Duramax 2001-2007 Stage 2 Daily Driver Clutch Kit – South Bend Clutch K04201-HD-TZ

Upgrade your 2001-2007 Duramax LB7, LLY, or LBZ with the ZF S6-650 6-speed manual using this premium South Bend Clutch Stage 2 Daily Driver ("Sport" series) kit. It bridges the gap between stock reliability and serious performance capability, delivering stronger torque holding power while preserving smooth, stock-like drivability for daily use, aggressive street driving, moderate modifications, and occasional towing or spirited runs.

Why Choose the Stage 2 Daily Driver?

South Bend’s heavy-duty pressure plate provides increased clamp load for significantly better holding capacity with little to no increase in pedal effort. The full-face Kevlar® disc offers nearly double the friction coefficient of stock organic material, superior heat resistance, and excellent durability under load — all while maintaining smooth, predictable engagement and minimizing chatter.

This single-disc design is the ideal “step-up” clutch for daily-driven Duramax trucks that need more strength than stock without jumping straight to aggressive dual-disc or competition clutches.

Key Features & Benefits

• Kevlar Full-Face Disc — Superior thermal resistance and friction for enhanced torque capacity and longevity
• Heavy-Duty Pressure Plate — Increased clamp load with near-stock pedal feel
• Sprung Hub Design — Smooth engagement, reduced vibration, and refined street manners
• Excellent Heat Management — Handles towing, performance driving, and repeated use far better than stock
• Precision Fit & Quality — Direct-fit components engineered for the ZF S6-650 transmission

What’s Included

• Heavy-duty diaphragm pressure plate
• Kevlar full-face disc
• Throw-out bearing (standard style)
• Steel pilot bushing
• Alignment tool

Flywheel not included (reuse your existing unit or upgrade to a single-mass flywheel for best results with performance clutches).

Technical Specifications

• Clutch Usage: Performance / Stage 2 Daily Driver
• Disc Material: Kevlar®
• Disc Diameter: 12" (305 mm)
• Input Spline: 10-spline, 1.130"
• Hub Style: Sprung
• Pressure Plate Style: Diaphragm, heavy-duty
• Includes: Throwout bearing, pilot bushing, alignment tool

Fitment

2001-2007 Chevrolet Silverado / GMC Sierra Duramax (LB7 | LLY | LBZ) equipped with the ZF S6-650 6-speed manual transmission.

Note: Professional installation is strongly recommended. For optimal pedal feel and clutch disengagement on Duramax ZF6 applications, many owners also upgrade to South Bend’s heavy-duty hydraulic assembly (HYDX-MAX).

This South Bend Clutch kit gives your Duramax the strength it needs for real-world use while keeping daily drivability intact. Built to South Bend’s exacting standards, it’s a proven, reliable upgrade for work trucks, tow rigs, and performance-minded Duramax owners.