IN Brief:
- Manitowoc has introduced the upFLEX Rated Capacity Limiter for Grove rough-terrain and truck cranes built between 2002 and 2023.
- The retrofit is designed as a plug-and-play replacement for older iFLEX systems, using a 7-inch console and direct CAN-BUS connection.
- A separate APEX indicator adds wireless monitoring for anti-two-block and wind-speed sensors.
Manitowoc has introduced a retrofit lift management package for older Grove mobile cranes, giving owners of legacy machines a route to newer control and monitoring technology without replacing the crane itself.
The new upFLEX Rated Capacity Limiter, unveiled at CONEXPO 2026, is aimed at Grove rough-terrain and truck cranes built between 2002 and 2023. It replaces earlier iFLEX units and is designed to bring a more standardised operator interface and updated lift monitoring capability across a broad installed base of older machines.
At the centre of the upgrade is a 7-inch console with revised controls and working screens that allow operators to move through operating modes more easily. Manitowoc says the system connects directly to the crane’s CAN-BUS through the onboard Ethernet, allowing a plug-and-play installation approach that reduces downtime and avoids more intrusive modification work.
That matters in a market where crane owners are under pressure to extend fleet life while still meeting modern expectations around safety systems, operator usability, and equipment reliability. Replacement cycles for heavy lifting equipment are long, and for many owners the practical question is not whether a machine is old, but whether it can still be kept productive, supportable, and compliant on current jobs.
Mark Harlacher, director of sales and marketing for customer support at Manitowoc, said: “Owners can retrofit the unit to any Grove rough-terrain or truck crane built between 2002 and 2023, extending the life of their crane. Many crane owners seek to maximize the life of their cranes, and now they have the option to upgrade to the latest system in a fast and straightforward way.”
Alongside upFLEX, Manitowoc has also introduced APEX, a stand-alone in-cab indicator for wireless sensors. The unit can be retrofitted to Grove cranes and provides a wireless connection to the anti-two-block sensor and wind speed sensor, with status information shown on a graphic display in the cab.
For plant hire companies and fleet operators, the significance is less about novelty than about lifecycle economics. Retrofitting core lift management systems can improve fleet consistency, support operator familiarity across different crane vintages, and defer the capital outlay associated with full machine replacement. On mixed-age fleets, that kind of standardisation can take some of the friction out of training, maintenance, and day-to-day operation.
The new system replaces the iFLEX5 (LI5G), iFLEX5 (CGMK), and iFLEX2 (LSQG) units. Manitowoc is pitching it as a direct upgrade path for cranes that remain mechanically useful but are carrying older electronics.
That reflects a wider shift across site equipment, where digital upgrades increasingly arrive as retrofit packages rather than as features reserved for new-build machines. In an expensive fleet market, manufacturers have noticed that operators would quite like a second life for the hardware they already own.
