ARP Bolt Kit - 12 Point (5) 5/16-18 x 1.250 R03J003L Add Hydration to your Stilo

Add Hydration to your Stilo ST4 and ST5 helmet with the Stilo Hydration System

which is rated at 170

or SA-2015 Open Face Helmets

Extruded aluminum bracket eases mounting

ARP Bolt Kit - 12 Point (5) 5/16-18 x 1.250 R03J003L Add Hydration to your StiloARPs product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, IMSA, NASCAR and NHRA drag racing and marine applications. Since 1968, ARP is the fastener of champions and the world leader in fastener technology. Product Description: Bolt 5 16 18 in Thread 1.