Billet Flex Plate

Features:

• Fits 2011–2016 6.6L Duramax LML applications
• Replaces weak factory stamped steel flex plate
• One-piece billet steel construction for strength
• Eliminates heavy cast iron flywheel components
• Built to handle high torque power levels
• Prevents cracking under aggressive load conditions
• Ideal for use with upgraded torque converters
• Improves torque transfer to the transmission
• Bolts directly to crankshaft and torque converter
• Essential for tuned or high horsepower builds
• Provides a stable, slip-free connection under load
• Engineered for long-term reliability and performance

Protect Your Drivetrain With Real Billet Strength

If you're pushing power through your 2011–2016 Duramax, the last thing you want is a factory flex plate tearing itself apart under load. The SunCoast A1-BFP-ZB Billet Flex Plate is a serious upgrade that eliminates the common failures seen with stock stamped steel or cast iron flywheels. Whether you're towing heavy, running big tuning, or simply putting your truck to work, this one-piece billet steel plate delivers the strength and durability your build demands. It’s designed to transfer torque more efficiently by providing a solid, flex-free connection between the crankshaft and your upgraded torque converter. You get better power delivery, less driveline shock, and peace of mind knowing your flex plate isn’t the weakest link. This is the kind of upgrade you do once, knowing it's built to take abuse for the long haul. If reliability and performance are at the top of your list, this billet plate belongs in your setup.

Designed To Eliminate Flex Plate Failure Under Load

The SunCoast A1-BFP-ZB Billet Flex Plate is engineered to directly replace the factory flywheel on 2011–2016 GM 2500HD and 3500HD Duramax LML trucks, offering a major structural upgrade where it matters most. Factory units rely on stamped steel and cast iron materials, which are known to crack or separate when exposed to high torque loads, especially when paired with a performance torque converter. This billet steel flex plate eliminates those weak points with a precision-machined, one-piece design that bolts directly to the crankshaft and torque converter. It’s capable of handling increased engine torque and transmits power with improved consistency and reduced deflection under load. By reinforcing the connection between engine and transmission, this upgrade ensures smoother engagement, reduced risk of failure, and better long-term durability. It’s an ideal choice for tuned trucks, heavy-duty towing, or performance builds running higher stall converters. When power and reliability are non-negotiable, this flex plate is a critical component you can trust.

Fitment: 2011, 2012, 2013, 2014, 2015, 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Notes:

• Fits 2011–2016 GM 2500HD/3500HD 6.6L Duramax LML
• Replaces factory cast iron and stamped steel flex plate
• One-piece billet steel design improves strength and reliability
• Designed to handle high torque from tuned engines
• Ideal for use with performance torque converters
• Prevents center cracking or tearing under heavy load
• Improves torque transfer to the transmission input shaft
• Recommended for high horsepower or towing applications
• Provides a more stable and slip-free connection
• Bolts directly to the crankshaft and torque converter