Product Description
Extreme Allison Performance Starts with ATS Stage 6
The ATS 313-906-4290 Allison Stage 6 Rebuild Kit is engineered for serious diesel performance enthusiasts who demand maximum strength, durability, and holding power from their transmission. Designed specifically for 2004.5–2005 6.6L Duramax applications, this kit transforms your Allison transmission into a high-performance unit capable of handling extreme torque and towing loads.
Unlike standard rebuild kits, the ATS Stage 6 package is built for high horsepower and heavy-duty use. It includes upgraded internal components designed to improve clutch holding capacity, reduce slippage, and maintain consistent performance under extreme stress.
Whether you're building a competition truck, towing heavy loads, or pushing higher horsepower levels, this Stage 6 rebuild kit provides the strength and reliability needed to keep your Allison transmission performing at its peak.
Key Features:
- Stage 6 performance rebuild kit for Allison transmissions
- Designed for high horsepower and extreme torque applications
- Improves clutch holding capacity and reduces slippage
- Ideal for towing, racing, and heavy-duty diesel use
- High-performance ATS internal components
- Built for Allison 1000 series transmissions
FAQ
What makes a Stage 6 rebuild kit different?
Stage 6 kits include upgraded performance components designed to handle significantly higher power levels compared to standard rebuild kits.
Is this kit for stock trucks?
It can be used on stock trucks, but it is specifically designed for high-performance, towing, and modified applications.
What transmission does this fit?
It fits Allison 1000 transmissions found in 2004.5–2005 6.6L Duramax trucks.
Do I need professional installation?
Yes, installation requires full transmission disassembly and is recommended for experienced builders or professional shops.
Fitment:
- 2004.5–2005 Chevrolet Silverado 2500HD / 3500HD
- 2004.5–2005 GMC Sierra 2500HD / 3500HD
- 6.6L Duramax Diesel Engine (LLY)
- Allison 1000 Automatic Transmission
Note: Always verify fitment based on your exact vehicle configuration.
Specifications for ATS 313-906-4290
| ATS 313-906-4290 Product Specifications | |
|---|---|
| Part Number | 313-906-4290 |
| Brand | ATS Diesel Performance |
| Product Type | Allison Stage 6 Rebuild Kit |
| Transmission Compatibility | Allison 1000 Series |
| Engine Compatibility | 6.6L Duramax (LLY) |
| Vehicle Fitment | 2004.5–2005 Silverado / Sierra 2500HD & 3500HD |
| UPC | 840440597650 |
| GTIN | 840440597650 |
| Shipping Weight | Approx. 35 lbs |
| Shipping Dimensions | Approx. 18" x 14" x 10" |
| Core Charge | yes |
| California Prop 65 | WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov |