Wilwood Caliper Pistons 1.38in x 0.84in Stainless Powerlite

Wilwood Caliper Pistons — 1.38" x 0.84" Stainless Powerlite Upgrade braking response and reliability with Wilwood Caliper Pistons, precision-machined from lightweight Stainless Powerlite. Engineered for consistent performance under extreme heat and pressure, these pistons resist corrosion and wear while reducing rotating mass for quicker system recovery. Dimensions: 1.38" outer diameter × 0.84" bore Material: High-strength Stainless Powerlite — low mass, high thermal stability Finish: Smooth bore surface for reliable sealing, reduced friction, and consistent piston travel Durability: Corrosion-resistant construction for street, track, and racing use Fitment: Direct replacement for compatible Wilwood calipers — verify model fitment before purchase Ideal for caliper rebuilds, performance upgrades, and motorsport applications, these pistons are manufactured to tight tolerances for predictable pedal feel and braking efficiency. Simple to install and inspected for quality control, they extend caliper life and maintain braking performance in demanding conditions.