The Genie 1258341GT is a genuine OEM SL Proportional Upgrade Kit, ANSI, designed for the GRC-12 vertical mast lift. This kit converts the machine from 2-speed lift operation to proportional lift control, delivering smoother, more precise vertical movement for the operator. A software upgrade is required to complete the conversion and is available online or via USB flash drive (refer to service documentation 504.1). This kit applies to GRC-12 units up to serial number GRC14-1999.
Key Features
- Genuine OEM Components — Every part in this kit is sourced directly from Genie, ensuring dimensional conformity and full compatibility with the GRC-12 platform.
- Direct Conversion Kit — Purpose-built to upgrade 2-speed lift systems to proportional lift control on qualifying GRC-12 units, with no improvised fabrication required.
- Proportional Lift Control — Proportional lift response gives operators finer, more predictable vertical positioning compared to fixed 2-speed operation, improving accuracy at height.
- Serial Number Specific — Confirmed fitment for GRC-12 machines up to serial number GRC14-1999; verify your unit's serial number before ordering.
- Software Upgrade Required — The kit must be paired with the corresponding software update, available as a download or on USB flash drive (refer to 504.1), ensuring the control system and hardware work together correctly.
- Operational Safety — Upgrading lift control behavior on a personnel lift with the correct OEM kit helps ensure the machine responds as Genie intended, supporting safe operation at height.
On a GRC-12 vertical mast lift, the lift control system governs how smoothly and accurately the platform rises and lowers. A 2-speed system steps between fixed rates, which can make fine positioning more difficult. Converting to proportional lift control allows the operator to modulate platform speed continuously, improving placement precision. This upgrade kit, part number 1258341GT, provides the hardware side of that conversion — the required software update must also be applied to complete the changeover. Cross-reference this part number against your GRC-12 parts manual and confirm your machine's serial number falls within the applicable range before ordering.
Part Details
| Part Number | 1258341GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | SL Proportional Upgrade Kit, ANSI, GRC (2-Speed to Proportional Lift Conversion) |
Compatibility & Fitment
| Name | Models |
|---|---|
| GRC-12 | GRC-12 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
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