Kubota KX080 Guide: Variant-Specific Specs, Pricing, and Buyer Checks

Overview

The Kubota KX080-5 is the current machine behind the “KX080” name: an 8-ton-class compact excavator with a Kubota V3307-CR-TE5 engine, a published 66.6 horsepower, a 14,660 lbf bucket breakout force, and an operating weight between 18,520 and 19,620 lb depending on configuration, per Kubota’s KX080-5 spec sheet. Which build fits a given job depends on tracks, blade, hydraulics, and attachments, not the model name alone.

That last point matters because “KX080” is not one machine. The name covers at least four documented variants, including the KX080-3, the KX080-4A, the KX080-4 Super Series 2, and the current KX080-5. These machines use different engines and carry different output ratings, so a specification pulled from an older brochure or a used listing cannot be transferred to the current model. Kubota’s KX Series page lists the KX080-5 at an MSRP as low as $138,273, a figure that excludes tax, dealer fees, and optional equipment, which is a different number from a configured dealer price or a used asking price.

This guide works through the current KX080-5 specifications, its dimensions and transport implications, hydraulic and attachment fit, price interpretation, generation differences, and the configuration details worth recording before comparing quotes or listings.

KX080-5 engine and core performance specifications

The KX080-5 runs a Kubota V3307-CR-TE5 diesel engine with a displacement of 203.3 cubic inches, according to both Kubota’s KX080-5 spec sheet and the Krebs Kubota dealer page for the KX080-5R3A. The headline output figure published across current sources is 66.6 horsepower, which Kubota of Chattanooga attributes directly to the V3307-CR-TE5.

The horsepower figure needs one caution before it goes into any comparison. Kubota’s current KX080-5 spec sheet lists two output figures, 66.6 (49.7 kW) at 2000 rpm and 62.3 (46.5 kW) at 2000 rpm, but the extracted document does not preserve which rating standard applies to which number. The Krebs dealer page labels 66.6 as gross horsepower. The older KX080-4 Super Series 2 brochure, which documents the same V3307-CR-TE5 engine, explicitly labels 66.6 hp as SAE J1995 gross output and 62.3 hp as SAE J1349 net output. That pattern strongly suggests the same gross and net split applies to the KX080-5, but a buyer comparing the machine against a competitor’s net-rated engine should confirm the labels in a current Kubota brochure rather than assume them. Comparing one machine’s gross rating against another machine’s net rating overstates the first machine’s advantage.

The table below collects the core performance figures documented for the current KX080-5.

Specification	KX080-5 figure	Source
Engine model	Kubota V3307-CR-TE5	Kubota KX080-5 spec sheet
Published output	66.6 hp (49.7 kW) at 2000 rpm; 62.3 hp (46.5 kW) at 2000 rpm also listed	Kubota KX080-5 spec sheet
Displacement	203.3 cu in (3,331 cc)	Kubota spec sheet; Krebs Kubota
Bucket breakout force	14,660 lbf (6,650 kgf)	Kubota spec sheet; Crystal Tractor listing
Arm breakout force	8,554 lbf (3,880 kgf)	Kubota spec sheet; Crystal Tractor listing
Pump capacity	22.3 GPM (84.6 LPM), variable × 2	Kubota spec sheet; Kubota of Chattanooga
Auxiliary hydraulic flow	26.4 GPM (100 LPM) / 14.7 GPM (55.8 LPM)	Kubota spec sheet; Krebs Kubota
Track options	Rubber or steel	Kubota KX080-5 spec sheet
Operator protection	ROPS / OPG (TOP Guard, Level I)	Kubota KX080-5 spec sheet

Beyond raw figures, Kubota’s KX080-5 launch announcement describes a 2-pump load-sensing hydraulic system that improves smoothness when running attachments and supports simultaneous operations, plus an auto-shift system that moves travel from high to low range automatically based on traction effort and terrain. Those system behaviors are part of what the specifications deliver in practice, and they are covered in more detail in the hydraulics and job-fit sections below.

Dimensions, operating weight, digging range, and transport fit

The KX080-5 measures 21 feet 1.9 inches (6,450 mm) long overall, 7 feet 2.6 inches (2,200 mm) wide, and 8 feet 4 inches (2,540 mm) tall, according to Kubota’s KX080-5 spec sheet and the matching figures on the Krebs Kubota dealer page. Its working range is substantial for the compact class: Kubota’s launch material states a maximum digging depth of 15 feet 1.1 inches and a maximum dumping height of 17 feet 2.7 inches, and the Kitsap Tractor dealer listing adds a maximum digging reach of 23 feet 8.6 inches at ground level.

Operating weight is where buyers most often go wrong, because it is configuration-dependent. Kubota’s spec sheet lists operating weights (including a 165 lb operator) ranging from 18,520 lb (8,400 kg) up to 19,620 lb (8,900 kg) across the machine’s rubber-track, steel-track, and angle-blade configurations. The extracted document does not preserve which exact figure belongs to which track-and-blade combination. The spread itself is the practical lesson: 19,620 − 18,520 = 1,100 lb of difference between the lightest and heaviest documented builds. Before adding accessory weights, verify what equipment the applicable operating-weight figure already includes. A trailer plan built around the light figure can fail against the heavy one.

For transport, the supplied evidence supports the machine’s weight and dimensions but not any universal trailer, tow-vehicle, or permit recommendation. A workable verification sequence looks like this:

• Identify the exact configuration (tracks, blade, coupler, thumb, bucket) and get its documented operating weight, then add the weight of any attachments hauled with the machine.
• Compare that total against the trailer’s actual payload, meaning its rated capacity minus its own empty weight, not its gross rating.
• Check the machine’s 7-foot-2.6-inch width and 8-foot-4-inch height against the trailer deck and route clearances.
• Confirm licensing, securement, axle-load, and permit requirements with the transport authority in the operating jurisdiction, because none of the supplied model documentation addresses them.

At roughly 18,500 to 19,600 lb, a KX080-5 sits well beyond the payload of light-duty equipment trailers, so the trailer-payload check is not a formality; verify the documented weight basis and add only equipment not already included in that figure. Treat the configured weight as the input, and treat local transport rules as an open item that model spec sheets do not answer.

Hydraulics and attachment fit

The KX080-5’s hydraulic system is documented in more detail than most compact excavators at this size. Kubota’s spec sheet and the Krebs dealer page both list a pump capacity of 22.3 GPM (84.6 LPM) from two variable-displacement pumps, with auxiliary hydraulic flows of 26.4 GPM (100 LPM) and 14.7 GPM (55.8 LPM). Kubota’s launch announcement describes the 2-pump arrangement as a load-sensing system that improves smoothness when operating attachments and lets operators perform simultaneous tasks. The Kitsap Tractor listing adds that a third auxiliary circuit is available for thumb or diverter use, and that auxiliary flows are adjustable.

Attachment hardware appears repeatedly in current listings. The Kitsap Tractor KX080-5 listing includes an angle blade, a K7402A coupler, a K7405A hydraulic thumb, and a K7427 24-inch dig bucket in its advertised price. A MachineryTrader listing for a KX080-5R3A similarly describes an enclosed cab, angle blade, dual auxiliary ports, hydraulic thumb, quick coupler, and 24-inch bucket. These examples show that couplers, thumbs, and buckets are listing-specific equipment, not guaranteed inclusions, so two “KX080-5” prices can describe materially different machines.

When checking whether a specific attachment will run on a specific KX080-5, horsepower is the wrong starting point. The checks that actually determine fit are:

• Auxiliary flow: does the attachment’s required flow fall within the documented 26.4 GPM or 14.7 GPM auxiliary-flow figures, does the flow adjustment on the machine cover it, and which configured circuit on the specific machine provides each flow?
• Circuit function: does the attachment need one-way flow, two-way flow, or a dedicated third circuit of the kind Kitsap Tractor describes for thumbs and diverters?
• Required pressure: the supplied KX080-5 documentation does not state auxiliary relief pressure, so confirm it against the attachment manufacturer’s requirement before purchase.
• Coupler compatibility: match the attachment’s mounting interface to the specific coupler on the machine, such as the K7402A in the Kitsap configuration.
• Attachment weight: heavy attachments change lift behavior and transport weight, so weigh them into the totals from the previous section.

An attachment that passes the flow check but exceeds the machine’s relief pressure, or that hangs on an incompatible coupler, does not work regardless of how much engine power is available. Verify all five points against the exact machine build and the attachment’s specification sheet, not against the model name.

Job fit for trenching, utility work, grading, and site preparation

The documented capabilities map cleanly onto a specific set of tasks. The Kitsap Tractor listing states that the load-sensing hydraulic system, adjustable auxiliary flows, and optional angle blade make the KX080-5 adaptable to utility work, trenching, grading, and site preparation. The working range supports that claim: a 15-foot-1-inch digging depth and 23-foot-8.6-inch reach (Kitsap Tractor) cover deep utility trenches and wide excavation footprints, while the 14,660 lbf bucket breakout force documented by Kubota and Crystal Tractor handles compacted or rocky ground that stalls smaller machines.

Blade work is a documented strength rather than an afterthought. Kitsap Tractor notes that the optional angle blade with float improves grading and backfilling efficiency, and Kubota’s KX080-4 Super Series 2 brochure explains the mechanism on the earlier machine: a thumb-operated rocker switch on the dozer lever angles the hydraulic blade left or right to push soil sideways as the machine moves forward, eliminating repeated repositioning when backfilling trenches. Kubota’s launch material adds that the auto-shift travel system supports simultaneous operations when dozing and turning, which matters for continuous backfill passes.

Confined-space suitability is the one job-fit question the evidence does not resolve. Dealer descriptions of the KX080-5 use varying tail-swing language, and phrases like “tight tail” or “reduced overhang” describe different aspects of a design; none of them is the same claim as zero tail swing. The current spec extraction does not preserve a rear-swing clearance figure or a tail-swing classification for the KX080-5. Before committing the machine to work against walls, traffic lanes, or structures, obtain the actual rear-swing clearance from a current Kubota brochure or measure it on the machine, and plan the working envelope from that number rather than from marketing phrasing.

KX080-5 MSRP, configured dealer prices, and used asking prices

Three different kinds of price appear in KX080 research, and they are not interchangeable. Kubota’s KX Series page lists the KX080-5 at an MSRP as low as $138,273, and its own footnote states that this figure excludes tax, dealer fees, and optional equipment. Dealer listings quote configured asking prices: Kitsap Tractor advertises a 2026 KX080-5 at $123,900 with the price explicitly including an angle blade, K7402A coupler, K7405A hydraulic thumb, and K7427 24-inch dig bucket. Marketplace listings add used and near-new asking prices: MachineryTrader shows a 2025 KX080-5 listed at USD $125,000 and a 2015 KX080-4 listed at USD $39,600.

Price type	Example figure	What it includes	Source
Manufacturer MSRP	$138,273 (as low as)	Base machine; excludes tax, dealer fees, optional equipment	Kubota KX Series page
Configured dealer asking price	$123,900 (2026 KX080-5)	Angle blade, K7402A coupler, K7405A thumb, K7427 24” bucket	Kitsap Tractor listing
Near-new used asking price	$125,000 (2025 KX080-5)	Listing-specific equipment	MachineryTrader listing
Older-generation used asking price	$39,600 (2015 KX080-4)	Listing-specific equipment	MachineryTrader listing

Two interpretation rules keep these numbers honest. First, all of them are advertised prices at the time each page was captured; none is evidence of what any machine actually sold for, and none establishes depreciation, fuel consumption, or total ownership cost. Those figures are simply not in the supplied documentation and should not be estimated from asking prices. Second, comparisons only work when the machines are normalized. A configured dealer price that includes a coupler, thumb, and bucket can legitimately sit below a base MSRP that includes none of them, as the Kitsap and Kubota figures show. Before comparing any two prices, line up the year, hours, generation suffix, track type, blade type, cab equipment, auxiliary circuits, coupler, thumb, buckets, and any other included attachments. The $39,600 KX080-4 and the $125,000 KX080-5 on MachineryTrader are a decade apart in build date and a full generation apart in specification, so the gap between them says little about either machine’s value without that context.

KX080-3, KX080-4 variants, and KX080-5 differences

The KX080 name spans machines with different engines and different output ratings, and used listings routinely mix them together. The documented snapshots below keep each specification attached to its variant. These are sourced facts about each machine individually, not a complete change history; the supplied documentation does not establish exactly which features first appeared at which model transition.

Variant	Engine	Documented output	Documented features	Source
KX080-3	V3800-DI	64.2 hp gross	Midi excavator classification	RitchieSpecs
KX080-4A	V3307-CR-TE4	63.2 PS at 2000 rpm (ISO 9249 net)	Water-cooled diesel with CRS and DPF	Herts Tools KX080-4A sheet
KX080-4 Super Series 2	V3307-CR-TE5	66.6 hp gross (SAE J1995) / 62.3 hp net (SAE J1349) at 2000 rpm	Automatic DPF regeneration; hydraulic angle blade with rocker-switch control	Kubota KX080-4S2 brochure
KX080-5	V3307-CR-TE5	66.6 hp published (62.3 hp also listed; labels not preserved in extraction)	2-pump load-sensing hydraulics, auto-shift travel, Engine Auto Stop, Auto Idling System, standard air suspension seat, 7-inch LCD monitor, keyless start	Kubota spec sheet and launch announcement

Several practical points follow from this table. The KX080-3 uses an entirely different engine (the V3800-DI) from every later variant, so its 64.2 hp gross rating is not a lower-output version of the same powerplant. The KX080-4A’s 63.2 figure is a net rating in PS under ISO 9249, which cannot be compared directly against a gross SAE figure; a buyer glancing at “63.2 vs 66.6” would be comparing different standards and different units. The KX080-4S2 and KX080-5 share the V3307-CR-TE5 engine and the same 66.6/62.3 output pair, which means the generation change is not primarily an engine-power story; Kubota’s KX080-5 launch material instead emphasizes standard operator equipment and hydraulic and idle-management systems.

For a used-market buyer, the operational rule is simple: never let a specification travel across a suffix boundary. A digging depth, weight, flow figure, or horsepower number is only valid for the exact variant on the source document. When a listing says only “KX080,” treat the generation as unknown until the full model designation, and ideally the serial-number-verified build, is confirmed.

KX080 configuration checklist before you compare or buy

Two KX080 listings at similar prices can be very different machines. Kubota’s own spec sheet shows operating weight varying by up to 1,100 lb across track and blade configurations, and the Kitsap Tractor and MachineryTrader listings show couplers, thumbs, buckets, and cab equipment bundled differently from one advertisement to the next. Recording the following details for every quote or listing puts comparisons on a common footing.

• Full model suffix and year. “KX080” alone is ambiguous; record KX080-3, KX080-4A, KX080-4S2, KX080-5, or a designation like KX080-5R3A, plus model year and hours.
• Track type. Rubber or steel, per Kubota’s spec sheet options; this changes operating weight and surface impact.
• Blade. Straight or angle blade, and whether float is included; Kitsap Tractor lists the angle blade with float as the grading and backfilling option.
• Cab and operator equipment. Enclosed cab versus canopy, and whether features Kubota lists as standard on the KX080-5 (air suspension seat, 7-inch LCD monitor, keyless start) are present on the specific unit.
• Auxiliary circuits. Number of circuits, documented flows, and whether the third circuit Kitsap Tractor describes for thumb or diverter use is fitted.
• Coupler and thumb. Exact coupler model (for example, K7402A in the Kitsap configuration) and whether a hydraulic thumb (such as the K7405A) is included.
• Buckets and other attachments. Sizes and models included, such as the K7427 24-inch dig bucket in the Kitsap listing, and any additional attachments in the price.
• What the quoted price covers. Whether the figure is a base MSRP excluding tax, dealer fees, and optional equipment (as Kubota’s KX Series footnote specifies) or a configured price with named equipment included.

With these fields filled in, the earlier sections become usable: the configured weight feeds the transport check, the circuit and coupler details feed the attachment check, and the included-equipment list makes price comparisons meaningful instead of misleading. Any field the seller cannot answer is a gap to resolve before money changes hands, not a detail to assume.

Ownership features and documentation to verify

The documented ownership picture for the KX080-5 covers design features, not maintenance schedules, and buyers should keep the two separate. On the documented side, the Krebs Kubota page lists specific serviceability features: front pin bushings for durability, centralized swivel bearing lubrication, protected cylinder hoses, steel hood panels, one-sided engine maintenance, and wide hood openings for access to the engine and other components. Krebs also notes that Kubota excavators run Tier 4 emission engines. Kubota’s launch announcement documents two idle-management functions that affect fuel use and engine hours: a programmable Engine Auto Stop that shuts the engine off when idling for up to 30 minutes, and an Auto Idling System that reduces engine RPM when the control levers sit in neutral for more than 4 seconds.

Emissions-system maintenance is documented only for the previous generation. Kubota’s KX080-4 Super Series 2 brochure describes an automatic regeneration system that burns accumulated soot in the DPF muffler to keep it clean for longer operation. That is useful context for how Kubota handles DPF management, but it is a KX080-4S2 statement, and the current KX080-5 procedure should be confirmed from current documentation rather than assumed identical.

That leads to the documents a buyer still needs to obtain, because none of them appears in the supplied evidence: the current KX080-5 operator manual, the service schedule with fluid and filter intervals, the DPF regeneration procedure for this model, fluid specifications, the rated lift chart over the front and side at multiple radii and blade positions, and the applicable warranty terms for the base machine and any attachments. For a used machine, add complete service records and verification of any remaining warranty. A machine that checks out on specifications, configuration, and price can still fail this documentation review, so treat these items as conditions of purchase rather than paperwork to collect afterward.