Description
Stage 2 Allison Transmission for Chevy & GMC Duramax Pickups

Ultimate Transmission for Towing and Hauling

The Stage 2 Allison 1000 transmission is perfect for truck owners who rely on their vehicle to pull heavy loads and trailers without compromising performance. Whether you’re towing a horse trailer through mountain roads or hauling a fully-loaded RV cross-country, this transmission is engineered to hold up under pressure while giving you the smooth, controlled power you need.

Performance-Driven Design

Our Stage 2 Allison transmission isn’t just about durability; it’s about delivering power smoothly and efficiently under pressure. Equipped with custom-machined pressure plates and the LML style pistons and return springs, it brings cutting-edge engineering to ensure flawless performance.

Key Features:

Raybestos or ALTO G3 C-3 C-4 Torque Kit with Custom Machined Pressure Plates: Provides maximum holding power and improved durability under high-torque conditions, ensuring your transmission doesn’t slip when you need it most.
LML Style Pistons and Return Springs: Delivers improved reliability and faster shifts, helping maintain performance even under extreme stress.
Raybestos or ALTO G3 C-1, C-2 Torque Kit: These premium clutches offer increased capacity and holding power, perfect for high-performance applications.
Ratio Tek Pressure Upgrades: Optimizes internal pressure for more efficient power transfer and enhanced reliability during heavy use.
Transgo Trim Valves: Helps regulate fluid pressure and improve overall transmission performance, making shifts more precise and reducing wear.
New Torrington Bearings: High-performance bearings are installed to reduce friction, extend transmission life, and improve overall efficiency.
Randy’s Torque Converter with Billet Stator: Our custom billet torque converter is built for durability and improved torque transfer, offering maximum performance and efficiency under load.
New OE Filters: Ensures clean fluid flows through your transmission, reducing internal wear and extending the life of your components.
Heavy Duty Cast Aluminum Deep Pan: Provides extra fluid capacity for better cooling, especially under high-stress towing conditions.
Custom Billet PTO Covers: These billet covers are designed to direct fluid more efficiently.
Why Choose Randy’s Transmissions?

At Randy’s, we put each of our builds through rigorous testing to ensure you get a transmission that not only performs but lasts. Our Stage 2 Allison transmission has been crafted with precision and care to give you peace of mind whether you’re towing a fifth wheel or taking a heavy load across country.

Backed by Years of Research

Randy’s Transmissions has spent years perfecting the art of building the strongest transmissions for Duramax owners. Our commitment to research and development ensures that every product we deliver is built to exceed expectations.

Buy Now, Pay Later

We know that upgrading your transmission is a big investment and paying all at once can be tough. That’s why we’ve teamed up with Affirm to make it easier for you. With our financing options, you can enjoy the benefits of a top-quality transmission without the stress of a hefty upfront payment. Available exclusively online, just choose Affirm at checkout and spread your payments out over time. Get the performance you need today, and pay at a pace that fits your budget.

2 Year / Unlimited Mile Warranty

When you choose Randy’s Stage 2 Allison Transmission, you’re backed by confidence and reliability. We stand behind our product with a 2-year, unlimited mile warranty, ensuring your transmission performs at its best—no matter how hard you push it. Whether you’re towing heavy loads or running at high power, rest easy knowing that our warranty has you covered. We’re committed to providing long-term durability and peace of mind with every build.

Refresh Program

At Randy’s, we believe in long-term relationships, not just one-time transactions. That’s why our Refresh Program is here to support you even after your warranty expires. When your transmission needs a little TLC, we’ll give it a thorough rebuild at a fraction of the cost of a new unit. It’s our way of showing our commitment to your vehicle’s performance and your satisfaction. Please remember, this program is available only to the original owner and is non-transferable. With Randy’s, you’re not just buying a transmission; you’re investing in lasting peace of mind and continued excellence on the road.