The optimal wheel restraint
solution to secure loading areas

Powerchock Portable 1

Secures 100% of vehicles

Robust, great restraining force

Low initial cost, low maintenance

Effective in winter

The POWERCHOCK™ PORTABLE is the POWERCHOCK™ family’s economically priced model offering safety at a low price. This wheel-based vehicle restraint system is an ideal safety application for any facility with loading docks and can be used universally with all vehicles.

System components

The POWERCHOCK™ PORTABLE comprises a 14 inch tall hardened steel chock, surface restraining ground plate, wall mounted bas and flexible pole.

Product Highlights

  • Cost effective – The design of the restraint unit has no moving parts, meaning no costly maintenance and no lubrication required.
  • Efficient restraint – Simple physics: the truck’s weight pushes the chock teeth downward into a fixed restraining ground-plate.
  • Universal compatibility – Restraints by the wheel, not by the rig bar.
  • Easy to operate – No training is necessary to set the chock.
  • Build to last – Chock is made of high-strength steel, 4 times harder than conventional steel. Ground plate is hot-dipped galvanized at over 800o F. Chock has double protection: zinc-plated and powder coated.
  • Unique all weather design – The chock is designed to break through ice and snow using the weight of the truck.
  • Virtually eliminates field errors – Factory tested for quality control and minimum installation time.


The POWERCHOCK™ PORTABLE vehicle restraint system is guaranteed to be exempt from defects in fabrication and components, if used properly and as intended, for a period of one (1) year following delivery date, and includes a three (3) year limited warranty on the chock and ground plate.

Key advantages

Easy to use. Quickly and easily set by driver in less than 30 seconds
Universal compatibility. Fits 100% of vehicles.
Excellent value. The POWERCHOCKTM family’s economically priced model.
Universal compatibility. Restrains the wheel instead of the RIG bar.
Conceived to operate in Winter conditions First conceived and marketed in Canada to endure extreme winter conditions.
Low Maintenance Virtually maintenance free: no moving with chock griping on grid plate, no lubrication. Lmited to visual inspection 2 minutes per system. Average expense with replacement parts: Year 1: $0 Projection over 5 years : $140.00
POWERCHOCK - Greater restraining force - Wheel restraint system
PORTABLE - Restraining force - Wheel restraint system
PORTABLE - Easy to set - Wheel restraint system
POWERCHOCK - Snow Removal - Wheel restraint system
PORTABLE - Safety sequence - Wheel restraint system
POWERCHOCK - Designed for winter - Wheel restraint

Simplicity of design

The Power ChockTM System has proved to be indispensable in our working environment. Our drivers love it because it’s so easy to use. It provides the level of security that we needed at Molson and we are extremely satisfied after having tried several different technologies.

Alex Zarate, Packaging Manager
Molson Canada

Reduce Repair Cost

Since we installed loading dock door barriers, our dock doors have not been struck. As a result our maintenance and repair budget has been significantly reduced.

Denis Vallée, Director of Maintenance
Olymel L.P

Choose Safety. Choose GMR Safety

We purchased the PowerChockTM System for the safety level it provided. We have installed this equipment in various facilities over the last 12 years. In our opinion, it is the best system on the market.

Serge Guy, Director


With the Power Chock System, we purchased value. From a maintenance stand point, there is virtually nothing that can go wrong with these units and they provide the safety we were looking for. The average cost per unit has been less than $50 a year. We have been very pleased with the great support  of the GMR team.

Mike Lecroy, Maintenance Manager

Universal compatibility

I wanted a restraint that didn’t depend on RIG bars,which are sometimes rusted out or torn off. The PowerChockTM System goes along with what drivers have been taught to do, which is to set a chock when they back intothe dock. This system gives us peace of mind.

Matthew Bourlakas, COO
Second Harvest Food Bank

Easy to use

For our shunt drivers, it takes less than 30 seconds to set or remove the PowerChock. There has been no financial impact or extra cost with the use of the PowerChock systems.

Mr. Alex Tarini, Director of Distribution
Metro Grocers

Total Cost Ownership

We wanted a system that would work with all types of vehicles. We tested many types of restraints; the simplicity of the Power ChockTM System and its total cost of ownership was what sold it for me.

Martin St-Pierre, Vice-President Logistic
Lumen Sonepar
GMR Safety is a world leader in the design and manufacture of wheel restrain systems. Our commitment: contribute to our customer's and partner's success by providing innovative, durable solutions to secure loading areas.

North America

2430 Boul. des entreprises
Terrebonne, Quebec
J6X 4J8, Canada

Phone: 450 968-0299
Toll Free: 1-888-629-4494
Fax: 450 968-0269



Phone: +33 7 83 62 69 01