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KIOTI · COMPACT TRACTOR ATTACHMENTS

KIOTI RX6640
Attachments that fit.

The KIOTI RX6640 has 66.4 gross hp, 54.9 PTO hp and a 4,327-lb lift 24 inches aft of the hitch on a Category II hitch. The RX40 frame lifts 4,327 lb, the most of any KIOTI here, and its 54.9 PTO hp is 10.1 under WoodMaxx FM-78’s 65.

54.9PTO hp66.4engine hp2hitch category4,327lb lift at 24 in.
Wood chippers that fitFlail mowers that fit

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

KIOTI RX6640 hub: KIOTI RX-series cab tractor in a pasture (representative RX Series photo)
Manufacturer photo · KIOTI · representative series photo

PTO WOOD CHIPPERS FOR THE RX6640

Chippers that fit the RX6640.

6 of 19 pto wood chippers we track pass the published power, hitch and speed screen. Each still has a detail to confirm with the seller.

Full chipper guide
Wallenstein BX72S PTO wood chipperPTO chipper

Wallenstein

BX72S

7″ max. chip diameter · 50–85 engine hp · official U.S. page

Possible — confirm details

Confirm the correct attachment and driveline configuration for the tractor’s PTO speed; listed speed options are discrete settings.

Check seller priceAsk for a quote
Explore buying options at Wallenstein
Fit details
Wallenstein BX72RI PTO wood chipperPTO chipper

Wallenstein

BX72RI

7″ max. chip diameter · 45–85 engine hp · current U.S. page (manual table: 50–85 hp for the BX72R)

Possible — confirm details

Confirm the correct attachment and driveline configuration for the tractor’s PTO speed; listed speed options are discrete settings.

Check seller priceAsk for a quote
Explore buying options at Wallenstein
Fit details
13 ruled out by published specs

FLAIL MOWERS FOR THE RX6640

Flail mowers that fit the RX6640.

6 of 23 flail mowers we track pass the published power, hitch and speed screen. Each still has a detail to confirm with the seller.

Farmry HFS87 flail mowerFlail mower

Farmry

HFS87

87″ cutting width · 30–85 HP (basis not stated) · official page and manual

Possible — confirm details

Ask the manufacturer whether the horsepower range means engine or PTO power.

$4,499checked November 14, 2026
Check current price at Farmry
Fit details
17 ruled out by published specs
Scope of this guideU.S. RX6640P · power shuttle · 4WD · ROPS · independent PTO. Each configuration below states the model and equipment covered by its sources.

Shortlist the Category 2 attachments: WoodMaxx FM-78 (hammer, FM-78H and Y-blade) and Land Pride FM2572 and FM2584 for mowing; WoodMaxx WM-8H, WM-8M, MX-8800 and MX-9900 and Wallenstein BX72S for chipping. The Category II hitch removes Category 1-only attachments such as Woodland Mills WC88 and Farmer-Helper FH-EFGC155.

  • Brochure and page: 66.4 gross hp, 54.9 PTO hp, power shuttle, 540/540E.
  • Lift: 4,327 lb at 24 inches aft of the hitch; Category II.
  • WoodMaxx FM-78 (30–65 PTO hp): 10.1 under the ceiling.
  • The RX6620 (RX20) is rated 57.6 PTO hp from a similar engine rating.
  • 6,051 lb (ROPS).
  • 82.1 in. minimum width.

Choose the exact configuration.

U.S. RX6640P · power shuttle · 4WD · ROPS · independent PTO

54.9 PTO hp

Current U.S. KIOTI RX6640P (ROPS) from the November 2025 RX20/RX40 brochure and the current page. 6,051 lb on the page; 82.1 in. minimum width. Rear PTO 540/540E. Cab models are not profiled.

Engine power
66.4 hp · 66.4 hp engine gross in the KIOTI brochure and on the current page; the SAE standard is not named. It is not PTO power.
Rear hitch
Category II
Lift at 24 inches
4,327 lb · 4,327 lb maximum lifting capacity, footnoted “@ 24 in. aft of hitch” in the brochure; the current page repeats it.
Lift at link ends
Not confirmed in reviewed sources
Hydraulics
Not recorded for this screen; see the brochure.
Pressure
Not published in the reviewed brochure or page.
Find attachments for this tractor

FOLLOW THE NUMBERS

Sources & documentation

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

  1. KIOTI RX20/RX40 brochures (PDF created November 6, 2025)RX40 specifications: Engine Gross HP 66.4 / 73.1, PTO HP 54.9 / 60.9, power shuttle, Category II, Maximum Lifting Capacity* 4,327.7 lb (*@ 24 in. aft of hitch), weight with AG tires
  2. KIOTI RX6640P current U.S. product pageFull Specs: Power, PTO Power, Lift Capacity, Hitch Category, Width, Weight
  3. TMG Industrial official U.S. TFM60 product page — Current price, operation weight, width and shipping weight
  4. TMG TFM60/68/72 manual — cover v.2022.11.29; filename 2025.01.09 — p6 power; p11 hitch adjustment; p12 specifications
  5. Official U.S. WC88 page: price, capacity and drive system
  6. Current linked WC88 operator manual, Rev C, 22-Aug-2022
  7. Official WM-8H product page: power, feed, hitch and price
  8. WM-8H linked manual — assembly p20 and maintenance p29 give different fill quantities
  9. WoodMaxx current manual index
  10. Official FM-78 page: exact hammer variant, price and equipment
  11. Current FM-62/62H and FM-78/78H manual: printed p40 / PDF p41
  12. Official MX-9900 page: power/capacity claims, feed, hitch and current sale price
  13. MX-9900 manual Rev C, September 18, 2026: specifications and setup
  14. Wallenstein BX72S current U.S. page — engine power, current hitch categories, capacity, accessories and reference mass
  15. BX72S official support page — current operator/setup documents
  16. BX-S operator manual Z97085_En, Rev Jan-2025 — pp14,18–22,26,28,30,40
  17. PTO shaft instructions Z97844_En, Rev Aug-2024 — tractor/quick-hitch sizing
  18. Land Pride FM25 current North American family and model listing
  19. Official FM25 public catalog response — active models, gallery and linked documents
  20. FM25 operator manual 333-138M, printed 7/1/24 — requirements pp14–20, options pp15,30,33, specifications p39
  21. Official FM25 brochure — printed p12 model table
  22. Wallenstein BX72RI current U.S. page — engine hp range, mounting, capacity, hydraulic flow and weight
  23. BX72RI official support page — operator and parts manuals by serial number
  24. BXR Series Operator’s Manual, P3 PULSE V3 (Oct 2022) — §10.1 specifications, hitching, power pack
  25. Wallenstein wood chipper lineup — engine hp ranges for R and RI models

FROM YOUR TRACTOR TO THE JOB

Equipment guides for this model.

FIELD GUIDE

KIOTI RX6640 wood chippers: the Category II hitch decides

At 54.9 PTO hp and 66.4 gross hp the RX6640 has the power for nearly every chipper here, but its Category II hitch leaves six: WoodMaxx WM-8H, WM-8M, MX-8800 and MX-9900, and Wallenstein BX72S and BX72RI.

Read the guide →