• Wiseco Pro-Tru SBC Chevrolet LS Series +4cc OEM Pin 1.335in / 3.903in Bore w/ 1/16 x 1/16 x3mm Rings PTS523A903 PTS523A903 Photo - Primary
  • Wiseco Pro-Tru SBC Chevrolet LS Series +4cc OEM Pin 1.335in / 3.903in Bore w/ 1/16 x 1/16 x3mm Rings PTS523A903 PTS523A903 Photo - out of package
  • Wiseco Pro-Tru SBC Chevrolet LS Series +4cc OEM Pin 1.335in / 3.903in Bore w/ 1/16 x 1/16 x3mm Rings PTS523A903 PTS523A903 User 1
  • Wiseco Pro-Tru SBC Chevrolet LS Series +4cc OEM Pin 1.335in / 3.903in Bore w/ 1/16 x 1/16 x3mm Rings PTS523A903 PTS523A903 User 2
  • Wiseco Pro-Tru SBC Chevrolet LS Series +4cc OEM Pin 1.335in / 3.903in Bore w/ 1/16 x 1/16 x3mm Rings PTS523A903 PTS523A903 User 3
  • Wiseco Pro-Tru SBC Chevrolet LS Series +4cc OEM Pin 1.335in / 3.903in Bore w/ 1/16 x 1/16 x3mm Rings PTS523A903 PTS523A903 User 4
  • Wiseco Pro-Tru SBC Chevrolet LS Series +4cc OEM Pin 1.335in / 3.903in Bore w/ 1/16 x 1/16 x3mm Rings PTS523A903 PTS523A903 User 5
  • Wiseco Pro-Tru SBC Chevrolet LS Series +4cc OEM Pin 1.335in / 3.903in Bore w/ 1/16 x 1/16 x3mm Rings PTS523A903 PTS523A903 User 6
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Wiseco Pro-Tru SBC Chevrolet LS Series +4cc OEM Pin 1.335in / 3.903in Bore w/ 1/16 x 1/16 x3mm Rings PTS523A903

Wiseco Pro-Tru SBC Chevrolet LS Series +4cc OEM Pin 1.335in / 3.903in Bore w/ 1/16 x 1/16 x3mm Rings PTS523A903

sku: 0V9V5 | mpn: PTS523A903
$714.99
$655.99 $714.99
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Low stock: 6 left

Emissions

⚠️ RACING/COMPETITION Use Only

California: Non-compliant parts may be used only on designated closed-course racing vehicles that are never registered for highway use.

Other: Please consult your local statutes and ordinances to ensure compliance with regional emissions standards.

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Our Pro Tru? Street series pistons are forged from 4032 alloy aluminum in Mentor, Ohio and includes rings, pins, and clips for an all-inclusive rebuild. For any build budget, Wiseco has the piston to get you on the road or down the track.
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