If you are someone that likes to work on your GMC or Chevy truck, then our rebuild kits are ideal for you. Next Gen Diesel offers 2020 Allison transmission rebuild kits that are designed for diesel GMC and Chevy trucks. We offer various models of rebuild kits, which are compatible with different transmissions. Our inventory includes competition, street, superstock, and Allison ultimate rebuild kits. If you are looking to get the most out of your transmission once it is fixed up, opt for the competition model. The parts in this kit are compatible with engines up to 1,500 HP. The 2020 Allison transmission rebuild kits include everything you’ll need to get the job done. You’ll find Billet input and output shafts, triple disk Billet converters, clutches, sun gear, flex plates, wiring harness, and much more.
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