Main Stud Kit ARP for Mazda Miata Mx-5 1.8 BP

ARP High-Strength Main Stud Kit – Mazda Miata / MX-5 1.8L BP

The ARP high-strength main stud kit is designed for Mazda Miata / MX-5 1.8L BP engines and provides superior bottom-end stability for high-performance and racing applications.

The studs are manufactured from premium 8740 chrome moly steel and heat-treated to 200,000 psi tensile strength. Precision J-form threads are rolled after heat treatment, creating threads that are up to 2000% stronger than conventional fasteners.

ARP main studs help reduce crankshaft flex and main cap fretting, significantly improving engine durability under high loads. Each kit includes hardened, parallel-ground washers and aerospace-quality nuts for maximum reliability.

Key features:

• Premium 8740 chrome moly steel

• 200,000 psi tensile strength

• J-form rolled threads

• Reduced crankshaft flex and main cap movement

• Washers and nuts included

Technical specifications:

• Engine: Mazda BP

• Application: Mazda Miata / MX-5 1.8L BP

• Series: ARP Main Stud Kit

• Material: 8740 Chrome Moly

• Strength rating: 190,000–200,000 psi