C.R.T. Thumper 117mm Billet compressor and G trim turbine wheel 2700+hpLarge Frame Thumper turbos are the largest turbo available turbo in the C.R.T. line up. The Thumper use a G trim turbine wheel available in 1.32 and 1.50 A/R exhaust housing. The 117mm Billet compressor wheel with the industry's largest exducer of 151mm helps this turbo to make 2700+hp. Every Thumper turbo is custom built per application to give you the performance edge you need to be on top.