Maximum-duty quad pump automatic leveling for Class-8 semi-truck chassis conversions. 17,000 lb capacity per jack with 20" stroke, lifetime cylinder warranty, and 356 lb complete system.
The Bigfoot AKQ-QEII26 is Quadra Manufacturing's most powerful automatic leveling solution, engineered specifically for the extreme demands of Class-8 semi-truck chassis conversions. Whether you're outfitting a luxury bus conversion, a heavy hauler RV, or a specialty vehicle on a Class-8 platform, this system delivers one-touch automatic leveling with the muscle to handle the heaviest applications in the Bigfoot lineup. Four QEII-26 cylinders rated at 17,000 lbs each—machined at Quadra's Michigan facility, hand-assembled, and 100% leak tested—provide 68,000 lbs of combined lifting capacity with a massive 20" stroke for tackling even the most extreme terrain.
Like all Bigfoot quad pump systems, the AKQ-QEII26 places an individual marine-grade power unit at each corner of the vehicle. Each pump operates only 25% of the time compared to traditional central pump systems, delivering nearly four times the service life and dramatically reducing maintenance over the life of your vehicle. The weatherproof steel housings allow all four power units to be mounted outside in the elements—protecting your investment from road spray while preserving every cubic inch of interior storage space. At 356 lbs complete, this is a heavy-duty system designed for serious applications, built in White Pigeon, Michigan with 100% American-made components, and backed by Bigfoot's industry-leading lifetime cylinder warranty.
Highest-capacity Bigfoot cylinder for Class-8 semi and heavy duty chassis applications
Single button press fully levels your heavy-duty Class-8 conversion automatically
Quad pump design runs each unit only 25% of the time for maximum longevity
QEII-26 cylinders machined in Michigan, 100% leak tested, lifetime warranty
This system is engineered for the heaviest-duty chassis applications in the Bigfoot lineup: Compatible Chassis Types: • Class-8 Semi-Truck Chassis Conversions • Heavy Duty Bus Conversions (Skoolie/Bus Conversions) • Luxury Motor Coach Builds on Class-8 Platforms • Specialty Heavy-Duty Vehicle Conversions • Custom Hauler Builds on Semi-Truck Chassis • Any Class-8 Application Requiring Maximum Lift Capacity Cylinder Model: The QEII-26 is Bigfoot's heaviest-duty cylinder, offering 17,000 lbs of lifting capacity per jack with a 20" stroke—significantly more than the QEII-24 (17K / 18" stroke) used in Class A diesel pusher systems, providing additional reach for taller chassis ride heights. Not Sure If This Is the Right System? Call us at 1-866-332-7881 and we'll help you select the correct system for your specific chassis and application.
This system requires expert installation involving drilling or welding to the chassis frame: Installation Requirements: • Drilling or welding expertise for frame bracket mounting • Removal of any existing leveling system or frame brackets • Heavy-duty hydraulic system knowledge and bleeding procedures • Electrical wiring and control panel installation • Frame load and reinforcement assessment • Proper torque specifications for all safety-critical fasteners Due to the size and weight of this system (356 lbs), professional installation is strongly recommended. Improper installation on a Class-8 chassis can create serious safety risks. Quadra Manufacturing offers factory installation at their White Pigeon, Michigan facility with amenities including free overnight parking, 30-amp hookup, WiFi, handicap-accessible lounge, restrooms, and pet-friendly facilities. Veteran discounts available.
Hydraulic Cylinders: • (4) QEII-26 Cylinders (17,000 lb Each) • (4) 100 Square Inch Bigfoot Landing Pads Power Units: • (4) Marine-Grade Hydraulic Power Units • (4) Weatherproof Steel Housings • (4) American-Made Pumps & Motors Mounting Hardware: • Class-8 Chassis Mounting Brackets • All Required Frame Hardware Hydraulic Components: • Complete Hydraulic Hose Kit • Hydraulic Fittings & Connections • Reservoir & Hydraulic Fluid Electrical & Controls: • Control Panel with Auto/Manual Modes • Complete Wiring Harness • All-Up Warning System • Emergency Retract Controls Documentation: • Installation Instructions • Wiring Diagrams • Owner's Manual • Warranty InformationDownload the Bigfoot Leveling Systems Installation Manual
Factory Installation Available in White Pigeon, Michigan: Quadra Manufacturing (Bigfoot) offers professional installation at their facility with the following amenities while you wait: • Free Overnight Parking • Free 30-Amp Electrical Hookup • Free WiFi Access • Handicap-Accessible Customer Lounge • Handicap-Accessible Restrooms • Pet-Friendly Facilities • Veteran Discounts Available How to Schedule Factory Installation: 1. Purchase the Bigfoot Installation Package 2. Call Bigfoot at 1-800-752-9815 to schedule your appointment Due to the complexity of Class-8 chassis installations, installation time may vary. Call ahead to discuss your specific chassis and application requirements.
The AKQ-QEII26 uses Bigfoot's largest cylinder for maximum lift and stroke on Class-8 platforms. Here's how it compares to other heavy-duty Bigfoot systems:
The AKQ-QEII26 and AKQ-DPA1 share the same 17,000 lb cylinder capacity, but the QEII26's 20" stroke provides 2 additional inches of travel—important for Class-8 chassis that sit higher off the ground than typical diesel pushers. Not sure which system is right for your chassis? Call us at 1-866-332-7881.
On a Class-8 chassis, long-term reliability is paramount. The quad pump design's dramatically extended service life and outdoor-mountable power units make it the only logical choice for heavy-duty semi-truck conversions where downtime is not an option.
Quadra Manufacturing (Bigfoot Leveling Systems): Phone: 1-800-752-9815 Installation Scheduling, Sales & Technical Support