Mo-Clamp G-Clamp

Mo-Clamp G-Clamps Built for Collision Repair

In a body shop, a G-clamp is not a woodworking helper. It is a pulling tool that has to hold fast to damaged sheet metal and structure while a frame machine or chain applies thousands of pounds of force. Mo-Clamp, a collision repair tool maker founded in 1948 and based in Oregon, builds its G-Clamp for exactly that job. The company states its tools are made in the USA and backed by a lifetime warranty.

The 5800 G Clamp

The Mo-Clamp 5800 G Clamp is the core of the brand's G-clamp offering. It is designed to make pulling easier from multiple angles. A 4-inch throat opening lets technicians reach around, behind and over the damage. A movable shackle adds versatility, so the pull direction can be adjusted to suit the repair rather than forcing the setup to fit the clamp.

Construction matters when a clamp is under load. The 5800 is cast for extra strength and made from heat-treated alloy steel, and it includes a swivel pad. The published specifications list a capacity of 5 tons (about 11,000 lbs of straight pulling), an overall length of 10 1/2 inches, an overall width of 6 inches and a weight of 6 lbs.

The Jumbo G Clamp for Deeper Reach

For repairs where a standard throat is not enough, Mo-Clamp also lists the 5802 Jumbo G Clamp. It is a 5-ton pulling clamp with a 7-inch throat opening intended to reach over, around and behind collision damage. For additional pulling configurations, it can be paired with the optional 4059 5/8-inch screw pin shackle, sold separately. Together, the two sizes let a shop match throat depth to the part of the vehicle being pulled.

Serviceable by Design

A clamp used daily wears at its pivot points and contact surfaces. Mo-Clamp supports the 5800 with individual replacement parts, including the #4055 screw pin shackle, #520034 main shaft and #840065 swivel pad. Replacing a worn component is more practical than replacing the whole tool, which suits professional shops.

Why Mo-Clamp Stands Out

Mo-Clamp is best known as the originator of the self-tightening clamp using the patented wedge pulling ring. The G-clamps take a different approach from those wedge-ring designs, relying on a rigid cast body and adjustable shackle for flexible pulling angles. They draw on the same collision-focused engineering behind the rest of the line.

Choosing a G-Clamp for Pulling Work

• Throat depth: a 4-inch opening suits most panel and rail work, while the 7-inch Jumbo handles deeper or more awkward access.
• Rated capacity: confirm the clamp's rating exceeds the force your frame machine will apply, and never use pulling clamps for lifting.
• Pull angle options: a movable shackle or multiple pull holes help direct force where the repair needs it.
• Serviceability: available replacement shafts, pads and shackles extend working life.

Browse the full G-Clamp category to compare other makers, or visit the Mo-Clamp brand page to see the rest of the company's pulling, anchoring and measuring tools.