Watch in action

Reinforce Your Miata Bottom End

The ARP 218-5401 Main Stud Kit is an essential upgrade for any Mazda Miata owner looking to increase the reliability of their engine's bottom end. Whether you are building a high-revving naturally aspirated engine or a turbocharged monster, these main studs provide the stability your crankshaft needs to handle increased power and torque.

Key Features and Benefits

• High-strength 8740 chromoly steel
• Provides superior main bearing cap stability
• Prevents main cap walk under high-load conditions
• Includes nuts and washers for a complete installation
• Compatible with all 1990-2005 Mazda Miata B-series engines

By replacing the stock main bolts with these high-performance studs, you ensure that the main bearing caps stay firmly in place, reducing crankshaft flex and protecting your engine internals. This kit is a must-have for any serious engine rebuild, offering the durability required for competitive racing or spirited street driving. The precision engineering behind every ARP fastener ensures that you get consistent torque and reliable performance every time. Enhance your engine's longevity and performance with this premium hardware kit. Find the best parts for your build at GGCRACING.