Pioneer 871012 SFI-Rated Flexplate 153 Tooth Internal Balance

The Pioneer 871012 is an SFI 29.1 certified flexplate engineered for high-performance and racing applications. This precision-manufactured flexplate features a 153-tooth ring gear configuration with a 12.75-inch diameter, designed for Chevy V6, V8, and inline-6 engines with internal balance and 1-piece rear main seal.

Key Features:

• SFI 29.1 certified for racing and high-performance applications
• Machined from high-strength 0.130-inch steel that exceeds factory specifications
• Bolt patterns punched from OEM blueprints to ensure exact fitment
• Double-welded ring gear for maximum reliability and strength
• Dichromate finish resists corrosion and extends service life
• Fully inspected to meet stringent quality standards
• Designed for internal balance engines with 1-piece rear main seal

Pioneer flexplates are built to restore OEM levels of performance while meeting the demanding requirements of racing applications. Each flexplate undergoes precision balancing to factory specifications and features an automated welding process for exceptional strength and consistency.