ARP 4.125" Tapered Billet Aluminum Ring Compressor 935116 18 x 23 x 32

18 x 23 x 32 in Trapezoid

435 in Long

5/16 in Shoulder

The four components included in the Stilo YA0873 kit perfectly match your Stilo ST5 chin pad to stop air from coming in through the front air vents

ARP 4.125" Tapered Billet Aluminum Ring Compressor 935116 18 x 23 x 32ARP'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