Wiseco PTS514A1 Pro Tru Street Big Block Chevy Dome Piston Set Bore - 454 4.260 21cc

The Wiseco PTS514A1 is a complete Pro Tru Street series forged piston set designed for the Chevrolet Big Block 454 engine. Featuring a dome crown with a +21cc volume and a 1.645-inch compression height, this set is engineered to deliver increased compression for stronger street and performance builds. Each piston is forged from 4032 alloy aluminum right here in Mentor, Ohio, offering an excellent balance of strength, lightweight construction, and thermal stability.

Key Features:

• Bore Diameter: 4.260 in.
• Compression Height: 1.645 in.
• Dome Volume: +21cc AS-Forged dome with crown features and oil drain backs
• Pin Diameter: 0.990 in. chromium alloy steel piston pin included
• Material: 4032 forged aluminum — manufactured in the USA
• ArmorGlide® Skirt Coating: Dry film lubricant for seizure resistance, friction reduction, and quieter operation
• Includes: Rings, pins, and Spirolox® clips for a complete, all-inclusive rebuild

The ArmorGlide® skirt coating is a permanently applied dry film lubricant that reduces friction and helps protect against piston scuffing during cold starts and high-stress operation. The AS-forged dome design with oil drain backs promotes proper lubrication and contributes to durability under demanding conditions.