Exmark Lazer Z X-Series (LRX 72" 921)
Commercial mower · Model LRX921GKA726Q1 · Commercial-duty · Gas
$19,899 Exmark list price
Manufacturer list price only — it excludes tax, freight, dealer setup and any local discount, and dealers set the final price.
- Weighs 1,304 lb
- On a 6×12 trailer 2,204 lb towed, single-axle 3,500 lb
- Mows an acre in 13 min (9 at top speed) How long for your yard? ›
- How these are worked out ›
The Exmark Lazer Z X-Series (LRX 72 in 921) is a commercial-grade gas commercial mower, built for daily commercial mowing, with a 72-inch deck and a 999cc engine making 31 hp. It weighs 1304 lb (591.5 kg).
At a glance
Compare similar mowers See how this mower compares with machines of a similar size and purpose.
Chosen by stated rules, not opinion: same class, a deck within 8 in of this one, the same kind of power and a compatible duty class, then the closest power, weight and price, with other makers preferred. Figures are the manufacturers’ published ones; nothing is estimated.
Engine
| Power Source | gas |
|---|---|
| Engine Make | Kawasaki FX921V |
| Displacement | 61 ci (999 cc) |
| Engine Power | 31 hp |
Deck
| Cutting Width | 72 in (1829 mm) |
|---|---|
| Deck Material | 10-gauge top, 7-gauge side skirt steel |
| Deck Gauge | 10 |
| Max Cut Height | 5.5 in (140 mm) |
| Min Cut Height | 1 in (25 mm) |
Drive
| Ground Speed | 11.5 mph |
|---|
Dimensions
| Weight | 1304 lbs (591.5 kg) |
|---|---|
| Fuel Capacity | 12 gal (45.4 L) |
| Length | 86.1 in (2187 mm) |
| Width | 84.9 in (2156 mm) |
| Height | 70.5 in (1791 mm) |
Professional use
How the Lazer Z X-Series (LRX 72 in 921) fits commercial and high-acreage work, from the specs we have. Duty class: Commercial.
Productivity computed from deck width and ground speed. Compare on the calculator ›
| Deck width | 72 in |
|---|---|
| Engine make | Kawasaki FX921V |
| Engine displacement | 999 cc |
| Engine power | 31 hp |
| Ground speed | 11.5 mph |
| Cut-height range | 25 mm – 140 mm |
| Fuel capacity | 45.4 L |
| Weight | 591.5 kg |
| Deck construction | 10-gauge top, 7-gauge side skirt steel |
| Deck gauge | 10 ga |
Exmark doesn’t publish 9 of these for the Lazer Z X-Series (LRX 72 in 921): transmission, drive type, warranty, commercial warranty, spindle type, frame construction, anti-scalp rollers, drive tire size, seat type.
Head-to-head: vs Ferris ISX 3300 Zero Turn Mowers (72 in / 5902145)
See the Exmark commercial pro hub › · Professional buying hub ›
Similar models
Other commercial mowers with comparable specs — including other brands — that buyers cross-shop with the Lazer Z X-Series (LRX 72 in 921).
Specs verified against the retailer listing on Jun 6, 2026 — altmantractor.com.
See every mower with a Kawasaki FX921V engine ›
What the parts on this spec sheet mean
Other Exmark Lazer Z X-Series models › 10 more in this range: Exmark Lazer Z X-Series Mower, Lazer Z X-Series (LRX 60 in 801), Lazer Z X-Series (LRX 60 in 820), Lazer Z X-Series (LRX 60 in 921) and more
See all Exmark mowers and specs ›
Spot a wrong spec? Suggest a correction.
Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.
What the specs work out to
Figures MowerFacts computes from Exmark’s own numbers — not published by the manufacturer.
Mowing time
- ¼ acre3 min 2 min
- ½ acre6 min 4 min
- 1 acre13 min 9 min
- 2 acres26 min 18 min
- 5 acres1 h 4 min 45 min
- 10 acres2 h 8 min 1 h 30 min
About 13 min per acre at 4.68 acres/hour, mowing at 8.0 mph. The second figure is at the published 11.5 mph top speed (6.69 acres/hour) — faster than anyone really mows. About 56.2 acres per tank.
Weight & hauling
- Machine weight1,304 lb
- + 6×12 trailer900 lb
- Towed weight2,204 lb
- single-axle 3,500 lbCarries it, 1,296 lb spare
- tandem-axle 7,000 lbCarries it, 4,796 lb spare
Needs a single-axle 3,500 lb trailer and a vehicle rated to tow at least 2,204 lb.
Gate & trailer fit
- 32 in gateToo wide
- 36 in gateToo wide
- 48 in gateToo wide
Needs at least 85 in of clearance.
Power & run time
- Power per deck inch0.431 hp/in
- Run time per tank~12.0 h
Mowing times assume 4.68 acres/hour: deck width x 8.0 mph at 80% efficiency, which allows for overlap, turns and trimming. 8.0 mph is 70% of the 11.5 mph top speed Exmark publishes - almost nobody mows flat out. The "at top speed" figure is the same sum at 11.5 mph, shown so you can see it.
Fit uses Exmark's published overall width.
Towed weight adds a 900 lb allowance for a 6x12 open utility trailer to Exmark's published machine weight. Your trailer's own weight is on its VIN plate. Tongue weight, axle placement and your vehicle's tow rating are still yours to check — this is the load, not a loading plan.
Run time assumes a typical 1 gal/hour burn at working load; real consumption varies with engine, load and cut.
Exmark Lazer Z X-Series (LRX 72 in 921) questions
What size deck is on the Exmark Lazer Z X-Series (LRX 72 in 921)?
The Exmark Lazer Z X-Series (LRX 72 in 921) has a 72-inch (1829 mm) cutting deck with 10-gauge top, 7-gauge side skirt steel construction.
What engine is in the Exmark Lazer Z X-Series (LRX 72 in 921)?
The Exmark Lazer Z X-Series (LRX 72 in 921) is powered by a Kawasaki FX921V, 999 cc, 31 hp. Horsepower is the manufacturer's own rating.
How much does the Exmark Lazer Z X-Series (LRX 72 in 921) weigh?
The Exmark Lazer Z X-Series (LRX 72 in 921) weighs 1,304 lb (591.5 kg) as specified by Exmark.
What size trailer do I need for the Exmark Lazer Z X-Series (LRX 72 in 921)?
At 1,304 lb, the Exmark Lazer Z X-Series (LRX 72 in 921) on a typical 6x12 open utility trailer (about 900 lb empty) is roughly 2,204 lb of towed weight. That is within a single-axle 3,500 lb trailer, and your tow vehicle needs to be rated for at least 2,204 lb. Tongue weight, axle placement and your own trailer's empty weight still have to be checked — this is the arithmetic, not a loading plan.
How fast is the Exmark Lazer Z X-Series (LRX 72 in 921)?
Top ground speed is 11.5 mph. With its 72-inch deck that works out to about 6.69 acres per hour at 80% efficiency — allowing for overlap, turns and trimming.
How long does the Exmark Lazer Z X-Series (LRX 72 in 921) take to mow an acre?
About 9 min per acre, from its 72-inch deck at 11.5 mph and 80% efficiency — roughly 6.69 acres an hour, so five acres is about 45 min. Rough or obstacle-heavy ground takes longer; this is deck width times ground speed, not a timed test.
How big is the fuel tank on the Exmark Lazer Z X-Series (LRX 72 in 921)?
The Exmark Lazer Z X-Series (LRX 72 in 921) holds 12 gal (45.4 L) of fuel.
How much does the Exmark Lazer Z X-Series (LRX 72 in 921) cost?
Exmark's published list price is $19,899, checked 22 October 2026. That excludes tax, freight, dealer setup and any local discount — dealers set the final price.
What is the Exmark Lazer Z X-Series (LRX 72 in 921) built for?
Commercial-duty commercial mower. Built for daily, paid commercial use.
Source: Exmark (manufacturer) · archived copy