The MX4900 lists 41.3 PTO hp on both transmissions, but two engine figures each: 50.3 gross and 47.7 net hp on the gear tractor, 51.8 and 48.5 on the HST. Every engine-rated minimum near 50 hp turns on which standard the attachment maker means. Its operator manual also caps flail mowers at 72 inches and 1,100 lb, which removes 84-inch mowers whatever the power.
41.3PTO hp50.3 / 51.8engine hp1 & 2hitch category2,310lb lift at 24 in.
By Acreage Equipment · Reviewed November 8, 2026 · Specification research, not a field test
Manufacturer photo · Kubota · representative series photo
PTO WOOD CHIPPERS FOR THE MX4900
Chippers that fit the MX4900.
13 of 19 pto wood chippers we track pass the published power, hitch and speed screen on at least one configuration. Each still has a detail to confirm with the seller.
7″ max. chip diameter · 50–85 engine hp · official U.S. page
Gear: Possible — confirm detailsHST: Possible — confirm details
Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.
5″ max. chip diameter · 22–55 engine hp · official U.S. page
Gear: Possible — confirm detailsHST: Possible — confirm details
Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.
Gear: Possible — confirm detailsHST: Possible — confirm details
Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.
8″ maximum branch diameter, inches · 35–100+ PTO hp
Gear: Possible — confirm detailsHST: Possible — confirm details
Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.
8″ max. chip diameter · 19 PTO hp minimum; maximum not stated
Gear: Possible — confirm detailsHST: Possible — confirm details
Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.
8″ max. chip diameter · 19 PTO hp minimum; maximum not stated
Gear: Possible — confirm detailsHST: Possible — confirm details
Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.
16 of 23 flail mowers we track pass the published power, hitch and speed screen on at least one configuration. Each still has a detail to confirm with the seller.
Gear: Possible — confirm detailsHST: Possible — confirm details
Confirm the complete configured mower weight against the reviewed manual’s 1,100-lb flail limit, including applicable options and the manual’s scope. Hydraulic lift capacity does not replace this limit.
70″ cutting width, inches · 30–65 PTO hp · Hammer blades only
Gear: Possible — confirm detailsHST: Possible — confirm details
Confirm the complete configured mower weight against the reviewed manual’s 1,100-lb flail limit, including applicable options and the manual’s scope. Hydraulic lift capacity does not replace this limit.
70″ cutting width, inches · 30–65 PTO hp · Hammer blades only
Gear: Possible — confirm detailsHST: Possible — confirm details
Confirm the complete configured mower weight against the reviewed manual’s 1,100-lb flail limit, including applicable options and the manual’s scope. Hydraulic lift capacity does not replace this limit.
60″ cutting width, inches · 25–65 PTO hp on current page; linked-manual basis/limit conflicts
Gear: Possible — confirm detailsHST: Possible — confirm details
Confirm the complete configured mower weight against the reviewed manual’s 1,100-lb flail limit, including applicable options and the manual’s scope. Hydraulic lift capacity does not replace this limit.
Gear: Possible — confirm detailsHST: Possible — confirm details
Confirm the complete configured mower weight against the reviewed manual’s 1,100-lb flail limit, including applicable options and the manual’s scope. Hydraulic lift capacity does not replace this limit.
55″ cutting width, inches · 24–45 PTO hp · Hammer blades only
Gear: Possible — confirm detailsHST: Possible — confirm details
Confirm the complete configured mower weight against the reviewed manual’s 1,100-lb flail limit, including applicable options and the manual’s scope. Hydraulic lift capacity does not replace this limit.
10 more possible options in the full comparison table — see all.
7 ruled out by published specs
Land Pride FM2584 · hammer rotor — The 84-inch cutting width exceeds the 72-inch flail-mower maximum in the reviewed tractor manual. Confirm the manual’s applicability to your exact tractor.
Farmry LFS61 — Both engine (50.3) and PTO (41.3) horsepower exceed the published 35 hp maximum.
Farmry LFS45 — Both engine (50.3) and PTO (41.3) horsepower exceed the published 35 hp maximum.
Farmry LFS53 — Both engine (50.3) and PTO (41.3) horsepower exceed the published 35 hp maximum.
Farmry HFS87 — The 87-inch cutting width exceeds the 72-inch flail-mower maximum in the reviewed tractor manual. Confirm the manual’s applicability to your exact tractor.
Scope of this guideU.S. 8F/8R gear drive, synchronized shuttle · 4WD · ROPS · TC860-1971-9 reference / U.S. three-range HST · 4WD · ROPS · TC860-1971-9 reference. Each configuration below states the model and equipment covered by its sources.
Use 41.3 for PTO-rated attachments on either transmission. For engine-rated ones, ask the maker whether its figure is gross (SAE J1995) or net (SAE J1349) before reading a result. For flail mowers, check the manual’s 72-inch and 1,100-lb limits first.
Kubota’s May 2025 MX specification sheet lists 41.3 PTO hp for both MX4900 transmissions, with 50.3 gross / 47.7 net hp (gear) and 51.8 / 48.5 (HST).
Wallenstein BX72S (50–85 engine hp) is cleared by 0.3 (gear) or 1.8 (HST) on gross power and missed by 2.3 or 1.5 on net.
41.3 PTO hp clears Woodland Mills’ over-40 condition for full 6-inch logs at full feed in WC68 by 1.3.
Kubota’s TC860-1971-9 manual limits flail mowers to 72 inches and 1,100 lb: Land Pride FM2584 (84 inches) is out; FM2572 (72) is exactly at the width limit.
Farmry WCAP5 (45 engine hp) and the LFS mowers (35 hp) are exceeded; FH-BX62S, FM-62 and WCAP5 Pro (45 PTO hp) are 3.7 inside.
The 2026 catalog prints 3,474 lb for the MX4900, the MX5400 2WD’s weight; the sheet and manual give 3,716 (gear) and 3,734 lb (HST).
MX4900 U.S. 4WD 8F/8R gear drive, synchronized shuttle with ROPS, as separated in the current MX specification sheet, the 2026 catalog and Kubota TC860-1971-9. ROPS weight 3,716 lb; the cab version lists 4,251 lb and shares the power ratings. No model-year or serial cutoff is established; confirm the supplied manual.
Engine power
50.3 hp · 50.3 hp gross SAE J1995 in the current MX specification sheet and 2026 catalog; 47.7 hp net SAE J1349 in the same sheet and the TC860-1971-9 manual. Neither is PTO power. Confirm which engine standard an attachment maker requires.
Rear hitch
Category I & II (specification sheet); SAE Category 1, 2 (manual)
Lift at 24 inches
2,310 lb · 2,310 lb (1,050 kg) at 24 inches behind the lift points in the specification sheet and TC860-1971-9 printed p24; 2,870 lb (1,300 kg) at the lift points in the manual.
Lift at link ends
2,870 lb
Manual flail width limit
72 inches maximum cutting width · Kubota TC860-1971-9 printed p31 / PDF p35, MX4900/MX5400/MX6000 flail-mower row: maximum cutting width 1,830 mm (72 inches). The rotary-cutter row is separately 84 inches. Apply only with the manual matched to the actual tractor.
Manual flail weight limit
1,100 lb maximum · Kubota TC860-1971-9 printed p31 / PDF p35, flail-mower row: maximum weight 500 kg (1,100 lb), separate from the 2,310-lb lift at 24 inches. Complete configured mower weight and manual applicability require confirmation.
Hydraulics
9.5 gpm main pump in the specification sheet (the 2026 catalog labels it remotes/three-point hitch flow); power steering is separately 4.9 gpm. Up to three rear remote valves are optional; none is assumed installed.
Pressure
2,560 psi (17.7 MPa) system pressure in TC860-1971-9 printed p24. This is not the measured pressure at an installed rear outlet.
U.S. three-range HST · 4WD · ROPS · TC860-1971-9 reference
41.3 PTO hp
MX4900 U.S. 4WD three-range HST with ROPS, as separated in the current MX specification sheet, the 2026 catalog and Kubota TC860-1971-9. ROPS weight 3,734 lb; the cab version lists 4,268 lb and shares the power ratings. No model-year or serial cutoff is established; confirm the supplied manual.
Engine power
51.8 hp · 51.8 hp gross SAE J1995 in the current MX specification sheet and 2026 catalog; 48.5 hp net SAE J1349 in the same sheet and the TC860-1971-9 manual. Neither is PTO power. Confirm which engine standard an attachment maker requires.
Rear hitch
Category I & II (specification sheet); SAE Category 1, 2 (manual)
Lift at 24 inches
2,310 lb · 2,310 lb (1,050 kg) at 24 inches behind the lift points in the specification sheet and TC860-1971-9 printed p24; 2,870 lb (1,300 kg) at the lift points in the manual.
Lift at link ends
2,870 lb
Manual flail width limit
72 inches maximum cutting width · Kubota TC860-1971-9 printed p31 / PDF p35, MX4900/MX5400/MX6000 flail-mower row: maximum cutting width 1,830 mm (72 inches). The rotary-cutter row is separately 84 inches. Apply only with the manual matched to the actual tractor.
Manual flail weight limit
1,100 lb maximum · Kubota TC860-1971-9 printed p31 / PDF p35, flail-mower row: maximum weight 500 kg (1,100 lb), separate from the 2,310-lb lift at 24 inches. Complete configured mower weight and manual applicability require confirmation.
Hydraulics
9.5 gpm main pump in the specification sheet (the 2026 catalog labels it remotes/three-point hitch flow); power steering is separately 4.9 gpm. Up to three rear remote valves are optional; none is assumed installed.
Pressure
2,560 psi (17.7 MPa) system pressure in TC860-1971-9 printed p24. This is not the measured pressure at an installed rear outlet.
The 2026 catalog’s MX table prints 3,474 / 4,268 lb for the MX4900. The current MX specification sheet and the TC860-1971-9 manual give 3,716 lb (gear ROPS), 3,734 lb (HST ROPS), 4,251 lb (gear cab) and 4,268 lb (HST cab); 3,474 lb is the MX5400 2WD ROPS weight in both.
The specification sheet and manual weights are used. Weight does not change an attachment screen; confirm it before planning ballast or trailering.
FOLLOW THE NUMBERS
Sources & documentation
Research record reviewed November 8, 2026. Confirm the current manual and the exact revision supplied with your machine.
Kubota current-linked MX specification sheet (PDF modified May 14, 2025)Printed p16: MX4900 gear-drive and HST columns — engine gross SAE J1995 and net SAE J1349 power, PTO power, rated speed, pump capacity, Category I & II, lift at 24 in.; printed p17: overall width, weight with ROPS / cab
PTO chipper
PTO chipper
PTO chipper
PTO chipper
PTO chipper
PTO chipper
Flail mower
Flail mower
Flail mower
Flail mower
Flail mower