Paragould, Arkansas USA – Allen Engineering is setting a new standard with the all new HDX805 Ride-On Trowel, also known as the Slab Boss. The largest ride-on trowel the company has ever produced. Engineered for large-slab concrete finishing, the HDX805 delivers increased productivity, improved control, and enhanced operator safety on the job site.
The HDX805 features a user friendly control system, anchored by a 10-inch touchscreen display that provides clear, intuitive machine information. To improve visibility and awareness, the Slab Boss is equipped with 360-degree cameras and object detection sensors, helping operators navigate busy pours with confidence.
Featuring two finishing modes, a Dynamic mode for smooth panning and a Normal mode for controlled burnishing, along with three steering sensitivity modes that allow operators to tailor machine response to their preference, the HDX805 helps ensure consistent, high-quality results across large concrete surfaces.

Key Features Include:
- 10-inch touchscreen display with simplified controls
- Cruise control option
- Object detection sensors
- 360° camera system for enhanced visibility
- Three steering sensitivity modes
- New lower end design with improved heavy-duty spider and yoke
Allen Engineering Corporation (AEC), based in Paragould, Arkansas, is a family-owned manufacturer of high-performance concrete finishing equipment, supported by a global dealer and rental network.











































