Product Description

Trimax UMAX50 The UMAX50 features a rugged corrosion resistant finish. Provides instant security for your camper, boat or trailer when they are not hooked up to your vehicle. Features 1/2 turn technology that cannot be false locked. For dual force security add a TRIMAX chain or cable secured to an anchor point! Also, add a TRIMAX coupler lever lock for additional protection. Easy Installation. Slide ball up into coupler and replace u-shackle. Fits all of the following coupler and more: 1-7/8" or 2" Fulton, Atwood 2", UFP, Bulldog, 2-5/16" couplers, Fulton Heavy Duty, Surge Brake (reverse mount). TRIMAX makes the world's toughest locks. Through value added engineering design, TRIMAX is committed to product innovation that holds up to the hightest quality standards. TRIMAX provides maximum security for marine, trailer and tow, RV, performance truck, power sports and bicycle applications. Tested. Tough. TRIMAX. TRIMAX offers a lifetime warranty on all of their products.

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Product Details

• Amazon Sales Rank: #338 in Automotive
• Color: Steel
• Brand: Trimax
• Model: UMAX50
• Released on: 2007-09-14
• Number of items: 1
• Dimensions: 9.00" h x 4.00" w x 4.00" l, 1.00 pounds

Features

• One size fits all (from 1-7/8", 2", to 2-5/15", all coupler types)
• Key hole cover slides up to seal out dirt and grime
• Type A key which is a spring loaded, 7 pin, high security key. Resists attempted drill outs. Rugged and durable, the key will not bend or break.
• Huge 6 tooth, 3/8" dual ratchet locking system
• Hardened 5/8" 16mm steel shackle

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Customer Reviews

Most helpful customer reviews

5 of 5 people found the following review helpful.
not solid hardened steel
By Famous Amos
This is probably an ok lock, but it is not entirely made up of solid hardened steel, making it possible to break, especially in cold weather. However, Amazon was terrific with letting us return the item at their cost, due to the inaccurate description.

9 of 11 people found the following review helpful.
Beware - Not a "Universal" Lock
By Gene F
I bought the Trimax "Universal" lock only to find it was not universal. When attached to a Brenderup horse trailer's coupler, it would slide off over the front or simply fall off if the coupler lever was raised. The lock seems to require a groove on the top of the coupler to hold the lock's top bar-loop. Else, as on my trailer, it will not stay attached. It seems solid and may work for some trailers, but not for all.

Instead, try the Master Lock Universal Trailer Coupler Lock #377DAT; it worked for me and seems as if it will work for all couplers. Also it's $18 with free shipping instead of $36 plus $10 shipping for the Trimax.

That said about this product and it's inaccurate billing, I am happy with Mobile Mart who refunded my costs and paid for return shipping the lock.

4 of 4 people found the following review helpful.
Trimax UMAX50 trailer Tongue Lock
By Jimmy R Pearson
This Tongue Lock seems to be well designed, however it did not fit very well on the Dutton - Lainston coupler for a/ 2-5/16" ball, installed on my 2004 Terry/Fleetwood Travel Trailer. The top security bar does not fit down tight behind the curvature in the coupler where the trailer ball fits. It looks like the coupler lock could be defeated easily with a couple of hard blows from a good sledge hammer. Beware, make sure this coupler lock fits your coupler snug before you purchase it.