ARP 4.030" Tapered Billet Aluminum Ring Compressor R07C09YM Helmet shields for FIA 8860-2018

Helmet shields for FIA 8860-2018 ST5 ABP helmets only

AN-06 size with a 100 micron stainless steel element and black anodize finishTo us

1956-1959 Ford Club

A dual purpose

ARP 4.030" Tapered Billet Aluminum Ring Compressor R07C09YM Helmet shields for FIA 8860-2018ARP's ring compressors are CNC machined from 6061 T6 billet tube material and feature a true radius for each different bore diameter. What's more, they are relieved for wire O rings on bottom. Type 3 anodizing is used for long life, and the bore size is prominently engraved in 3 4 in high numbers for easy identification. Standard stocking sizes from 3. 552 in to 4. 750 in (SAE) and 75mm to 95. 5mm (metric). The true radius design is far superior to