ARP 4.310 Tapered Ring Compressor Crow Safety Gear Arms are exceptionally strong and

Arms are exceptionally strong and will not flex

The Pro 5R is our most performance-oriented media available

Exclusively designed for use with Eatons Aeroquip (R) A/C fittings to provide a superior performing combination

Silver Bullet throttle body spacers are constructed out of durable T-6061 billet aluminum and using a unique serrated/helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix only throttle spacers

ARP 4.310 Tapered Ring Compressor Crow Safety Gear Arms are exceptionally strong andARP'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