ARP's High-Performance Series head bolt kits are the toughest bolts you can buy. Rated at 180,000 psi, they're 15 percent stronger than Grade 8 bolts. That means they can handle more horsepower and torque, making them ideal for high-performance engines. So whether you're drag racing or just putting your car on the track, ARP High-Performance Series head bolt kits are the right choice for you. This hex bolt features a tough, corrosion-resistant finish. ARP's Lower Pulley Hex Bolt is a great choice when it comes to valve train maintenance. It gives your engine the best performance possible, and you need to make sure that all of the hardware is up to the task. These ARP Lower Pulley Hex Bolts are perfect for tightening down your cylinder heads, and they come with a reduced wrenching hex head or 12-point head that makes them easy to use. Plus, it's made from premium-grade materials and backed by ARP's industry-leading quality guarantee. So if you're looking for an easy and reliable way to take care of your valve train, go with ARP's Lower Pulley Hex Bolt.

Automotive Racing Product was founded by racing enthusiast Gary Holzapfel in 1968. He saw many of his car enthusiast friends' common problems were broken engines caused by fastener failure. During their time, there were no available stubs and bolts commercially. So Gary Holzapfel recalls his years of experience making fasteners for a leading aerospace subcontractor and founded his own fastener manufacturer, the Automotive Racing Product or ARP. ARP focuses on designing and engineering fasteners specifically for racing. ARP was the first company to engineer and design racing fasteners, and has developed many patented processes for manufacturing high-quality fasteners from very durable materials.