Allison 1000 Billet Intermediate Shafts

The stock intermediate shaft inside your Duramax Silverado or Sierra's Allison 1000 transmission has to deal with a ton of load and shock from shifting, even on a bone-stock truck. When you add a bunch of power to your Duramax truck, things can get bad for the stock intermediate shaft real quick which can lunch your Duramax's entire transmission. Tier One's Allison billet intermediate shafts can handle huge amounts of power, letting you stack immensely powerful tunes, turbo upgrades, oversized fuel injectors, fuel pump upgrades, and almost anything else you have in mind. These billet intermediate shafts for Allison transmissions are CNC-machined out of ultra-strong billet steel allowing them to deal with huge torsional forces and shock loads without cracking, stripping their splines, or completely breaking. Make sure you also check out our Allison Billet Clutch Hubs or our Allison Billet Output Shafts!