Donkey 4K Series Forklift
The Lightest Ride-On Forklift in the Donkey Lineup
The 4K Series is an affordable, lightweight truck-mounted forklift with a 4,000 lb. capacity and speeds up to 15 mph. Designed for operators who need a versatile, fast ride-on unit without the weight or cost of a heavier machine.
Specs
| Model Number | Load Capacity | Max Speed | Max Gradeability | Operating Weight | Lift Height | Ground Clearance | Engine |
|---|---|---|---|---|---|---|---|
| 4K Series | 4,000 lbs | 15 mph | 32% | 3520 | 70" | 6" | 25hp Diesel |
| Model Number | Load Capacity |
|---|---|
| 4K Series | 4,000 lbs |
| Model Number | Max Speed |
|---|---|
| 4K Series | 15 mph |
| Model Number | Max Gradeability |
|---|---|
| 4K Series | 32% |
| Model Number | Operating Weight |
|---|---|
| 4K Series | 3520 |
| Model Number | Lift Height |
|---|---|
| 4K Series | 70" |
| Model Number | Ground Clearance |
|---|---|
| 4K Series | 6" |
| Model Number | Engine |
|---|---|
| 4K Series | 25hp Diesel |
Specifications
Capacity
4,000 lbs
Lift Height
70" standard (88", 96", and 120" available)
Top Speed
Up to 15 mph
Overview
The Donkey 4K Series is the lightest ride-on forklift in the Donkey lineup, built for operators who prioritize speed, maneuverability, and low weight without sacrificing capability. Powered by a Tier 4 compliant 25 HP Kubota diesel engine and a 6-speed GM transmission, the 4K handles standard deliveries and long hauls efficiently. Standard features include side shift, strobe light, smart backup alarm, and corrosion-resistant construction — making it a job-ready unit right off the truck. With the lowest ground pressure of any forklift on the market and centralized weight distribution, the 4K protects surfaces and stays stable in a wide range of operating conditions.
Performance
- 4,000 lb. load capacity with a standard 70″ lift height — taller mast options available up to 120″
- Speeds up to 15 mph for faster delivery on long hauls
- Scissor reach option available in 44″ or 56″ for both single and two-stage mast configurations
- 64″ standard load spacing (68″ available) accommodates a wide range of pallet sizes
- Lowest ground pressure of any forklift on the market minimizes surface damage on job sites and customer properties
Ergonomics
- Lightest ride-on unit in the Donkey lineup reduces truck payload impact
- Extension step option lowers for safer, easier entry and exit when truck mounted
- Sun shade option for all-day outdoor operator comfort
- Remote valve option allows mounting and unmounting from the ground without climbing on or off the unit
Safety Features
- Smart backup alarm and strobe light standard on every unit
- Corrosion-resistant features standard for long-term durability in harsh environments
- Remote valve option keeps operators safely on the ground during mount/unmount operations
- Centralized weight distribution improves stability across uneven or soft surfaces
Ease of Service
- Tier 4 compliant Kubota diesel engine — a proven, widely available platform with accessible parts
- 6-speed GM transmission simplifies service and parts sourcing
- Bio Oil option (water-based biodegradable hydraulic fluid) reduces liability on sensitive customer properties
- Summit Handling provides full parts and service support across New England
Options
Block Heater
110V plug-in engine block heater for reliable cold-weather starting
Custom Color
Paint matched to your fleet specifications with sample approval process
Bio Oil
Water-based biodegradable hydraulic fluid to protect customer driveways and sensitive surfaces
Lumber Guard
Moveable aluminum guards protect long product and reposition easily to avoid mount interference
Fork Positioner
Hydraulically adjust fork spacing from the operator seat without dismounting
Auxiliary Hydraulic Valve Kit
Powers a quick-connect auxiliary hydraulic implement from the operator position
Donkey Horn
Simulates a donkey braying in place of a standard horn; great for job site attention-getting
Donkey Glide
Nitrogen-charged accumulator tied to mast hydraulics to absorb load shock during travel
Dual Rear Axle
Unique feature designed for sod rolling and rotary sod layer applications
Extension Step
Lowers for safer operator entry and exit when the unit is truck mounted
Heavy Duty Tilt Cylinders and Rod Ends
Upgraded tilt components for demanding load applications
High Capacity Pump
Increases hydraulic output from 11 GPM to 15.8 GPM at 3,000 RPM (4-cylinder engines only)
Counter Weight
Available in 100 or 150 lb. options for improved load stability
Remote Valve
Allows full mount/unmount operation from the ground for enhanced operator safety
Sun Shade
Aluminum shade mounted to the operator compartment for outdoor comfort
50 HP Kubota Gasoline Engine
Higher-power engine option for more demanding applications
60" Headboard Width
Extended headboard for wider load handling (standard is 48")
Extended Mast Heights
88", 96", and 120" lift height options for high-stack applications
Third Wheel Drive
Available as an option for added traction on challenging terrain
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