Speedmaster 1-254-016 DNA One-Piece Pushrods 8.000" 5/16" 4130 Chromoly

The Speedmaster 1-254-016 DNA One-Piece Pushrods are precision-engineered from 4130 chromoly steel and heat-treated for maximum durability in high-performance OHV valvetrain applications. Measuring 8.000 inches in length with a 5/16-inch diameter and 0.080-inch wall thickness, these pushrods are purpose-built to handle the demands of high-lift camshafts and elevated RPM operation.

Manufactured as part of Speedmaster's DNA series, these one-piece pushrods eliminate the flex and failure points associated with multi-piece designs. The heat-treated construction ensures compatibility with guideplates, while the black oxide finish provides corrosion resistance. Internal oiling passages support proper lubrication throughout the valvetrain.

Key Features:

• Material: 4130 chromoly steel — superior strength-to-weight ratio over mild steel
• Length: 8.000 inches (intake and exhaust)
• Diameter: 5/16 inch (0.3125 in.)
• Wall Thickness: 0.080 inches — engineered for high-RPM use
• One-piece construction — eliminates failure points for race and performance builds
• Heat-treated — compatible with guideplates
• Ball tip, top and bottom — formed tip attachment
• Internal oiling — promotes consistent valvetrain lubrication
• Black oxide finish — corrosion-resistant protective coating
• Intended for racing applications only — not for street use

Speedmaster DNA pushrods are part of the brand's Track Proven lineup, designed to survive the demands of road, race, and recreational performance builds. Select the correct pushrod length carefully for custom or modified engines — always verify with a pushrod length checker when changing cam profiles, cylinder heads, or block deck height.