The REDARC GMC-3.25 Muffler Clamp offers has been designed specifically to mount REDARC's line of EGT probes. It has a maximum opening of 3.25", which is perfectly suited for fitting one of REDARC's range of EGT and boost-pressure gauges to your vehicle.This clamp is compatible with the following products: G52-BEP, G52-BET. G52-BEA, G52-EB ,and G52-EU.The REDARC Muffler Clamp is delivered with a 2-year manufacturer's warranty covering faults and material defects.SpecsMaximum opening: 3.25"/58-81mmCompatible products: G52-BEP, G52-BET. G52-BEA, G52-EB, and G52-EU