Product Description
CPP Hardened Gear Extreme Duty NV5600 Transmission
The NV5600 has earned a reputation as one of the strongest manual transmissions ever installed in a Dodge Ram, but today's high-horsepower Cummins trucks demand even more. For over 16 years, CPP Diesel has been building Extreme Duty NV5600 transmissions featuring CPP Hardened Gear Technology for customers who expect exceptional durability under real-world diesel truck use.
Every CPP Hardened Gear Extreme Duty NV5600 is built to order using premium internal components, carefully inspected hard parts, and our proprietary hardened gear process. The result is a transmission engineered for heavy towing, commercial work, performance street trucks, sled pulling, and demanding diesel enthusiasts who refuse to settle for an ordinary rebuild.
Why Choose a CPP Hardened Gear NV5600?
- CPP Hardened Gear Technology
- Built to order by experienced transmission builders
- Over 16 years of proven real-world performance
- Designed for high-torque Cummins applications
- Premium synchronizers, bearings, seals, and wear components
- Excellent for towing, work trucks, street performance, and competition builds
- Backed by a 3-year warranty
Built for High-Torque Cummins Trucks
Although the factory NV5600 is an exceptionally capable transmission, many modern Cummins trucks now produce substantially more torque than they did when these transmissions were originally designed. Larger turbochargers, upgraded injectors, aggressive tuning, heavy-duty clutches, oversized tires, and frequent towing place enormous loads on the drivetrain.
CPP Hardened Gear Technology helps prepare the transmission for the demanding conditions experienced by today's modified diesel trucks.
The CPP Difference
Anyone can rebuild an NV5600 with replacement parts. CPP Diesel takes a different approach by building every transmission around durability, consistency, and long-term reliability. Our hardened gear process has been refined over more than 16 years and continues to be trusted by diesel owners across North America.
Every transmission is assembled one at a time by experienced builders who understand what high-performance Cummins trucks require.
Designed For
- Heavy towing
- Commercial work trucks
- Daily drivers
- Street performance trucks
- High-horsepower Cummins builds
- Sled pulling and competition applications
Built to Order
Every CPP Hardened Gear Extreme Duty NV5600 is assembled to order and configured for your application. Before ordering, contact CPP Diesel to discuss your horsepower goals, clutch selection, tire size, towing requirements, and intended use so we can recommend the best transmission for your build.
Complete Your Drivetrain Build
Pair your transmission with a premium clutch, upgraded hydraulics, drivetrain components, and Cummins performance upgrades from CPP Diesel to build a drivetrain engineered for years of dependable service.
Warranty Information
3 YEAR UNLIMITED MILESProduct Videos
Custom Field
Product Reviews
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extreme nv5600
I have only had the transmission in my truck for a few weeks but I am VERY pleased with it's performance
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Great replacment for the Higher HP guys
On a spirited drive I stripped 5th gear and snapped the input shaft on my stock NV5600. After looking at my options to rebuild or buy a reman I came across CPP's option. I regularly hook up to the Sled in the summer time and after talking to Jamie I was convinced that the warranty and price of a new transmission was well worth it. Swapping the old transmission for the new was a chore at almost 400lbs per transmission. It took CPP about 3 weeks to get the transmission from time of purchase to pick up, but with a snow storm in between I saw no issue with that. The new CPP Extreme NV5600 shifts smooth and quiet through all the gears. I have only put 3,000 miles on it but like what I see so far.
