Allison 1000 Billet Flex Plates

The stock flex plate that sits between your truck's big Duramax diesel and Allison transmission can put up with a lot of stress, but when you turn up the power with aggressive tuning, big turbos, oversized injectors, and a full suite of bolt-on parts, the stock flex plate can let you and your Duramax truck down in often very violent ways. Tier One's selection of Allison billet flex plates are much stronger than stock, allowing you to take your Duramax to the next level of power, tow extremely heavy loads, or even rip down the track without a flex plate failure wrecking your day. Some of these billet flex plates for Allison transmissions are even SFI-approved for competition use, so that you can put together a race-ready Duramax that dominates your competition. Make sure you also check out our Allison Billet Input Shafts or our Allison Torque Converters!