Merchant Automotive has a long history of building transmissions for customers from all over the country who depend on their truck for many types of applications. The components in the Maximum transmission kits were selected specifically based on our experience working exclusively on the GM Duramax trucks with an Allison transmission.
Designed to optimize the potential of the Allison transmission even with additional power. We take the proven reliability of the Work Series and increase capacity even more with additional clutch apply area, heavy duty friction material, and additional hydraulic pressure to ensure Maximum holding capacity.
For use with engines modified above stock, or aftermarket components (proper tuning and gearing required). Includes everything you need to not only upgrade the transmission, but rebuild it as well. A truly complete kit to get you back on the road worry free.
C1-C5 frictions with improved material and increased apply area
LML pistons and springs decreases deflection of C3 apply plate
Hydraulic improvements to increase and maintain line pressure which increase clutch pack clamping force and improves converter holding power.
Complete gasket and seal kit
All new genuine Allison Torrington bearings
Select bushings common for wear
Deep pan (increases capacity)
Allison spin on filter
New style deep pan filter with increased filtration capacity and lower flow restriction
Filter lock to ensure filter maintains seal preventing leaks and pressure loss
Genuine Allison Pressure Switch, latest design for maximum durability
Wire harness connector body and seal to repair common issues and prevent leaks
Pressure Regulator Spring Service Tool
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Transfer MORE POWER to the ground with improved torque efficiency
Fully furnace brazed pump and turbine assemble\Steel drive splines
Heavy Duty Torrington enclosed needle bearings
Lower operating transmission temperatures
Numerous stall speed combinations available to best suit your vehicle and driving habits
Single disc lock-up design using Raybestos clutch linings
Increase fuel mileage 1 to 3 mpg in most cases
Billet steel front cover
MAximum Valve Body
MAximum Valve Bodies are disassembled and ultrasonic cleaned to remove all debris.
Upgraded to support increased line pressure.
Improvements for smoother apply into Drive from Park or Reverse.
New Genuine Allison Pressure Switch.
New Genuine Allison Wire Harness.
Dyno tested to ensure quality control standards
Billet C2 Hub
Install this new billet steel clutch hub to address the failure of the stock C-2 clutch hub in high torque/horsepower applications
Machined P1 Sun Gear included with Bilet C2 Hub add on.
•Made from 4140 HTSR billet steel.
•Spline is lengthened .125" for more contact, plus a spline boss diameter increase of .100" for added strength.
•No weight penalty for strength. The TCS hub is only 2.8oz. heavier than the O.E.M. part.