Arp are the leading brand in fastener technology. All fasteners are made with the highest quality materials with quality assurance testing. 

Flywheel and Flexplate bolts play an important role in the performance and safety of race cars and street machines alike. That’s why the fastener experts at ARP have developed special bolts that are far superior to OEM hardware. ARP offers the premium grade Pro Series, originally developed for NASCAR competition, has a 190,000 psi rating They are forged from aerospace alloy and heat-treated prior to thread rolling and machining.