Manley Chevy LT1 Direct Injected Series 4.00in Stroke 4.075in Bore -20 cc Dish Extreme Duty Pistons

Manley Performance is well-known for building strong engine components, and their Direct Injected Series pistons are a prime example of that commitment. If you're building a high-performance Chevy LT1 engine, especially one with direct injection, these pistons are designed to handle the demands of serious power. They feature a 4.00-inch stroke and a 4.075-inch bore, with a -20cc dish to help achieve your desired compression ratio.

These pistons are forged from domestic 2618 alloy, a material chosen for its exceptional strength and ability to withstand high cylinder pressures and temperatures. Manley uses proven cam and barrel skirt profiles, which help reduce friction and wear on your cylinder walls while still generating substantial power. The ring lands and grooves are machined to exacting standards, ensuring a tight seal for improved combustion efficiency and more power output. For added durability, these pistons come with premium Chrome Moly wrist pins, and Manley's unique fixturing process ensures the ring grooves are perfectly square to the skirt, which is critical for maintaining that seal under stress.

When you're pushing an engine hard, the details matter. Manley's focus on precise machining and strong materials means these pistons are built for durability and performance. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. They are designed for custom engine builds where performance and reliability are top priorities.