Ford SB 289 302 Windsor 5.4" 4.060" 1.090" 0.927" Flat Top Forged Pistons Speedmaster alternator pulleys are manufactured

Speedmaster alternator pulleys are manufactured from quality materials to ensure strength and durability

The BlackPoison® DNA polarized sunglasses designed by Speedmaster protects your eyes from harmful sun UV rays while keeping you looking sharp with its timeless

They are designed to fit a variety of applications

Designed for engines producing up to 500hp

while the extruded body has a tensile strength over 60

Ford SB 289 302 Windsor 5.4" 4.060" 1.090" 0.927" Flat Top Forged Pistons Speedmaster alternator pulleys are manufacturedSpeedmaster Forged pistons are made from 4032 aluminum alloy for quieter operation and reduced piston to wall clearance. Up to 20% lighter than traditional forged pistons that eliminate harmful stress concentrations for superior strength. Specifically designed for naturally aspirated or moderate nitrous applications.