Quick Answer: The Walker T27i (about $20,280-$29,430 depending on dealer and configuration, per current listings) is the best all-round Walker zero-turn for crews collecting clippings daily — a 26.5 HP Kohler EFI commercial tractor built around the brand’s exclusive GHS collection system. Homeowners and small properties do well with the S18 (from about $13,750, 18 HP Briggs Vanguard, deck options from 36” to 56”), crews wanting a lower-cost collection machine step down to the C23i (from about $18,500, 23 HP Kohler EFI, 52” deck, 10-bushel catcher), and municipal or fleet buyers standardized on diesel should look at the D21d (about $24,900, 20.9 HP Kubota diesel).
Here’s what sets Walker apart from every other brand covered on this site: grass collection isn’t a bolt-on attachment, it’s the core design. Per Walker’s own product pages, the rear-discharge deck feeds clippings straight into an internal 10-inch paddle-wheel blower that packs them into a low-profile, rear-mounted catcher built into the tractor’s own footprint — no external bagger hanging off the back like the aftermarket units covered in our best zero-turn mower bagger guide. The tractor and deck also sell as separate components, so one chassis can run multiple deck widths depending on the job. And unlike most of the brands already covered here, Walker has stayed independent since Max Walker built the first unit in Fort Collins, Colorado in 1980 — still owned and run today by brothers Bob and Dean Walker rather than a holding company. Here’s how the current lineup compares.
Walker zero-turn mowers, compared
| Model | Best for | Deck | Engine | Collection | Price | Rating |
|---|---|---|---|---|---|---|
| T27i | Best overall | Fits Walker collection decks | 26.5 HP Kohler EFI | GHS, built-in | ~$20,280+ | ★★★★★ |
| S18 | Best budget / residential | 36"-56" | 18 HP Briggs & Stratton Vanguard | GHS, built-in | ~$13,750+ | ★★★★☆ |
| C23i | Best value commercial | 52", 10-bushel catcher | 23 HP Kohler EFI | GHS, built-in | ~$18,500+ | ★★★★½ |
| D21d | Best diesel / fleet | Fits Walker collection decks | 20.9 HP Kubota diesel (3-cyl.) | GHS, built-in | ~$24,900+ | ★★★★★ |
1. Walker T27i — Best Overall
Walker T27i
- Walker's Model T line is built for commercial and fleet duty, and the T27i tops it with a 26.5 HP Kohler Command Pro ECH749 EFI engine — a step up from the entry T23's 23 HP Kohler CH680, per Walker's own model pages.
- Runs Walker's GHS collection system as standard, packing clippings into a rear catcher rather than requiring a separate bagger attachment like most commercial mowers from other brands.
- Current dealer listings show real spread — roughly $20,280 to $29,430 depending on deck configuration and dealer, so it's worth cross-shopping before committing to one dealer's number.
Keeping a T27i running through a full collection season means having spare blades and filters on hand rather than waiting on a dealer order — a free 30-day Amazon Prime trial gets replacement parts to your door in two days. Try Prime free for 30 days.
For how the T27i stacks up against other brands’ commercial-tier machines, see our best commercial zero-turn mower guide.
2. Walker S18 — Best Budget / Residential
Walker S18
- Walker's entry chassis, powered by an 18 HP Briggs & Stratton Vanguard engine and rated to run deck widths from 36" up to 56" — more deck flexibility on one tractor than most residential zero-turns offer.
- Still ships with Walker's built-in GHS collection deck, so buyers get the brand's signature no-bagger-attachment collection even at the residential price point.
- For homeowners deciding whether a Walker-style collection machine makes sense versus a standard residential zero-turn, see our [best residential zero-turn mower guide](/best/best-residential-zero-turn-mower/).
For homeowners weighing Walker’s residential tier against other brands’ entry machines, see our best zero-turn mower for the money guide.
3. Walker C23i — Best Value Commercial
Walker C23i
- Pairs a 23 HP Kohler Command Pro ECH730 EFI engine with a 52" deck and a 10-bushel collection unit, per Walker's own model page — the brand's mid-tier balance of commercial durability and collection capacity.
- Priced several thousand below the flagship T27i while keeping the same GHS collection design, similar to how this site's [best Exmark zero-turn mower guide](/best/best-exmark-zero-turn-mower/) frames Exmark's Radius as the value-commercial step below its own flagship.
- A practical pick for crews who want commercial-grade collection without the T27i's higher horsepower and price.
For a wider comparison of mid-tier commercial machines by acreage, see our best zero-turn mower for 5 acres guide.
4. Walker D21d — Best Diesel / Fleet
Walker D21d
- Swaps Walker's usual Kohler or Briggs gas engines for a 20.9 HP three-cylinder, liquid-cooled Kubota D722 diesel with a self-cleaning radiator, per Walker's own product page — built for municipal and institutional fleets already standardized on diesel.
- Keeps the same GHS collection system as the rest of the Model D-and-up lineup, so fleet buyers don't trade away Walker's core differentiator for diesel torque and fuel efficiency.
- At around $24,900, it's the most expensive Walker in this roundup — the clearest fit is crews already running diesel service trucks and fuel infrastructure, not homeowners comparing per-acre cost.
For operations weighing diesel against gas EFI options across brands, see our best diesel zero-turn mower guide.
How the Walker lineup fits together
- Every current Walker model runs the same GHS collection system — clippings blow internally from the deck into a rear catcher built into the tractor’s footprint, rather than requiring the external bagger attachments covered in our best zero-turn mower bagger guide.
- Tractor and deck sell as separate components — a single chassis like the S18 can run different deck widths (36” to 56”), a modular approach most other brands on this site don’t offer.
- Walker has stayed independent since 1980 — still owned and run by brothers Bob and Dean Walker out of Fort Collins, Colorado, unlike several other brands here now owned by Toro, Alamo Group, or other holding companies.
- Horsepower scales with tier, but diesel trades horsepower for torque — the D21d’s 20.9 HP Kubota diesel sits below the T27i’s 26.5 HP gas EFI on paper, but suits fleets prioritizing torque and fuel efficiency over peak horsepower.
- Kohler- and Briggs-powered Walker models follow the same service rhythm as other brands using those engines — see our oil change guide for the correct interval and oil weight.
- OEM vs. aftermarket parts decisions apply the same way on a Walker as any other brand — see our zero-turn mower parts guide for which components are safe to buy aftermarket.
The bottom line
For most crews collecting clippings daily, the T27i is the best all-round pick in Walker’s current lineup. Homeowners and small properties do well with the S18, crews wanting a lower-cost collection machine should look at the C23i, and municipal or fleet buyers standardized on diesel should step up to the D21d. For how Walker’s built-in collection compares against other brands’ bagger attachments, see our best zero-turn mower bagger guide, or for the full field of brands see our best zero-turn mower guide.
Last updated: September 22, 2026 — deck sizes, engine options, and collection-system details verified against Walker’s own site (walker.com) and current dealer listings (AllMachines, TractorHouse); pricing cross-checked across multiple current dealer listings given real spread by configuration; company history verified against Walker’s own “Our Story” page.