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The John B.M. T-1200DB Dirt Boss is a twelve-ton dump trailer with a reinforced steel floor, formed sides, and a hydraulic tailgate. Dual double-acting cylinders operate the box, and the tailgate's grain door provides a separate opening for free-flowing material.
The standard running gear uses highway-service tires and eight-bolt hubs. A swivel hitch, safety chains, and a drop-leg jack are included.
| Specification | Details |
|---|---|
| Rated capacity | 12 tons |
| Box dimensions | 7 ft wide x 12 ft long x 24 in sides |
| Floor and sides | 1/4 in floor with 12 in cross-bracing; 3/16 in formed sides |
| Hydraulic cylinders | Dual 4 in x 27 in double-acting; hoses included |
| Tailgate | Hydraulic with grain door; opens 3 ft above the sides |
| Hitch | Swivel hitch |
| Jack | 8,000 lb drop-leg |
| Hubs and spindles | 6,500 lb, 8-bolt |
| Standard tires | 12.5L x 15, load range F highway service |
Tire options include 400/60 x 15.5 flotation tires, 425/65R22.5 used truck tires with 12,000-lb. hubs, and 500/50 x 17 flotation tires. The tire and hub package should be selected for the ground conditions and hauling you expect.
Available through Keast Enterprises in Iowa, Kansas, Nebraska, Michigan, Colorado, Illinois, New Mexico, Oklahoma, Texas, and Arkansas.
Pay by card at checkout, or choose Reserve for $0. We’ll confirm the product, selected options, availability, taxes, and pickup or delivery. Reservations are held for 7 days.
After confirmation, you can arrange payment by check, ACH or wire transfer, or discuss financing. Financing may be available when at least $5,000 of qualifying equipment is financed, subject to credit and underwriting approval.
We ship parts and equipment nationwide by parcel or freight. Pickup is available at our Henderson, Iowa store. We’ll confirm timing and the fulfillment plan with you before your order is released.
Talk with our equipment and parts team before you order. We can help compare models, explain the listed configuration, or review a part number with you.
Our Henderson, Iowa team includes dedicated parts and warranty staff. If you need a replacement part or help with a manufacturer warranty question, contact us with the model and serial number of your equipment.
Call 712-566-1033 or use the specialist button above. Meet our support team.

Family owned in Henderson, Iowa
“Excellent service before and after the sale, very knowledgeable about the products they offer.”
Family-owned since 1980
The Keast family's farming roots in Southwest Iowa reach back to the 1870s, when Thomas Keast settled near Macedonia. Russ began selling equipment on the family farm in 1980, bringing firsthand experience and a practical understanding of how machinery needs to perform in the field. Today, Keast Enterprises serves customers across the country, with the same dedication to fair prices, dependable support, and quality products.
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Product details, availability, and features may change. Contact us if you need us to confirm any detail before ordering.