{"product_id":"proven-locks-model-s175-trailer-hitch-lock-2-5-16-in-heavy-duty","title":"Proven Locks Model S175 Trailer Hitch Lock 2 5\/16 in - Heavy Duty","description":"\u003cp\u003eOur review of the Proven Locks Model S175 finds it best suited for trailer owners who need a robust, tamper-resistant coupler lock for select 2 5\/16 in couplers. The lock's single biggest selling point is its construction: a solid stainless steel locking pin inside a ductile iron shell with a black powder-coated cover, which delivers a noticeable step up in physical protection compared with common alternatives. For those who tow boats, RVs or cargo trailers and want a lock that prioritizes brute-force resistance and a pick-resistant key system, this lock is worth serious consideration.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty construction:\u003c\/strong\u003e The solid stainless steel pin and ductile iron shell provide strong resistance to cutting and brute force attacks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePowder-coated exterior:\u003c\/strong\u003e The black powder coat finish protects the exterior from corrosion and wear while hiding scratch marks that could reveal tampering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePick-resistant key design:\u003c\/strong\u003e The unique key and interior locking mechanism make unauthorized picking and key duplication more difficult.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits select 2 5\/16 in couplers:\u003c\/strong\u003e The lock is custom tailored to mount securely only on compatible 2 5\/16 in trailer couplers for a snug fit and reliable security.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesigned for towing use:\u003c\/strong\u003e Built for trailers, boats and RVs, the lock focuses on practical field durability rather than decorative elements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe Proven Locks Model S175 is ideal for boat owners, RV enthusiasts and anyone towing a trailer with a 2 5\/16 in coupler who wants a no-nonsense physical deterrent against theft. It suits users who prioritize a robust lock body and a pick-resistant core more than lightweight or low-cost covers.\u003c\/p\u003e\n\u003cp\u003eIt is not the best option for trailers with couplers outside the select 2 5\/16 in sizing, and buyers who want electronic or keyed-alike fleet solutions should look elsewhere. Also, if a lighter, lower-priced lock is the priority rather than maximum physical protection, a simpler model may suffice.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVery sturdy build with a stainless steel pin and ductile iron shell for strong cut resistance.\u003c\/li\u003e\n\u003cli\u003eKey system resists picking and includes an interior lock feature to deter duplication.\u003c\/li\u003e\n\u003cli\u003eBlack powder coat finish improves corrosion resistance and conceals wear from use.\u003c\/li\u003e\n\u003cli\u003eGood fit and reliable function on compatible 2 5\/16 in couplers according to users.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompatibility is limited to specific 2 5\/16 in couplers, so fit must be verified before purchase.\u003c\/li\u003e\n\u003cli\u003eSome users report mixed experiences with the lock release mechanism sticking under certain conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eProven Locks Model S175 Trailer Hitch Lock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoupler fit\u003c\/td\u003e\n\u003ctd\u003eSelect 2 5\/16 in couplers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocking pin\u003c\/td\u003e\n\u003ctd\u003eSolid stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter shell\u003c\/td\u003e\n\u003ctd\u003eDuctile iron with black powder coat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKey system\u003c\/td\u003e\n\u003ctd\u003ePick-resistant unique key with interior locking mechanism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended use\u003c\/td\u003e\n\u003ctd\u003eTrailers, boats, RVs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Model S175 is a practical, heavy-duty trailer coupler lock for owners who need a hardened mechanical deterrent for a 2 5\/16 in coupler. Its combination of a stainless pin, ductile iron shell and pick-resistant key design makes it a good value for anyone prioritizing physical security over low cost or universal fit, provided they confirm coupler compatibility before buying.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this lock fit any 2 5\/16 in coupler?\u003c\/strong\u003e\u003cbr\u003eIt fits select 2 5\/16 in couplers only; check your coupler dimensions and mounting points against the lock specification before purchase.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the key system resistant to picking?\u003c\/strong\u003e\u003cbr\u003eYes, the lock uses a special key design and an interior locking mechanism that make picking and unauthorized duplication more difficult.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow durable is the exterior finish?\u003c\/strong\u003e\u003cbr\u003eThe black powder coat finish improves corrosion resistance and helps hide wear from use, making it suitable for towing and outdoor storage.\u003c\/p\u003e","brand":"Proven Industries","offers":[{"title":"Default Title","offer_id":48194761392347,"sku":"B0CBQVJ52F","price":120.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61UacJFDABL._AC_SL1500.jpg?v=1770271232","url":"https:\/\/gearmusthave.com\/products\/proven-locks-model-s175-trailer-hitch-lock-2-5-16-in-heavy-duty","provider":"GearMustHave","version":"1.0","type":"link"}