Billet Input Shaft

Features:

• 50% stronger than OEM input shaft
• Built from 9310 Vacumelt steel
• Heat treated for added strength
• Handles over 1,800 ft/lbs of torque
• Ideal for heavy duty applications
• Larger spline radius for durability
• Precision ground for perfect fitment
• Designed for high horsepower builds
• Excellent upgrade for towing and racing
• Compatible with 2001-2010 GM Duramax

Built To Handle What Your Duramax Can Dish Out

When you're pushing your Duramax to the edge, you need components that won't back down. The SunCoast A1-109600 Billet Input Shaft is the upgrade serious drivers rely on to keep their builds alive under high stress. Whether you're laying down big power at the track or hauling heavy loads up steep grades, this input shaft is designed to take it all in stride. It's a game-changer for anyone tired of worrying about broken shafts under hard throttle or high torque demands. Engineered to outperform the factory part by a wide margin, it’s been tested to withstand over 1,800 ft/lbs of torque without flinching. This upgrade isn't just about brute strength, it’s about peace of mind when you’re deep into a build or halfway through a hard day’s work. If you’re building for more power, this shaft needs to be on your shortlist.

Precision Meets Power Where It Matters Most

The SunCoast A1-109600 Billet Input Shaft is a precisely engineered performance component made from premium 9310 Vacumelt steel. It undergoes a meticulous heat treatment process to ensure exceptional torsional strength, which is critical when transferring power from high-output diesel engines. The shaft features a precision-ground finish on all critical diameters, offering superior fitment and reduced wear in high-stress environments. A larger-than-stock radius at the turbine spline increases durability by eliminating a common failure point found in OEM shafts. This shaft is purpose-built for use in 2001-2010 GM 6.6L Duramax transmissions and is ideal for customers with heavy-duty service applications or performance-focused builds. With its 50% increase in strength over stock and verified resistance to extreme torque loads, it’s the perfect foundation for any serious drivetrain upgrade.

Fits: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Notes:

• Designed for 2001-2010 GM 6.6L Duramax applications
• Manufactured from 9310 Vacumelt steel for superior strength
• Tested to handle over 1,800 ft/lbs of torque
• Ideal for high horsepower and heavy-duty builds
• Precision ground for consistent dimensional accuracy
• Heat treated to enhance torsional strength and durability
• 50% stronger than the OEM input shaft
• Features a larger turbine spline radius for added reliability
• Recommended for competition, towing, and performance applications
• Not a cosmetic upgrade, built for serious mechanical reinforcement