48RE Transmission Stage 3 1,000HP Rated

Randy’s Stage 3 48RE Transmission – Built for Enthusiasts and Competitors - 1,000HP Rated

For those who demand the ultimate in strength and performance, Randy’s Stage 3 48RE transmission for the 2003-2007 Dodge Ram with the 5.9 Common Rail Cummins delivers unparalleled capability. Designed for the enthusiast who tows but also loves to push their truck to the limits on the race track, this transmission represents our relentless drive to provide the strongest, most reliable transmissions on the market.

Transmission Specs:

 • XHD Series Quad Disc Converter: Available in two stalls—Stock (Tow/Daily 1800-2000 RPM) for heavy-duty use or High (Street/Track 2400-2600 RPM) for high-performance driving.
 • Alto G3 Clutches and Steels: Exclusive to Randy’s, these G3 components are renowned for their strength and durability, providing exceptional holding power under high torque.
 • Alto G3 Power-Packed Overdrive with Custom Pressure Plate: Reinforced for added durability, ensuring strong engagement under intense loads.
 • Alto G3 Power-Packed Direct Drum with Custom Pressure Plate: Enhances holding capacity and durability, perfect for high-performance applications.
 • Sonnax Super Servo, Billet Band Strut, Billet Wedge: Strengthens the shifting components for precise control and long-term reliability.
 • “Baby Daddy” High Pressure Valve Body: Custom-built and tested in-house, this high-pressure valve body provides firmer shifts and enhanced clutch engagement.
 • Billet Accumulator: Ensures consistent pressure and longevity in high-demand situations.
 • Billet 4.2 Lever: Enhances transmission strength and precision under heavy load.
 • Sonnax Billet Input Shaft (Oversized): Built to handle increased power and torque, preventing breakage even under extreme conditions.
 • Ridged 2nd Gear Band: Ensures consistent performance and durability during heavy towing or high-performance driving.
 • Heavy Duty Direct Drum Piston: Engineered for greater durability.
 • Borg Warner Governor Pressure Solenoid: Maintains precise pressure control for optimized shifting and performance.
 • High Pressure Transducer: Monitors and regulates transmission pressure to ensure smooth, efficient operation.
 • HD Cast Aluminum Deep Pan: Increases fluid capacity for improved cooling and transmission longevity.
 • Billet Intermediate Shaft: Designed for superior strength and reliability under extreme torque.
 • Billet Output Shaft: Handles immense power without sacrificing durability.
 • PTFE Coated Thrust Washers: Reduces friction for extended durability and longevity.

Featuring Alto G3 Clutches & Steels 

The Alto G3 line has a long-standing reputation for its strength and reliability in transmission builds. Developed to withstand extreme demands, G3 frictions have become the gold standard for builders who demand durability and consistent performance.

Recognizing the need for a tough, long-lasting transmission solution, we teamed up with Alto to bring a full clutch and steel lineup specifically designed for the 47RE & 48RE. Built with the same trusted G3 technology, this lineup offers unmatched resilience, ensuring your transmission can handle anything you throw at it—whether it’s the heavy demands of towing or the rigors of track racing.

This collaboration between Randy’s and Alto guarantees that your 48RE gets the best in performance, tested and proven under real-world conditions.

Backed by Real-World Testing and Proven Expertise

Since 2008, we have mastered the 48RE transmission. Through years of hands-on experience, we’ve fine-tuned our builds to deliver unmatched durability and performance. When it comes to the 48RE, nobody else comes close.

Our very own Red Delicious (2006 Cummins Dually) started with stock power, but out of a desire to find and eliminate every weak point, we steadily increased its power. Each stage of development allowed us to identify and address vulnerabilities, resulting in a transmission built to withstand anything you can throw at it. Our real-world testing ensures that every transmission we produce is battle-tested and ready for the road or track

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.

Why Choose Randy’s Stage 3 48RE?

The Stage 3 48RE is more than just a transmission; it's a testament to our commitment to delivering exceptional quality and performance. Every component has been meticulously tested to ensure it meets our rigorous standards. Whether you're towing a heavy load or racing on the track, this transmission is built to withstand and excel under the most demanding conditions.

At Randy’s, we stand by our products and take pride in the rigorous testing we perform. Choose the Stage 3 48RE for a transmission that combines strength, reliability, and performance, giving you confidence whether you're on the road or the track.

1-Year / 12,000-Mile Warranty

Randy’s Transmissions is committed to excellence and reliability. That’s why we offer a 1-year, 12,000-mile warranty on our products. This warranty ensures that you can drive with confidence, knowing that if any issues arise within the coverage period, our team is ready to support you. Our warranty is a testament to the high standards of quality and durability that define our transmissions, giving you peace of mind and a reliable partner on the road.

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.