Farmry LFS45 vs WoodMaxx FM-54 Y: two light flail mowers for 15-hp-class tractors
LFS45 and FM-54 Y are two of the lightest flail mowers on this site, and both start at 15 hp. A KIOTI CS2220H (16.3 PTO hp, 21 gross hp, 700-lb lift, 45.9 inches wide) is inside both. LFS45 is 53 lb lighter and has a broader power range on an unstated basis; FM-54 Y cuts slightly wider on a stated PTO range.
By Acreage Equipment · Reviewed November 9, 2026 · Specification research, not a field test
Consider LFS45 for the lightest setupShortlist LFS45 when Farmry confirms its range covers your tractor, the lift is tight and a 45-inch cut suits the work.
Consider FM-54 Y for a stated PTO rangeShortlist FM-54 with Y-blades when the tractor has 15–25 PTO hp and a 47-inch cut that matches a 46-inch tractor is wanted.
Observed U.S. seller prices, checked November 7, 2026 (FM-54 Y), from the retained product records. Prices were not refreshed for this comparison. Tax, shipping, options and the final seller quote may change the delivered total; these are dated observations, not a live price or stock feed. The retained LFS45 record does not carry a dated price observation; check Farmry’s current listing. Open your saved comparison →
The differences that matter.
01
15–35 hp against 15–25 PTO hp
Farmry lists LFS45 at 15–35 tractor hp without naming engine or PTO power. WoodMaxx’s manual lists FM-54 with Y-blades at 15–25 PTO hp; the hammer version needs 20–25.
A 16-PTO-hp tractor is inside both. LFS45 has more headroom for a larger tractor later; order FM-54 with Y-blades, not hammers.
Farmry’s category table lists LFS45 at 337 lb net; its Rev 1.7 manual lists 355 lb with the PTO shaft.
FM-54’s manual gives 408 lb product weight and 3/4–3-1/2-inch cutting height; its page gives 410 lb plus a 39-lb shaft and 3/4–2-1/2 inches.
This comparison reuses the manufacturer evidence retained in the product records reviewed November 7, 2026; product pages were not re-fetched on November 9. LFS45 uses the current product page and Rev 1.7 manual; FM-54 Y uses the current page and the 2025-and-newer manual.
FOLLOW THE NUMBERS
Sources & documentation
Research record reviewed November 9, 2026. Confirm the current manual and the exact revision supplied with your machine.
