Robot Mower Lowering Kits: What They Are and Who Needs Them

Robot mowers have historically been better suited for cool-season grasses — the Kentucky bluegrass, fescue, and perennial ryegrass that dominate lawns in the northern United States — than for warm-season varieties. The reason is simple: standard robot mower cut height ranges start at 2 inches, and warm-season grasses like Bermuda and Zoysia are typically cut at 0.5 to 1.5 inches. A mower that can't cut below 2 inches is not a functional mower for those grass types.

The 2026 Navimow lineup introduces lowering kits that change this.

What a Lowering Kit Does

A lowering kit is a physical modification to the mower's deck height adjustment range. By adding a spacer component between the cut disc assembly and the chassis, the kit lowers the minimum position the deck can reach — extending the cut height range downward without affecting the mower's maximum cut height.

On the i2 LiDAR and H2 LiDAR series, the lowering kit (included in the box, no additional purchase) brings minimum cut height from 2 inches down to 0.80 inches. That's the range needed for standard Bermuda and Zoysia lawn maintenance.

On the Teranox commercial series, a lowering kit is available as an add-on accessory that brings minimum cut height from 0.75 inches down to 0.40 inches. This is sports turf and golf course territory — the kind of cutting height used for Bermuda fairways, Zoysia sports fields, and premium warm-season lawn applications.

How Installation Works

For the residential models, the lowering kit ships in the box. The installation process: attach the spacer component to the mower (the process is designed to be homeowner-accessible), then open the Navimow app and indicate that the lowering kit is installed. The app automatically recalibrates all cut height settings to reflect the new range. You don't have to manually figure out how the new millimeter measurements translate to the original scale — the software handles the adjustment.

For the Teranox commercial kit, the modification additionally involves changing the anti-clogging disc to an independent-bearing version designed to operate more effectively at lower heights without jamming on grass clippings.

Relevance for Minnesota Homeowners

Bermuda and Zoysia lawns are uncommon in Minnesota. Our climate is too cold for most warm-season grass varieties to reliably overwinter — these grasses go dormant and typically don't survive the combination of Minnesota winters and spring frost cycles. The primary warm-season application of the lowering kit in northern states is mixed or transitional lawns rather than full Bermuda or Zoysia installations.

The lowering kit is more relevant in the southern portion of Navimow's dealer network — Tennessee, North Carolina, Georgia, Texas, and the transition zone states where warm-season grasses are standard.

For Minnesota homeowners, the 2-inch standard minimum cut height on most Navimow models is appropriate for cool-season grass management. The lowest cut heights typically recommended for bluegrass and fescue — even for a premium lawn — are 2.5 to 3 inches during summer, with 3 to 3.5 inches in spring and fall. Standard Navimow cut range handles this with room to spare.

When Minnesota Homeowners Might Use a Lowering Kit

There's one scenario worth noting for the Forest Lake and East Twin Cities area: homes with very fine fescue lawns or specialty grass mixes that have a lower preferred cut height than standard bluegrass. Creeping red fescue, hard fescue, and sheep fescue can be maintained at 1.5 to 2.5 inches — the lower end of which pushes against the standard 2-inch minimum. For homeowners with fine fescue lawns who want to maintain the lower end of that range with precision, the lowering kit provides additional flexibility.

It's also worth knowing about the lowering kit if you're evaluating Navimow for a property in the transition zone — Missouri, Kansas, parts of Illinois — where mixed grass types and cool/warm-season blends are common.

The Bigger Picture

The lowering kits represent Navimow expanding the addressable market for its systems southward and into premium turf applications. For Minnesota homeowners, the primary take-away is that the 2026 models were designed with grass versatility in mind — even if the lowest cut heights aren't what your lawn needs, the engineering investment signals a product line built for the full range of North American lawn types, including the cool-season grasses that Minnesota yards are built on.