What is Diameter of Kuat Hitch Lock part # HL1
Updated 12/30/2025 | Published 12/26/2025 >
Question:
Hello, I’m looking for a hitch lock for a bike rack with a pin diameter of 3/8”. I see the Kuat lock HL1 stating it has a 3/8” diameter. Can you confirm that the pin is actually 3/8” and is there any other locks you carry similar to it?
asked by: Joel R
Expert Reply:
Hey Joel, I can confirm for you that the diameter of the Kuat Hitch Lock part # HL1 is 3/8 inch. This is not a very common diameter pin lock so this would be your best and only option.

Brian S.
12/30/2025
I used this with a Kuat NV 2.0 bike rack that has the kuat 1-1/4" hitch tube. This pin, along with Kuat's 2" adapter block, allows me to use their 1.25" tube in a 2" receiver. This combination causes the pin hole in the 2" receiver to be slightly off center so that only a 3/8' pin will fit thru, rather than a 5/8"pin. I also use the bike rack on another car with a 1.25" receiver. On that car, I use Kuat's 5/8" lock pin. I had both pins keyed with the same code so I could use only one set of keys as I move the rack from one car to the other.
Product Page this Question was Asked From
Hitch Lock for Kuat Bike Racks - 1-1/4" Hitches
- Trailer Hitch Lock
- Rack Specific Locks
- Keyed Unique
- Stainless Steel
- Bent Pin
- For Kuat Racks
- 3-1/2 Inch Span
- Kuat
more information >
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Daniel S.
12/30/2025
I bought one of these Kuat locks and I’m pleased with it. I use it with a Kuat rack and had to buy it because I bought the rack used and it didn’t have a lock.