The Genie 1258355GT is a genuine OEM SL Proportional Upgrade Kit designed for Genie QS-series QuickStock mast lifts, including the QS-12W, QS-15W, and QS-20W, up to SN QS14-1999. This kit converts the machine's 2-speed lift system to proportional lift control, giving operators smoother, more precise elevation adjustments. As a genuine Genie OEM part, it is built to the exact specification required for a correct, complete conversion on compatible units.
Key Features
- Genuine OEM Engineering — Manufactured to Genie's exact specification, ensuring dimensional conformity and correct integration with the QS-series lift control system.
- 2-Speed to Proportional Lift Conversion — Upgrades the lift control from a fixed 2-speed system to proportional operation, delivering smoother and more controllable lift movement.
- Software Upgrade Required — A companion software upgrade is required to complete the conversion; it is available online or via USB flash drive (refer to 503.1 for the flash drive option).
- Confirmed Fitment — Compatible with the QS-12W, QS-15W, and QS-20W up to SN QS14-1999; cross-reference part number 1258355GT against your machine's parts manual before ordering.
- Operator Control Benefit — Proportional lift control allows finer positioning adjustments, improving load placement accuracy and overall operational efficiency on QuickStock lifts.
This upgrade kit replaces a stepped 2-speed lift control with proportional control, allowing the operator to modulate lift speed continuously rather than switching between two fixed speeds. The result is more precise platform positioning, which matters in stock-picking and material-handling applications where accurate placement is essential. A worn or incomplete conversion — or operating without the required software upgrade — leaves the machine running the original 2-speed behavior, so both the hardware kit and the software update must be applied together for the conversion to function correctly.
Part Details
| Part Number | 1258355GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | SL Proportional Upgrade Kit, AUS, QSW (2-Speed to Proportional Lift Conversion) |
Compatibility & Fitment
| Name | Models |
|---|---|
| QS-12W | QS-12W |
| QS-15W | QS-15W |
| QS-20W | QS-20W |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
