Akerly & Childs 4.125" Xtreme Piston Ring Compressor 711001 The exhaust port and bolt

The exhaust port and bolt pattern are raised

The Top Air System can be fitted onto ST5 Formula and GT models

3D MAXpider offers a full-range of precision-measured liner solutions to enhance a vehicle's interior

22-3/4 in Long

Wrap Around or Bolt-in Mounting

Akerly & Childs 4.125" Xtreme Piston Ring Compressor 711001 The exhaust port and boltPiston installation is as important a procedure as any other during engine assembly. That is why Akerly & Childs Xtreme ring compressors are manufactured with the engine builder in mind. All compressors are machined with a step at the bottom to clear block o rings when used. Xtreme compressors are manufactured from aircraft quality 6061T6 heat treated aluminum and then hard anodized for long life. Akerly & Childs over 50 years experience in racing