow one trailer regularly and the fixed height works for your vehicle, this kit can be a practical purchase. If you switch between trailers with different coupler heights or ball sizes, investing in an adjustable alternative may make more sense.
How It Compares to Alternatives
The Reese 21536RAK is a fixed-height starter kit. Adjustable ball mounts provide more height settings, while unassembled mounts offer greater freedom to select your own ball and mounting hardware.
- Compared to Adjustable Drop Hitches: An adjustable model is more useful if you tow several trailers with different heights. The Reese kit is simpler when one fixed position meets your needs.
- Compared to Unassembled Ball Mount Kits: A separate ball mount and hitch ball let you choose individual components. However, you must confirm the ball shank size, weight ratings, and tightening requirements yourself.
- Compared to Higher-Capacity Ball Mounts: Heavy-duty alternatives may provide greater gross trailer and tongue weight ratings. Choose them when your towing setup requires additional capacity, rather than assuming that a 2-inch receiver makes this Reese kit suitable for every load.
The Reese kit makes the most sense for a compatible 2-inch receiver and 2-inch coupler combination when you value convenient installation over adjustability.
Frequently Asked Questions
Is the Reese 21536RAK trailer ball removable?
Yes. The supplied 2-inch ball is secured to the mount with a nut and related hardware. You can replace it with a compatible ball, but you must verify the replacement ball’s shank dimensions, weight rating, and required tightening torque.
Will this ball mount fit a 1-1/4-inch receiver?
No. The Reese 21536RAK is designed for a 2-inch square receiver. Do not assume a receiver adapter makes it safe for towing. Check your vehicle’s approved towing equipment and choose a correctly sized, rated setup.
Can I flip the ball mount for a rise instead of a drop?
Reese lists a 3/4-inch rise configuration in addition to the 2-inch drop. The trailer ball must remain upright, so changing orientation requires proper ball installation and torque. Follow the manufacturer’s instructions before towing in the rise position.
Can this Reese ball mount be used with a weight distribution hitch?
No. This is a standard fixed ball mount, not a weight distribution hitch head. If your trailer setup requires weight distribution equipment, choose a compatible system with the proper ratings and installation components.
What size hitch pin comes with the kit?
The kit includes a 5/8-inch diameter hitch pin and retaining clip for a compatible 2-inch receiver. The pin secures the mount in place but does not provide a keyed theft lock.
How do I know if a 2-inch drop is correct?
Measure the height of your receiver opening and your level trailer coupler on flat ground. Compare the measurements to find the required drop or rise. Confirm the final trailer position with the vehicle and trailer loaded for travel.
Is the included hitch pin locking?
No. The included pin uses a removable retaining clip. If you want theft protection, check for a compatible 5/8-inch locking hitch pin that fits your receiver and meets the required towing specifications.
Can I tow a 6,000 lb trailer with this kit?
Only if your entire towing setup supports that load and the trailer’s tongue weight stays at or below 600 lb. Your vehicle, receiver, hitch ball, and other components must also meet the required ratings. A 6,000 lb trailer with 15% tongue weight would exceed this kit’s tongue weight limit.
The Bottom Line
The Reese Towpower 21536RAK is a practical towing starter kit for drivers who need a pre-assembled 2-inch ball mount with a fixed 2-inch drop. Its all-welded steel construction, included hardware, and 6,000 lb GTW rating are useful strengths, but you should choose another setup if you need greater tongue weight capacity, a different receiver size, or more height adjustment. Confirm your towing limits and fit before purchasing.
Ready to Tow?
Check current product details and pricing for the Reese Towpower 21536RAK before you decide.
