{"product_id":"proven-industries-2-inch-trailer-coupler-lock-s175-heavy-duty-stainless-pin-pick-resistant","title":"Proven Industries 2-Inch Trailer Coupler Lock S175 — Heavy-Duty Stainless Pin, Pick-Resistant","description":"\u003cp\u003e\u003cstrong\u003eProven Locks S175 is a heavy-duty 2-inch trailer coupler lock that secures trailers, boats, and RVs with a stainless steel pin inside a ductile iron housing and a pick-resistant key system.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen you park a trailer, boat, or RV, the coupler is one of the most vulnerable points. The Proven Locks S175 Trailer Coupler Lock is built specifically for trailers with 2-inch couplers and combines robust materials with an intentionally designed key system to make unauthorized detachment difficult. This product description explains what the lock is, how it fits, and the practical benefits you can expect when protecting your equipment.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the S175 lock attach to a 2-inch trailer coupler?\u003c\/h3\u003e\n\u003cp\u003eThe S175 is shaped to mount directly over compatible 2-inch couplers and secures by inserting a solid locking pin through the coupler. Once in place, the lock blocks the coupler latch and prevents the hitch ball from being inserted or lifted off.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits select standard 2-inch trailer couplers—verify dimensions before purchase.\u003c\/li\u003e\n  \u003cli\u003eLocking pin passes through coupler opening to prevent hitch engagement.\u003c\/li\u003e\n  \u003cli\u003eExterior cover shields the mechanism from tampering and weather.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and construction make this lock sturdy?\u003c\/h3\u003e\n\u003cp\u003eThe S175 uses a solid stainless steel pin for internal strength and a ductile iron outer shell to resist impact and cutting attempts. The visible cover is finished with black powder coating to add corrosion resistance and a tougher surface against forced entry tools.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStainless steel internal locking pin for tensile strength and rust resistance.\u003c\/li\u003e\n  \u003cli\u003eDuctile iron housing absorbs impacts better than brittle metals.\u003c\/li\u003e\n  \u003cli\u003ePowder-coated exterior reduces corrosion and disguises wear.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the key design reduce tampering risk?\u003c\/h3\u003e\n\u003cp\u003eThe lock employs a specially designed key and internal mechanism intended to make picking and unauthorized duplication more difficult. An internal locking profile and restricted key geometry add a layer of mechanical control that deters common illicit entry methods.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUnique key profile limits easy duplication at ordinary key cutters.\u003c\/li\u003e\n  \u003cli\u003eInterior locking components are not exposed, reducing pick access.\u003c\/li\u003e\n  \u003cli\u003eSupplied keys operate the lock while preventing simple bypass tools from engaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I confirm before ordering the S175?\u003c\/h3\u003e\n\u003cp\u003eBecause the S175 is made for specific coupler sizes and shapes, measure your coupler before buying. Ensure your trailer’s coupler matches the 2-inch specification and that there is sufficient clearance for the lock body to close around the coupler.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeasure coupler opening and overall latch profile for compatibility.\u003c\/li\u003e\n  \u003cli\u003eConfirm you have a standard 2-inch coupler—not an alternate size or adapter.\u003c\/li\u003e\n  \u003cli\u003eCheck for obstruction from wiring or accessories that could block installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: The Proven Locks S175 is designed for boat owners, RV owners, and trailer operators who need a purpose-built mechanical coupler lock for standard 2-inch trailer couplers. If you tow frequently, store a trailer in public areas, or want an extra barrier against unauthorized hitching, this lock provides a durable, fit-specific solution. It suits buyers who prefer a physical deterrent made from robust materials with a more secure key system than generic padlocks or simple latch clips.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will the S175 fit any 2-inch coupler?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fits many standard 2-inch couplers but confirm your coupler dimensions and latch clearance before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can the lock resist bolt cutters and pry bars?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The ductile iron shell and stainless pin are designed to resist cutting and prying, though no lock is completely impervious.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Proven Industries","offers":[{"title":"Default Title","offer_id":67585191411897,"sku":"B07YN2MD6W","price":284.14,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/proven-locks-s175-front-view.jpg?v=1790469546","url":"https:\/\/redleafauto.ca\/products\/proven-industries-2-inch-trailer-coupler-lock-s175-heavy-duty-stainless-pin-pick-resistant","provider":"Redleaf Auto","version":"1.0","type":"link"}