SunCoast A1-BC2 Allison Billet C2 Clutch Hub | 2004-2019 GM Silverado/Sierra 2500HD/3500HD

Features:

• Precision-machined billet steel construction
• Improves transmission durability under load
• Designed for heavy-duty towing applications
• Compatible with Allison 1000/2000 series
• Reduces internal stress and wear
• Enhanced clutch engagement and performance
• Ideal for high-horsepower diesel builds
• Resists warping under extreme heat
• Direct fit for 2004–2019 GM HD trucks
• Made in the USA by SunCoast
• Built for long-lasting reliability
• Trusted by performance transmission experts

Built to Handle the Real-World Demands of Heavy-Duty Driving

If you're pushing your GM 2500HD or 3500HD to work harder, tow heavier, or deliver more power, then you already know how important it is to reinforce the parts that keep your transmission alive. The SunCoast A1-BC2 Billet C2 Clutch Hub is built with that exact mindset. Whether you're hauling equipment, towing a fifth-wheel trailer, or running a high-performance diesel tune, this clutch hub is designed to take the kind of abuse that would shred a factory component. It's made from precision-machined billet steel, which gives it the strength and stability needed to survive under extreme pressure and heat. That added strength isn’t just for show—it means smoother engagement, better longevity, and more peace of mind every time you put your foot down.

A Smarter, Stronger Upgrade from a Trusted Name

What sets SunCoast apart is their dedication to actually listening to real drivers, taking feedback from the transmission world, and turning it into better engineering. This billet C2 clutch hub isn’t just a stronger version of the stock part—it’s a well-thought-out upgrade that improves clutch engagement and reduces internal wear over time. It’s fully compatible with Allison 1000 and 2000 series transmissions, and it fits directly into 2004–2019 Silverado and Sierra HD models without any guesswork. If you’re building a truck for serious towing, heavy-duty work, or tuned performance, this hub is one of those quiet upgrades that makes a real difference behind the scenes. Backed by SunCoast’s reputation for innovation and quality, it’s a smart investment for any high-torque GM build.

Fits: 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 GM Silverado/Sierra 2500HD/3500HD