--- title: "2 5/16 trailer hitch lock — Niche Verdict: Worth a look (56/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/automotive/2-5-16-trailer-hitch-lock" last_updated: "2026-07-09T22:33:01.459Z" locale: en meta: description: "2 5/16 trailer hitch lock shows a fragmented shelf (top 5 take 37% of clicks), but a small market ($407K/yr) keeps it on the watch list." "og:description": "2 5/16 trailer hitch lock shows a fragmented shelf (top 5 take 37% of clicks), but a small market ($407K/yr) keeps it on the watch list." "og:title": "2 5/16 trailer hitch lock — Niche Verdict: Worth a look (56/100) | Amazon United States - Flapen" --- Back to Flapen home # **2 5/16 trailer hitch lock** **Worth a look****56/100 ** 2 5/16 trailer hitch lock shows a fragmented shelf (top 5 take 37% of clicks), but a small market ($407K/yr) keeps it on the watch list. **Market/yr** **$407K** **Growth (1y)** **+196.0%** **Products** **54** **Brands** **29** was 23 a year ago **Sellers** **150** **Price range** **$10.06–$290.70** **Returns** **3.3%** **Rating** **4.5★** **Worth a look** Scored 56/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **20** ×0.30 Growth **76** ×0.30 Competition **77** ×0.20 Quality gap **40** ×0.10 Returns **73** ×0.10 ## **Demand** Weekly Amazon search volume, last 104 weeks — +196.0% year over year. 3K1KSpike '25Spike '26Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26 ## **Seasonality** Monthly demand index across the year — 1.00 is average. JFMAMJJASOND Peak months: Apr · busiest ÷ quietest = 2.0× ## **Competition** - Master Lock21% - Rhino USA13% - RETRUE10% - NUOVEPE8% - BVLLVT7% - METOWARE6% - Other (23 brands)33% Clicks spread well past the top 5 (37% combined) — an open shelf where new products get seen. 29 brands and 150 sellers compete here. **Brands** **29 **▲rising was 23 a year ago **Sellers** **150** **Top 5 brand share** **60%** #ProductBrandPriceRatingReviewsClick shareTrend 1 ![Rhino USA Trailer Hitch Lock Kit (for 2-5/16 Trailers) Heavy Duty Anti Theft Trailer Coupler Locks for RV Camper Trailer Boat Caravan - Reinforced Solid Steel Tow Lock for Trailer Tongue](https://m.media-amazon.com/images/I/414y+x9+XKL.jpg) [**Rhino USA Trailer Hitch Lock Kit (for 2-5/16 Trailers) Heavy Duty Anti Theft Trailer Coupler Locks for RV Camper Trailer Boat Caravan - Reinforced Solid Steel Tow Lock for Trailer Tongue**](https://www.amazon.com/dp/B09J9T8NT2) Rhino USA$53.814.4★2,32810%▲rising 2 ![Master Lock Black Universal Size Trailer Hitch Lock Trailer Coupler Lock for Securing RVs Horse Trailers Tool Trailers and More 379ATPY](https://m.media-amazon.com/images/I/41AFmKkBkuL.jpg) [**Master Lock Black Universal Size Trailer Hitch Lock Trailer Coupler Lock for Securing RVs Horse Trailers Tool Trailers and More 379ATPY**](https://www.amazon.com/dp/B000L9QRE8) Master Lock$36.934.6★5,9479%▼falling 3 ![BVLLVT Heavy Duty Trailer Hitch Lock for 2 5/16 Ball Coupler - Adjustable Locking Mechanism Design - Anti-Theft Solid Steel Coupler Lock for RV Boat Camper Trailer](https://m.media-amazon.com/images/I/31l1W1yb1HL.jpg) [**BVLLVT Heavy Duty Trailer Hitch Lock for 2 5/16 Ball Coupler - Adjustable Locking Mechanism Design - Anti-Theft Solid Steel Coupler Lock for RV Boat Camper Trailer**](https://www.amazon.com/dp/B0F5HTHQFH) BVLLVT$80.494.4★1047%▲rising 4 ![Master Lock Trailer Coupler Lock Universal Size Fits 1-7/8 2 and 2-5/16 389DAT](https://m.media-amazon.com/images/I/41tppByFngL.jpg) [**Master Lock Trailer Coupler Lock Universal Size Fits 1-7/8 2 and 2-5/16 389DAT**](https://www.amazon.com/dp/B01MYCT0LG) Master Lock$32.944.7★17,4286%▼falling 5 ![METOWARE Universal Trailer Hitch Locks Adjustable Heavy-Duty Trailer Coupler Ball Locks Fit 1-7/8 Inch 2 Inch 2-5/16 Inch Couplers with 2 Keys](https://m.media-amazon.com/images/I/41RnLJ62OcL.jpg) [**METOWARE Universal Trailer Hitch Locks Adjustable Heavy-Duty Trailer Coupler Ball Locks Fit 1-7/8 Inch 2 Inch 2-5/16 Inch Couplers with 2 Keys**](https://www.amazon.com/dp/B0CZ3LWNJJ) METOWARE$34.734.7★4335%▲rising 6 ![NUOVEPE Trailer Lock Fits 2 5/16 Inch Couplers Secures Safety Chains Anti-Theft Ball Hitch Lock Pry-Resistant & Heavy-Duty Trailer Hitch Locks for RV | Cargo | Camper | Dump Trailer (Blue)](https://m.media-amazon.com/images/I/41EGYeQ4Y-L.jpg) [**NUOVEPE Trailer Lock Fits 2 5/16 Inch Couplers Secures Safety Chains Anti-Theft Ball Hitch Lock Pry-Resistant & Heavy-Duty Trailer Hitch Locks for RV | Cargo | Camper | Dump Trailer (Blue)**](https://www.amazon.com/dp/B0DFH5NMCT) NUOVEPE$110.174.7★1715%▲rising 7 ![Kaowuzz Trailer Lock Heavy Duty Trailer Ball Lock Fits 2 5/16-Inch Couplers Anti-Theft Anti-Smashing Secures Safety Chains Solid Steel Towing Hitch Accessories for RV Cargo Boat (with Handle)](https://m.media-amazon.com/images/I/41T2p15YV2L.jpg) [**Kaowuzz Trailer Lock Heavy Duty Trailer Ball Lock Fits 2 5/16-Inch Couplers Anti-Theft Anti-Smashing Secures Safety Chains Solid Steel Towing Hitch Accessories for RV Cargo Boat (with Handle)**](https://www.amazon.com/dp/B0FQJC4ZVB) Kaowuzz$60.204.6★394%▲rising 8 ![2 5/16Inch-Trailer-Hitch-Locks-Kit Heavy Duty Anti Theft Trailer Tongue Lock Reinforced Solid Steel Weatherproof Tow Coupler Lock Trailer Locks Ball Hitch for RV Camper Cargo Boat Caravan](https://m.media-amazon.com/images/I/41aI7AhJGsL.jpg) [**2 5/16Inch-Trailer-Hitch-Locks-Kit Heavy Duty Anti Theft Trailer Tongue Lock Reinforced Solid Steel Weatherproof Tow Coupler Lock Trailer Locks Ball Hitch for RV Camper Cargo Boat Caravan**](https://www.amazon.com/dp/B0FPWPZ8YL) NUOVEPE$41.044.6★853%▲rising 9 ![RETRUE Heavy-Duty Universal Coupler Lock Trailer Locks Ball Hitch Trailer Hitch Lock Adjustable Security Steel Fits 1-7/8 Inch 2 Inch 2-5/16 Inch Couplers Grey & Silver](https://m.media-amazon.com/images/I/31aruVNnGUL.jpg) [**RETRUE Heavy-Duty Universal Coupler Lock Trailer Locks Ball Hitch Trailer Hitch Lock Adjustable Security Steel Fits 1-7/8 Inch 2 Inch 2-5/16 Inch Couplers Grey & Silver**](https://www.amazon.com/dp/B09XQB7C7K) RETRUE$35.094.6★9613%▲rising 10 ![Proven Industries Model 2516 Heavy-Duty Trailer Coupler Lock for 2 5/16 Couplers RV & Trailer Anti-Theft Lock Made in USA](https://m.media-amazon.com/images/I/31uaU0YmCqL.jpg) [**Proven Industries Model 2516 Heavy-Duty Trailer Coupler Lock for 2 5/16 Couplers RV & Trailer Anti-Theft Lock Made in USA**](https://www.amazon.com/dp/B0G31418YZ) Proven Industries$270.724.7★1,7473%▲rising 11 ![RETRUE Universal Coupler Lock Trailer Locks Ball Hitch Trailer Hitch Lock Adjustable Security Heavy-Duty Steel Fits 1-7/8 Inch 2 Inch 2-5/16 Inch Couplers Yellow](https://m.media-amazon.com/images/I/41Bv2etW5uL.jpg) [**RETRUE Universal Coupler Lock Trailer Locks Ball Hitch Trailer Hitch Lock Adjustable Security Heavy-Duty Steel Fits 1-7/8 Inch 2 Inch 2-5/16 Inch Couplers Yellow**](https://www.amazon.com/dp/B09XQJKJH5) RETRUE$12.834.5★3,6473%—flat 12 ![Rhino USA Trailer Hitch Lock Kit (for 2 Trailers) Heavy Duty Anti Theft Trailer Coupler Locks for RV Camper Trailer Boat Caravan - Reinforced Solid Steel Tow Lock for Trailer Tongue](https://m.media-amazon.com/images/I/51nXpZiUBDL.jpg) [**Rhino USA Trailer Hitch Lock Kit (for 2 Trailers) Heavy Duty Anti Theft Trailer Coupler Locks for RV Camper Trailer Boat Caravan - Reinforced Solid Steel Tow Lock for Trailer Tongue**](https://www.amazon.com/dp/B098W45GM2) Rhino USA$53.214.4★2,3282%▲rising 13 ![REESE Towpower 72783 Coupler Lock Adjustable Storage Security Heavy-Duty Steel Yellow and Chrome ( Universal Fit)](https://m.media-amazon.com/images/I/41UPfTq+QvL.jpg) [**REESE Towpower 72783 Coupler Lock Adjustable Storage Security Heavy-Duty Steel Yellow and Chrome ( Universal Fit)**](https://www.amazon.com/dp/B0008FUH46) REESE$20.794.6★18,4862%▼falling 14 ![NiwNiw 2-5/16 Heavy Duty Trailer Hitch Lock - Ball Coupler&Safety Chains Anti-Theft Travel RV/Pop-Up Camper/Boat/Truck/Motorcycle/ATV/UTV/Flatbed/Cargo/Dump/Utility Trailer Tongue Lock Secure Design](https://m.media-amazon.com/images/I/41HxwG3XnUL.jpg) [**NiwNiw 2-5/16 Heavy Duty Trailer Hitch Lock - Ball Coupler&Safety Chains Anti-Theft Travel RV/Pop-Up Camper/Boat/Truck/Motorcycle/ATV/UTV/Flatbed/Cargo/Dump/Utility Trailer Tongue Lock Secure Design**](https://www.amazon.com/dp/B0D9M6ZW66) NiwNiw$103.004.7★2492%—flat 15 ![RETRUE Heavy Duty Trailer Lock Fits 2 5/16-Inch Couplers Ball Coupler&Safety Chains Anti-Theft Trailer Hitch Locks for RV Cargo Boat Dump Trailer (Black)](https://m.media-amazon.com/images/I/31HsUX0kyIL.jpg) [**RETRUE Heavy Duty Trailer Lock Fits 2 5/16-Inch Couplers Ball Coupler&Safety Chains Anti-Theft Trailer Hitch Locks for RV Cargo Boat Dump Trailer (Black)**](https://www.amazon.com/dp/B0FCXVZMVW) RETRUE$80.865.0★82%▲rising **~~Showing 15 of 54 — show all ~~** ## **Product shelf** All 54 tracked products in this niche. Top sellersNewestTrending [![Rhino USA Trailer Hitch Lock Kit (for 2-5/16 Trailers) Heavy Duty Anti Theft Trailer Coupler Locks for RV Camper Trailer Boat Caravan - Reinforced Solid Steel Tow Lock for Trailer Tongue](https://m.media-amazon.com/images/I/414y+x9+XKL.jpg)**Rhino USA Trailer Hitch Lock Kit (for 2-5/16 Trailers) Heavy Duty Anti Theft Trailer Coupler Locks for RV Camper Trailer Boat Caravan - Reinforced Solid Steel Tow Lock for Trailer Tongue** Rhino USA**$53.81**4.4★2,328 reviews](https://www.amazon.com/dp/B09J9T8NT2) [![Master Lock Black Universal Size Trailer Hitch Lock Trailer Coupler Lock for Securing RVs Horse Trailers Tool Trailers and More 379ATPY](https://m.media-amazon.com/images/I/41AFmKkBkuL.jpg)**Master Lock Black Universal Size Trailer Hitch Lock Trailer Coupler Lock for Securing RVs Horse Trailers Tool Trailers and More 379ATPY** Master Lock**$36.93**4.6★5,947 reviews](https://www.amazon.com/dp/B000L9QRE8) [![BVLLVT Heavy Duty Trailer Hitch Lock for 2 5/16 Ball Coupler - Adjustable Locking Mechanism Design - Anti-Theft Solid Steel Coupler Lock for RV Boat Camper Trailer](https://m.media-amazon.com/images/I/31l1W1yb1HL.jpg)**BVLLVT Heavy Duty Trailer Hitch Lock for 2 5/16 Ball Coupler - Adjustable Locking Mechanism Design - Anti-Theft Solid Steel Coupler Lock for RV Boat Camper Trailer** BVLLVT**$80.49**4.4★104 reviews](https://www.amazon.com/dp/B0F5HTHQFH) [![Master Lock Trailer Coupler Lock Universal Size Fits 1-7/8 2 and 2-5/16 389DAT](https://m.media-amazon.com/images/I/41tppByFngL.jpg)**Master Lock Trailer Coupler Lock Universal Size Fits 1-7/8 2 and 2-5/16 389DAT** Master Lock**$32.94**4.7★17,428 reviews](https://www.amazon.com/dp/B01MYCT0LG) [![METOWARE Universal Trailer Hitch Locks Adjustable Heavy-Duty Trailer Coupler Ball Locks Fit 1-7/8 Inch 2 Inch 2-5/16 Inch Couplers with 2 Keys](https://m.media-amazon.com/images/I/41RnLJ62OcL.jpg)**METOWARE Universal Trailer Hitch Locks Adjustable Heavy-Duty Trailer Coupler Ball Locks Fit 1-7/8 Inch 2 Inch 2-5/16 Inch Couplers with 2 Keys** METOWARE**$34.73**4.7★433 reviews](https://www.amazon.com/dp/B0CZ3LWNJJ) [![NUOVEPE Trailer Lock Fits 2 5/16 Inch Couplers Secures Safety Chains Anti-Theft Ball Hitch Lock Pry-Resistant & Heavy-Duty Trailer Hitch Locks for RV | Cargo | Camper | Dump Trailer (Blue)](https://m.media-amazon.com/images/I/41EGYeQ4Y-L.jpg)**NUOVEPE Trailer Lock Fits 2 5/16 Inch Couplers Secures Safety Chains Anti-Theft Ball Hitch Lock Pry-Resistant & Heavy-Duty Trailer Hitch Locks for RV | Cargo | Camper | Dump Trailer (Blue)** NUOVEPE**$110.17**4.7★171 reviews](https://www.amazon.com/dp/B0DFH5NMCT) [![Kaowuzz Trailer Lock Heavy Duty Trailer Ball Lock Fits 2 5/16-Inch Couplers Anti-Theft Anti-Smashing Secures Safety Chains Solid Steel Towing Hitch Accessories for RV Cargo Boat (with Handle)](https://m.media-amazon.com/images/I/41T2p15YV2L.jpg)**Kaowuzz Trailer Lock Heavy Duty Trailer Ball Lock Fits 2 5/16-Inch Couplers Anti-Theft Anti-Smashing Secures Safety Chains Solid Steel Towing Hitch Accessories for RV Cargo Boat (with Handle)** Kaowuzz**$60.20**4.6★39 reviews](https://www.amazon.com/dp/B0FQJC4ZVB) [![2 5/16Inch-Trailer-Hitch-Locks-Kit Heavy Duty Anti Theft Trailer Tongue Lock Reinforced Solid Steel Weatherproof Tow Coupler Lock Trailer Locks Ball Hitch for RV Camper Cargo Boat Caravan](https://m.media-amazon.com/images/I/41aI7AhJGsL.jpg)**2 5/16Inch-Trailer-Hitch-Locks-Kit Heavy Duty Anti Theft Trailer Tongue Lock Reinforced Solid Steel Weatherproof Tow Coupler Lock Trailer Locks Ball Hitch for RV Camper Cargo Boat Caravan** NUOVEPE**$41.04**4.6★85 reviews](https://www.amazon.com/dp/B0FPWPZ8YL) ## **Reviews** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Quality-Overall**18% *“First off, the build quality is impressive”* **Size-Overall**14% *“Fits like a GLOVE”* **Ease Of Use**9% *“Ease of use”* **Value For Money**9% *“less expensive”* **Advertised Vs Actual Product**8% *“As Advertised”* **Strength**8% *“Heavy duty”* **Assembly/Installation**5% *“Easy install”* **Efficiency**4% *“Effective”* **Weight Heavy**4% *“It's very heavy and sturdy”* **Durability**3% *“I also appreciate that the materials feel durable and weather resistant, especially since theyre being used outdoors”* ### **What buyers complain about ** **Size-Overall**28% *“Its too short”* **Quality-Overall**11% *“Bad quality”* **Durability**7% *“it broke into pieces”* **Ease Of Use**5% *“not user friendly”* **Rusts/Corrodes**4% *“Starting to rust”* **Functionality-Overall**3% *“Dose not work at all”* **Compatibility-Overall**3% *“My bad, I assumed it was compatible”* **Value For Money**3% *“Slightly expensive”* **Strength**2% *“Not very robust”* **Weight Heavy**2% *“The whole unit has a heavy”* #### **Top return reasons**- Size-Overall61% - Compatibility-Overall18% - Advertised Vs Actual Product4% - Mechanism Issues4% - Functionality-Overall2% - Width2% - Value For Money2% - Defective Material/Parts1% - Locking Mechanism1% - Product Condition1%