Manley Chevy LT1 Direct Injected Series 4.00in Stroke 4.125in B -20 cc Dish Platinum Series Pistons

When you're building a high-performance Chevy LT1 engine, especially one with direct injection, you need pistons that can handle the stress and deliver power reliably. This set of Manley Platinum Series pistons is designed for a 4.00-inch stroke and a 4.125-inch bore, featuring a -20cc dish to achieve your desired compression ratio. You'll receive a complete set of pistons, ready to be installed in your engine build.

Manley uses domestic 2618 alloy forgings for these pistons, which are known for their exceptional strength and ability to perform under demanding conditions. They also come with premium chrome moly wrist pins, and for some part numbers, you can even upgrade to even tougher 9310 or Turbo Tuff/DLC alloys for added durability. The ring lands and grooves are machined to very strict standards, which is crucial for getting a good seal with your piston rings, leading to more power and better efficiency. Manley's unique fixturing process ensures that the ring grooves are perfectly square to the piston skirt, a detail that many professional engine builders rely on for consistent performance.

These pistons also feature proven cam and barrel skirt profiles. This design helps them generate substantial power while also being less abrasive on your cylinder walls during operation. If you're looking to build a serious LT1 engine, these Manley pistons are a solid choice that many professional tuners and engine builders trust for their projects.