THE TRADEOFFS, EXPLAINED

Farmry LFP47 vs WoodMaxx FM-78 hammer: a 45-hp ceiling or a 65-PTO-hp ceiling on a 65-inch tractor

LFP47 and FM-78 overlap only between 30 and 45 hp, and a tractor such as the KIOTI NX5510 sits at the top of that band. Its synchro shuttle’s 46.0 PTO hp and 55 engine hp are over LFP47’s 45 on any reading; its HST’s 43.1 PTO hp is inside if Farmry means PTO power. FM-78 is inside on both. FM-78 also cuts 70 inches, wider than the 65.6-inch tractor; LFP47 cuts 47.2.

By Acreage Equipment · Reviewed November 9, 2026 · Specification research, not a field test

Compare these two with my tractor Compare the complete purchase cost →

Farmry

LFP47

25–45 hp · basis unclear · 47.2″ Cutting width, inches

$2,199 checked November 7, 2026

Check current price at Farmry

Specs & tractor check →

WoodMaxx

FM-78 · Hammer blades

30–65 PTO hp · Hammer blades only · 70″ Cutting width, inches

$3,900 checked November 7, 2026

Check current price at WoodMaxx

Specs & tractor check →

START WITH THE DECISION

Consider LFP47 for grass on a tractor clearly under 45 hpShortlist LFP47 when Farmry confirms its range covers your tractor on the basis it means, the growth is mostly grass and a narrow cut is acceptable.

Consider FM-78 for brush on tractors from 30 to 65 PTO hpShortlist FM-78 when the tractor’s PTO rating is between 30 and 65 hp, the cut should span the rear tires and hammers suit the growth.

Read the evidence behind the choice ↓

Observed U.S. seller prices, checked November 7, 2026, 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. Open your saved comparison →

The differences that matter.

An unstated 25–45 against 30–65 PTO hp

Farmry lists LFP47 at 25–45 tractor hp without naming engine or PTO power. WoodMaxx’s manual lists FM-78 at 30–65 PTO hp for either blade set.

A tractor with 46 PTO or 55 engine hp is over LFP47 and well inside FM-78. At 43 PTO and 55 engine hp, LFP47 depends on Farmry’s basis.

47.2 inches against 70

Farmry’s manual gives LFP47 a 120-cm (47.2-inch) cutting width. FM-78 cuts 70 inches and lists 80 inches overall on its page, with fixed extents of 33 inches left and 46 inches right of center.

On a 65.6-inch tractor, FM-78 spans the rear tires; LFP47 leaves about 18 inches of track uncut.

Y-blades against hammers

LFP47 is specified with 32 Y-blades; Farmry’s page describes hammers as a future option. This FM-78 configuration carries hammers; WoodMaxx says Y-blade and hammer mowers are not interchangeable.

Y-blades suit grass and light growth; hammers suit heavier brush. Choose the blade set when ordering.

464 lb against 880 lb

LFP47 is 464 lb including the PTO shaft on Farmry’s page (210 kg in the manual). WoodMaxx’s manual lists FM-78 at 880 lb product weight; its page lists 710 lb mower-only plus a 39-lb shaft.

FM-78 is roughly twice the rear load. Both are under a 3,177-lb lift at 24 inches.

Category 1 against Category 1 or 2

LFP47 is a Category 1 mower. WoodMaxx’s manual and page hero support FM-78 on Category 1 or 2 with bushings; lower page text says Category 1 only.

On a tractor whose hitch category is in question, FM-78 has the documented Category 2 option; confirm the bushing set on the order.

$2,199 against $3,900

LFP47 was observed at $2,199 and FM-78 hammer at $3,900 on November 7, 2026.

FM-78 cost $1,701 more on these dated observations for 22.8 more inches of cut, hammers and a wider power range.

A CONDITIONAL SHORTLIST

Which direction makes sense?

Consider LFP47 for grass on a tractor clearly under 45 hp

Shortlist LFP47 when Farmry confirms its range covers your tractor on the basis it means, the growth is mostly grass and a narrow cut is acceptable.

Check current price at Farmry Prepare questions for the seller

Consider FM-78 for brush on tractors from 30 to 65 PTO hp

Shortlist FM-78 when the tractor’s PTO rating is between 30 and 65 hp, the cut should span the rear tires and hammers suit the growth.

Check current price at WoodMaxx Prepare questions for the seller

Keep these source limits with the decision.

LFP47’s manual recommends SAE 85W-90 API GL-5 gear oil; the product page says SAE90 EP.

FM-78’s page hero and current manual support Category 1 or 2 with bushings, while lower page text says Category 1 only; page mower-only weight (710 lb plus 39-lb shaft) differs from the 880-lb manual figure.

This comparison reuses the manufacturer evidence retained in the product records reviewed November 7, 2026; product pages were not re-fetched on November 9. LFP47 uses the current product page and the Rev 1.3 manual; FM-78 uses the current product page and the 2025-to-current WoodMaxx manual.

FOLLOW THE NUMBERS

Sources & documentation

Research record reviewed November 9, 2026. Confirm the current manual and the exact revision supplied with your machine.

Farmry LFP47 official product pageSpecifications > Tractor Power Range; 32 Y-blades; Weight (includes PTO shaft); price
LFP Series operator manual, Rev 1.3, printed pp17–20Printed pp17–20: 120 cm / 47.2-in. cutting width, 210 kg weight, gear-oil specification
WoodMaxx FM-78 official product pageBlack/hammer SKU FM-78-0006; 30–65 PTO hp; 70-in. cut; 80 in. overall; weight; hitch type; price
WoodMaxx 2025-to-current FM series operator manualPrinted p40 / PDF p41: blade-specific PTO requirements, cutting width, fixed extents, hitch category and Category 2 bushings, product weight
WoodMaxx manual index: Models 2025 to current