Exmark MK606 606 Mulch Kit Review

Overview

The Exmark MK606 606 Mulch Kit isn’t a lawn mower itself—it’s a precision-engineered accessory designed to convert select Exmark commercial mowers into high-performance mulching machines. Priced at $581.99 with a near-perfect 4.8 out of 5 rating from verified owners, this kit is built for landscape professionals and serious property owners who demand that “no clippings visible” finish. If you run an Exmark Lazer Z, Lazer Z X-Series, or similar model, this kit eliminates bagging and side-discharge hassles by recirculating clippings into fine, lawn-feeding particles.

Who Should Buy This

• Commercial landscapers with Exmark zero-turn mowers – If your crew mows 20+ lawns weekly, this kit saves hours by eliminating bagging and disposal. The fine mulch returns nitrogen to the soil, reducing fertilizer needs.
• Homeowners with large, manicured estates (2+ acres) – You already invested in an Exmark mower. This kit gives you that golf-course-quality cut without leaving windrows or clumps on your turf.
• Property managers who hate bagging – If you’re tired of hauling heavy grass bags to the curb or dealing with composting piles, this kit lets you leave clippings where they belong—on the lawn.
• Turf enthusiasts who want the healthiest grass – Mulching returns organic matter and moisture to the soil. This kit’s precision baffles ensure clippings are cut fine enough to decompose quickly, feeding your lawn naturally.

Key Features Breakdown

Exmark’s “606” Baffle Design – The kit’s centerpiece is a specially shaped baffle system that creates a powerful vacuum inside the deck. Unlike generic mulch kits, this design keeps clippings suspended and recut multiple times before settling. The result? No visible clippings, even on fast-growing Bermuda or tall fescue.

Precision-Fit Construction – This isn’t a universal kit. The MK606 bolts directly to Exmark’s 60-inch fabricated decks with zero gaps. You won’t waste time cutting or shimming parts. Expect a 15-minute install with basic hand tools.

Heavy-Gauge Steel Components – The baffles and covers are made from thick, powder-coated steel that withstands rocks, roots, and daily commercial abuse. Unlike stamped steel kits that warp, this holds its shape season after season.

Compatibility with Exmark Lazer Z and Lazer Z X-Series – Specifically designed for 60-inch decks on these popular models. If you own a different Exmark (like the Radius or Quest), double-check fitment before ordering—this kit isn’t universal.

No Additional Blades Required – The MK606 works with standard Exmark mulch blades (sold separately if you don’t already have them). Many owners report excellent results using factory high-lift blades, though switching to dedicated mulch blades improves performance on thick, wet grass.

Tool-Free Discharge Plug – Switching between mulching and side-discharge modes takes seconds. The included plug slides in and out without tools, letting you adapt to conditions (e.g., mulching in dry weather, discharging when grass is wet).

Pros

1. Near-perfect mulching quality – Owners consistently report zero visible clippings after mowing, even with lush, fast-growing grass. The fine particles disappear into the lawn within 24 hours.
2. Durable commercial-grade build – The steel baffles resist bending and rust. This kit will outlast multiple residential mowers.
3. Quick mode switching – The tool-less discharge plug lets you go from mulching to side-discharge in under 30 seconds. Handy when you hit a patch of wet, clumpy grass.
4. Saves time and money – No more stopping to empty bags. For commercial operators, this can cut mowing time by 20-30% on large properties.
5. Improves lawn health – Finely mulched clippings return nitrogen and moisture to the soil, reducing fertilizer costs by up to 25% over a season.
6. Straightforward installation – Most users complete the install in under 20 minutes with basic sockets and wrenches. No drilling or modifications required.

Cons

1. Premium price – At $582, this kit costs more than many complete residential mowers. It’s an investment, not an impulse buy.
2. Limited compatibility – Works only with specific Exmark 60-inch decks. If you upgrade mowers or own a different brand, this kit becomes expensive scrap metal.
3. Requires mulch blades for best results – While it works with standard blades, you’ll want proper mulch blades (another $40-60) for optimal performance on thick, damp grass.
4. Not ideal for wet grass – Even with this kit, mulching wet, tall grass can leave clumps. You’ll still need to side-discharge or bag in rainy conditions.

Bottom Line

The Exmark MK606 606 Mulch Kit is the gold standard for turning your Exmark commercial zero-turn into a mulching beast. Yes, $582 is steep, but for professionals or serious homeowners who already own a compatible Exmark, it’s a no-brainer upgrade. The build quality is bulletproof, the mulching results are genuinely impressive, and the time savings from eliminating bagging add up fast. If you mow more than 2 acres weekly and want a pristine finish without the hassle of clippings, buy it. If you’re on a tight budget or own a different mower brand, look elsewhere—this kit is purpose-built for Exmark owners who demand the best.

Frequently Asked Questions

Will this kit fit my Exmark Lazer Z with a 60-inch deck?
Yes, if your Lazer Z is a current model or within the last 5-7 years. Check your deck’s serial number against Exmark’s compatibility list. Older Lazer Z models (pre-2010) may require a different kit.

Do I need to buy special blades for this mulch kit?
You can use your existing high-lift blades, but dedicated Exmark mulch blades significantly improve performance—especially on thick, lush grass. Expect to spend an extra $40-60 for a set.

How long does installation take?
Most owners report 15-20 minutes with basic hand tools (socket set, wrenches). The kit includes all hardware and clear instructions. No drilling or cutting required.