Match the part number, measurements and connection points that apply to your trailer.
| Connection | Confirm ball or lunette size. |
|---|---|
| Mount | Verify tongue, channel and mounting pattern. |
| Capacity | Meet or exceed the required rating. |
A complete keyed-alike trailer security set designed to protect the coupler, latch, and receiver with one convenient system for storage, transport, and everyday towing use.
The Trimax TMX86SR is a keyed-alike trailer lock kit that helps secure your trailer whether it is parked, stored, or hitched up for the road. This all-in-one package includes a universal coupler lock, an adjustable latch lock, receiver lock components, backup keys, and a carrying case to keep the system organized and ready to travel.
Compatibility: Fits trailer couplers designed for 1-7/8", 2", and 2-5/16" hitch balls. The latch lock works with coupler latch spans of 7/8", 2-1/2", or 3-1/2". Receiver lock components are intended for 2" and 2-1/2" hitch receiver applications.
Vehicle / System Fit: Universal towing security kit for a wide range of bumper-pull trailer setups, including utility, cargo, equipment, boat, and recreational trailers using common ball coupler sizes.
Installation Notes: Confirm coupler style, latch span, and receiver size before ordering. Measure the latch span and verify the lock pin diameter and usable span against your hardware.
Performance Insight: A keyed-alike system helps simplify your towing setup while securing the three most common trailer connection points: the coupler, the latch, and the receiver.
Keyed-alike design lets you unlock the coupler, latch, and receiver locks with a single key, while backup keys are included for added convenience.
Includes lock components for unattended storage and for the active towing connection points most trailer owners use every day.
Designed to work with 1-7/8", 2", and 2-5/16" couplers, common latch spans, and 2" or 2-1/2" receiver applications.
The included carrying case keeps the full kit together so the locks stay clean, organized, and easy to grab before you tow.
| Specification | Detail |
|---|---|
| Type | Trailer tongue / coupler / latch / receiver security lock kit |
| Application | Universal trailer security for couplers, coupler latches, and hitch receivers |
| Fitment | Fits 1-7/8", 2", and 2-5/16" ball couplers; latch spans of 7/8", 2-1/2", and 3-1/2"; receiver applications for 2" and 2-1/2" hitches |
| Shackle Diameter | 9/16" |
| Coupler Lock Dimensions | Inside pin length adjustable from 2-1/2" to 3-1/2"; pin diameter 7/8" |
| Receiver Lock Dimensions | Inside pin length 5/8"; pin diameter 1/2"; converts easily to a 5/8" pin with included stainless steel sleeve |
| Receiver Lock Pin | 5/8" diameter x 3-1/2" span |
| Part Number | 799031 |
| Category | Details |
|---|---|
| Vehicle / System | Bumper-pull trailer coupler and hitch receiver security applications |
| Coupler Fit | Works with couplers for 1-7/8", 2", and 2-5/16" hitch balls |
| Latch Fit | Works with coupler latches with spans of 7/8", 2-1/2", or 3-1/2" |
| Receiver Fit | Fits 2" x 2" trailer hitches and is also intended for 2-1/2" receiver applications with included components |
| Notes | Verify coupler ball size, latch span, and receiver dimensions before ordering or installation. |
| Quantity | Item |
|---|---|
| 1 | UMAX50 deluxe universal unattended coupler lock |
| 1 | TMX98SR adjustable trailer coupler latch lock |
| 1 | TS32 universal receiver lock with stainless steel sleeve |
| 1 | T5 universal receiver lock pin |
| 1 | Carrying case |
| Included | Backup keys |
