GRP is the rod of choice for many top drag racers and engine builders. They claim that their products' success depends on the consumer both installing and maintaining the rods properly. One mistake that people commonly make when building their high performance engine is improperly torquing the rod bolts. Sure a torque wrench is a great tool to use to torque down the bolt, but how are you checking that the torque wrench is torquing the bolts to the proper spec?

Many engine builders know that bolt stretch is a great way to check the rod bolts to make sure the will do their job correctly. GRP came up with a way to accurately measure bolt stretch with their new Bolt Stretch Gauge. It takes no time to use and understanding it couldn’t be easier. All you have to do it measure the bolt before installing it, then again after the bolt is torqued. The difference between the two numbers is your bolt stretch. Compare that to the specs listed from the bolt maker and replace if necessary.

• Lightweight and Easy To Use

• Easy To Read Gauge

For more on GRP, visit

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