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Buying guide

Best PTO flail mowers by tractor HP

We matched 18 factory-direct flails to real horsepower bands — not brochure grass. Prices verified from manufacturer pages as of 2026-08-05.

Tom Brennan, editor of Flail Path, outdoors in a baseball capTom BrennanI put this together so you can match a flail to your tractor.

Top picks by tractor size

15–25 HP

Subcompact (15–25 PTO HP)

The FM-54 fits true subcompacts without overloading the 3-point. MechMaxx EFS48 is the budget alternative if you accept a 1-year warranty.

Woodmaxx FM-54 PTO flail mower

Our pick

FM-54

47″ · 15–25 PTO HP · $2,990

Also consider

EFS48

EFS48 review →

20–45 HP

Compact (20–45 PTO HP)

FM-62H adds hydraulic side shift for fence lines and orchards. Skip the H if you only mow open fields — the FM-62 saves ~$600. H does not tilt; banks are VAM.

Woodmaxx FM-62H hydraulic side-shift flail mower

Our pick

FM-62H

55″ · 20–45 PTO HP · $4,230

Also consider

FM-62

FM-62 review →

30–65 HP

Utility (30–65 PTO HP)

70″ coverage per pass for open pastures. Choose FM-78H when fence lines need hydraulic offset. H does not tilt — banks are the VAM line. NAM72 and NAM72H start at 45 PTO HP; do not treat Woodmaxx’s 30 HP FM-78 floor as a NAM72 floor.

Woodmaxx FM-78 PTO flail mower

Our pick

FM-78

70″ · 30–65 PTO HP · $3,900

Also consider

FM-78H

FM-78H review →

50–90 HP

Large acreage (50–90 PTO HP)

The widest Woodmaxx flail at 85″ with hydraulic side shift. Needs Cat 2, ballast, and lift. KDK72H is the Cat 2 value foil; NAM72 is cheaper fixed-width and still Cat 1.

Woodmaxx FM-96H 85-inch hydraulic side-shift flail mower

Our pick

FM-96H

85″ · 50–90 PTO HP · $5,825

Also consider

KDK72H

KDK72H review →

Full catalog

All models we cover

Woodmaxx FM-54 PTO flail mower

Woodmaxx

FM-54

Cuts 47″. The number in the name is not cutting width.

Entry Woodmaxx flail for subcompact tractors. 47″ cut, Cat 1, hammer or Y-blade options.

Cut
47″
PTO HP
15–25
Hitch
Cat 1 · Fixed offset
Price
$2,990$64/in · 3.8 HP/ft
Woodmaxx FM-62 PTO flail mower

Woodmaxx

FM-62

Cuts 55″. The number in the name is not cutting width.

Mid-size center-mount Woodmaxx flail. 55″ cut for 20–45 PTO HP compact tractors.

Cut
55″
PTO HP
20–45
Hitch
Cat 1 · Fixed offset
Price
$3,630$66/in · 4.4 HP/ft
Woodmaxx FM-62H hydraulic side-shift flail mower

Woodmaxx

FM-62H

Cuts 55″. The number in the name is not cutting width.

55″ Cat-1 flail with hydraulic side shift for fence lines, orchards, and pond edges on 20–45 PTO HP tractors.

Cut
55″
PTO HP
20–45
Hitch
Cat 1 · Side shift
Price
$4,230$77/in · 4.4 HP/ft
Woodmaxx FM-78 PTO flail mower

Woodmaxx

FM-78

Cuts 70″. The number in the name is not cutting width.

Wide center-mount Woodmaxx flail for utility tractors. 70″ coverage per pass.

Cut
70″
PTO HP
30–65
Hitch
Cat 1 · Fixed offset
Price
$3,900$56/in · 5.1 HP/ft
Woodmaxx FM-78H hydraulic side-shift flail mower

Woodmaxx

FM-78H

Cuts 70″. The number in the name is not cutting width.

70″ Woodmaxx flail with hydraulic side shift for edges, fences, and orchards.

Cut
70″
PTO HP
30–65
Hitch
Cat 1 · Side shift
Price
$4,620$66/in · 5.1 HP/ft
Woodmaxx FM-96H 85-inch hydraulic side-shift flail mower

Woodmaxx

FM-96H

Cuts 85″. The number in the name is not cutting width.

Largest Woodmaxx flail. 85″ cut, hydraulic side shift, 50–90 PTO HP class.

Cut
85″
PTO HP
50–90
Hitch
Cat 2 · Side shift
Price
$5,825$69/in · 7.1 HP/ft
MechMaxx EFS48 48-inch flail mower

MechMaxx

EFS48

Budget 48″ Cat-1 light-duty flail with 20 cast-steel hammers and a 15–35 HP rating.

Cut
48″
PTO HP
15–35
Hitch
Cat 1 · Fixed offset
Price
$1,499$31/in · 3.8 HP/ft
MechMaxx EFS60 60-inch flail mower

MechMaxx

EFS60

60″ light-duty value flail for open grass and weeds, with a low sale price but an optimistic 15 HP lower rating.

Cut
60″
PTO HP
15–35
Hitch
Cat 1 · Fixed offset
Price
$1,699$28/in · 3.0 HP/ft
MechMaxx NAM60 60-inch PTO flail mower

MechMaxx

NAM60

60″ NAM-series hammer flail with a heavier 5″ rotor package than EFS and no hydraulic side shift.

Cut
60″
PTO HP
30–60
Hitch
Cat 1 · Fixed offset
Price
$2,299$38/in · 6.0 HP/ft
MechMaxx NAM68 68-inch PTO flail mower

MechMaxx

NAM68

68″ fixed NAM hammer flail for 30–60 HP tractors that prioritizes width per dollar over hydraulic reach.

Cut
68″
PTO HP
30–60
Hitch
Cat 1 · Fixed offset
Price
$2,499$37/in · 5.3 HP/ft
MechMaxx NAM72 72-inch PTO flail mower

MechMaxx

NAM72

72″ NAM-series fixed flail for 45–85 HP utility tractors, priced as a width-per-dollar alternative to Woodmaxx FM-78.

Cut
72″
PTO HP
45–85
Hitch
Cat 1 · Fixed offset
Price
$2,699$37/in · 7.5 HP/ft
MechMaxx NAM68H hydraulic side-shift flail mower

MechMaxx

NAM68H

68″ NAM hydraulic side-shift flail with 16″ total lateral travel for 30–60 HP tractors.

Cut
68″
PTO HP
30–60
Hitch
Cat 1 · Side shift
Price
$2,799$41/in · 5.3 HP/ft
MechMaxx NAM72H hydraulic side-shift flail mower

MechMaxx

NAM72H

72″ NAM hydraulic side-shift flail with 16″ total lateral travel for 45–85 HP Cat 1 tractors.

Cut
72″
PTO HP
45–85
Hitch
Cat 1 · Side shift
Price
$2,999$42/in · 7.5 HP/ft
MechMaxx VAM65 offset ditch bank flail mower

MechMaxx

VAM65

65″ ditch-bank flail with hydraulic offset and tilt, but MechMaxx limits the VAM use case to green or tender grass.

Cut
65″
PTO HP
30–60
Hitch
Cat 1 · Grass-only bank
Price
$2,999$46/in · 5.5 HP/ft
MechMaxx VAM48 offset ditch bank flail mower

MechMaxx

VAM48

48″ VAM ditch-bank mower with hydraulic offset/tilt, strictly positioned for green or tender grass by MechMaxx.

Cut
48″
PTO HP
25–50
Hitch
Cat 1 · Grass-only bank
Price
$2,499$52/in · 6.3 HP/ft
MechMaxx VAM60 offset ditch bank flail mower

MechMaxx

VAM60

60″ VAM ditch-bank mower with hydraulic offset/tilt, useful for tender grass banks but not brush or brambles.

Cut
60″
PTO HP
25–60
Hitch
Cat 1 · Grass-only bank
Price
$2,699$45/in · 5.0 HP/ft
MechMaxx KDK63H heavy-duty hydraulic side-shift flail mower

MechMaxx

KDK63H

63″ KDK Cat 2 side-shift flail that steps up from NAM-H with a heavier frame, 2.7 lb hammers (14 × 2.7 = 37.8 lb total vs NAM68H’s 50.4), 6″ rotor.

Cut
63″
PTO HP
50–75
Hitch
Cat 2 · Side shift
Price
$3,399$54/in · 9.5 HP/ft
MechMaxx KDK72H heavy-duty hydraulic side-shift flail mower

MechMaxx

KDK72H

72″ KDK Cat 2 side-shift flail for buyers who want NAM72H width in a heavier Cat 2 frame. Individual hammers are 2.7 lb; total hammer mass is 43.2 lb vs NAM72H’s 50.4.

Cut
72″
PTO HP
50–75
Hitch
Cat 2 · Side shift
Price
$3,699$51/in · 8.3 HP/ft

Not sure where to start?

Size your flail first

Cutting width should track PTO horsepower. No model in this catalog publishes a floor under 3.0 HP per foot of cut. EFS60 equals that floor. Our sizing guide maps those rules to specific FM and EFS models.

What size flail mower do I need? →