2020up 10L1000 GM Allison Transmission ZeroFlex Billet E Clutch Hub RevMax

GM Allison 10L1000 Transmission

Billet E-Clutch Hub by RevMax

Fits 6.6L L5P Duramax Diesel Equipped Trucks:

2020–Current Chevrolet Silverado 2500 HD, 3500 HD pickups

2020–Current GMC Sierra 2500 HD, 3500 HD pickups

2020–Current Chevrolet Silverado 3500 HD chassis cabs

2020–Current GMC Sierra 3500 HD chassis cabs

per RevMax Engineers:

The new 10-speed Allison is a work of art. As a joint effort between GM and Ford, this engineering marvel is something from the future—extremely compact and lightweight for its torque capacity, yet packing 10 speeds!

As strong as this unit is in factory form, it still cannot tolerate elevated power levels for a long period of time. The first clutch to fail in these units is the E clutch. This clutch is used in most gear ranges including 1st, 3rd, 5th, 6th, 7th, 8th, and 9th gear. The factory clutch capacity leaves no additional torque margin. Initially, the clutch slips, heats the steels, and eventually warps them. Once warped, the steels gouge the aluminum apply hub and get stuck—leading to complete clutch failure and damage to the hub and other clutches.

The RevMax 10L1000 Billet E Clutch Hub is a patent-pending two-piece design. The splines that engage the main shaft and clutch hub teeth are made of billet 4140HTSR steel. The sealing surface for shaft-to-hub fitment is made of billet 6061-T6 aluminum. The steel hub resists gouging and spline stripping compared to the factory aluminum version.

In addition to strength upgrades, our design increases clutch capacity. The standard setup runs 6 frictions, adding 18% surface area. We also offer a 7-clutch design that adds over 33%. Best of all, we use OEM thickness steels and clutches—no thinner components that risk warping.

(2) Metal-Clad Seals (Torque Converter Hub, Driveshaft Yoke)

(2) Thrust Washers

(1) 3-piece Snap Ring Kit

Small Parts Kit