Synrroe Keyless Combination Trailer Hitch Lock Pin 5/8" – 2" & 2.5" Receivers, 30,000 lb Rated

This hitch lock pin is built for owners who tow heavy loads but want a simple, key-free way to secure trailers, bike racks, and cargo carriers. It uses a resettable 4-digit code so you can share access without duplicating keys, and its high-tensile forged steel construction with a protective powder coat resists cutting, prying, and the elements. Before ordering, check the important compatibility details: the usable shaft length is 3.5 inches and it is designed only for standard thin-wall 2" and regular 2.5" receivers. Several heavy-duty factory or thick-wall receivers are incompatible.

Which vehicles and receivers will this lock fit?

The Synrroe lock fits standard thin-wall 2" hitch receivers and regular 2.5" receivers with at least 3.5" of usable pin clearance. It will not work with thick-wall, factory-class heavy-duty 2.5" receivers or 3" Class V receivers that reduce usable shaft length.

• Compatible: standard thin-wall 2" receivers (classic trailer hitches)
• Compatible: regular 2.5" receivers with 3.5" usable shaft length
• Not compatible: many heavy-duty/factory thick-wall receivers
• Not compatible examples: 2024–2026 Toyota Tacoma (4th gen), Ford Super Duty F-250/350/450/550, Ram 2500/3500, Silverado/Sierra 2500HD–3500HD (2019–2026)

How secure is the Synrroe 5/8" hitch lock?

Security is built around a forged, high-tensile steel pin and a heavy-duty internal mechanism rated to 30,000 lbs GTW. A thick black powder coat and weatherproof cap protect against corrosion and tampering, while the compact, hardened design resists sawing and prying attacks common to flimsy pins.

• Rated 30,000 lbs GTW for heavy-duty towing scenarios
• Forged carbon steel body with powder-coat finish for cut and rust resistance
• Weatherproof cap seals the combination mechanism from dirt and ice
• Compact 5/8" diameter profile minimizes leverage points for thieves

Why choose a keyless 4-digit combination over a keyed lock?

A keyless system eliminates the risk of lost or broken keys and simplifies sharing access among family or crew. The Synrroe lock supports 10,000 possible resettable codes so you can customize and change the code as needed without special tools.

• Keyless operation avoids key duplication and lockouts
• 10,000 resettable combinations for unique access control
• Easy to share codes with trusted users rather than handing over keys
• Tip: photograph your chosen code for secure backup to prevent accidental lockouts

How does it perform in saltwater and winter conditions?

The internal lock is shielded by a snug weatherproof cap and corrosion-resistant finishes to handle marine ramps and winter road salt. Routine rinsing after salt exposure and occasional lubrication will maximize long-term smooth operation.

• Weatherproof cap prevents grime, rain, and ice from seizing the mechanism
• Black powder coat and hardened steel resist rust in harsh environments
• Designed for year-round use with simple maintenance steps

Who is this for: Synrroe's Keyless Combination Trailer Hitch Lock Pin is aimed at boat owners, horse-trailer operators, landscapers, and anyone who tows heavy loads and needs a robust, key-free locking solution. If your trailer setup uses a standard thin-wall 2" or a regular 2.5" receiver with at least 3.5" usable pin length, and you want a high-strength, weather-resistant lock rated for serious towing, this product is a practical security upgrade. Do not buy if your vehicle uses a thick-wall factory 2.5" receiver or a 3" Class V receiver—verify receiver type before purchase to ensure fit and safe operation.