Team Wieland Truck & Trailer

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2024 Allison Transmission® Specialty Series™ 2550 SP

This is the real world, where performance is the only thing that matters. That’s why we design every Allison transmission to succeed in the harshest conditions, where and when it matters most. When you’re under pressure on the highway, dirt road or no road at all, Allison Transmission’s Specialty Series™ fully automatic transmissions are built to meet the challenge every time.

Allison Specialty Series transmissions provide extended torque range, higher gross vehicle weight (GVW) capacity and advanced electronic controls to get the most performance out of higher horsepower engines while putting more control into your hands and the wheels.