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Central Power Systems & Services (CPS&S) is the only Authorized Allison Transmission distributor in Kansas, Western Missouri, and Northern Oklahoma. No one else is better trained, has more parts in inventory or stocks more new and rebuilt Allison Transmissions than CPS&S. Whether you need a new AT transmission for a school bus or medium duty truck, maintenance on a larger 3000 Series for an inter-city bus or you need an overhaul for a quarry truck, Central Power Systems & Services can meet all of your Allison needs.