Manley 621100C-1 Performance Forged Piston 99.5mm Bore Dish Top for Subaru

The Manley 621100C-1 is a high-performance forged piston designed specifically for Subaru engines. Featuring a 99.5mm bore diameter and a 1.285" compression distance, this piston is engineered for serious performance applications where durability and precision are critical.

Key Specifications:

• Bore Diameter: 99.5mm (3.917 inches)
• Compression Distance: 1.285 inches
• Dish top design for optimal compression ratio tuning
• Forged construction from premium aluminum alloy for superior strength
• Precision machined to exacting tolerances
• Designed for forced induction and high-output naturally aspirated applications

Manley Performance pistons are manufactured using advanced forging techniques and proprietary alloys to deliver maximum strength-to-weight ratios. The dish top design allows for flexibility in compression ratio optimization, making this piston ideal for turbocharged builds where lower compression is desired. Each piston undergoes rigorous quality control to ensure consistent performance and reliability under extreme operating conditions.

Note: This listing is for a single piston. Most engine builds require a complete set. Verify all specifications including bore size, compression distance, and ring groove dimensions before installation.