PPE 128021000 Billet Output Shaft | 2001-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Features:

• Built for high-performance transmission builds
• Handles over 800 rear-wheel horsepower
• Ideal for towing and racing applications
• Eliminates common Allison output shaft failures
• Compatible with PPE Stage4–Stage6 kits
• Designed for 2001–2010 6.6L Duramax models
• Precision-machined billet steel construction
• Increases transmission reliability and durability
• Great for drag racing or sled pulling use
• Direct replacement for OEM output shaft
• Helps prevent drivetrain failure under stress
• Supports long-term heavy-duty transmission use

Build Your Transmission To Handle Real Power

If you're pushing serious horsepower through your Allison transmission, your stock output shaft is living on borrowed time. Whether you're hauling heavy loads, launching at the strip, or laying down big numbers on the dyno, the PPE Billet Output Shaft is the kind of upgrade that makes the difference between lasting power and catastrophic failure. This shaft is built to withstand the stress that comes with over 800 rear-wheel horsepower, making it an absolute must for high-performance or competition use. Designed for durability and precision, it’s the same shaft PPE includes in their trusted Stage4 through Stage6 transmission kits. You don’t need to wait for something to break, this is a proactive investment in your truck’s long-term strength. It's also a solid insurance policy for daily-driven builds that see regular towing or worksite demands. If you're serious about putting your Duramax to work, this is the part that lets you run hard without holding back.

Engineered For High Strength And Long Term Durability

The PPE 128021000 Billet Output Shaft is designed to eliminate a well-known failure point in the Allison transmission, especially in trucks generating extreme power or used in demanding environments. Crafted from billet steel and precision-machined to exact tolerances, this shaft offers unmatched resistance to twisting and fatigue under high torque loads. It is tested and proven to support applications exceeding 800 rear-wheel horsepower, making it an ideal choice for race builds, sled pulling, or heavy towing. This component is a direct replacement for the factory output shaft, offering straightforward integration without the need for excessive modification. It's also highly recommended when installing PPE’s Stage4, Stage5, or Stage6 transmission kits, where reliability under load is non-negotiable. The design balances strength and longevity to ensure consistent performance in both daily-driven and competition-focused trucks. For builders looking to fortify their drivetrain from the inside out, this billet output shaft is a critical piece of the puzzle.

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 2500HD/3500HD with 6.6L Duramax
• Replaces factory Allison transmission output shaft
• Recommended for use with PPE Stage4, Stage5, and Stage6 kits
• Supports power levels exceeding 800 rear-wheel horsepower
• Ideal for racing, sled pulling, and heavy-duty towing
• Helps prevent common output shaft failures under stress
• Machined from high-strength billet steel for durability
• Direct-fit installation with no custom modifications needed
• Not required for stock or lightly modified trucks
• Critical upgrade for high-performance transmission builds