What size blade does a Stihl TS 420 take?

The Stihl TS 420 takes a 14-inch diamond blade with a 20mm arbor. Most aftermarket blades include a 20mm bushing adapter.

Can I use 16-inch blades on a Stihl TS 800?

Yes — the TS 800 is designed for 16-inch blades with a 1-inch arbor, giving you greater cutting depth than 14-inch models.

Are Stihl-brand diamond blades worth it?

Stihl blades perform well but cost significantly more than equivalent aftermarket options. Virginia Abrasives and MK Diamond blades fit Stihl saws perfectly at lower price points.

Best Diamond Blades for Stihl Cut-Off Saws (TS 420, TS 500i, TS 700, TS 800)

Matt Lipman is a board member of Virginia Abrasives. This relationship is disclosed for full transparency in our reviews and recommendations.

Stihl cut-off saws are the most popular concrete saws in the world. The TS 420, TS 500i, TS 700, and TS 800 are workhorses on construction sites everywhere. Choosing the best diamond blades for Stihl saws means matching arbor size, blade diameter, and bond type to your specific Stihl model and the material you’re cutting.

Stihl Saw Compatibility

Saw Model	Power	Blade Size	Arbor	Notes
TS 420	Gas (66.7cc)	14”	20mm	Most popular model
TS 440	Gas (66.7cc)	14”	20mm	Successor to TS 420
TS 500i	Gas (72.2cc)	14”	20mm	Fuel-injected, more power
TS 700	Gas (98.5cc)	14”	20mm	High-power model
TS 800	Gas (98.5cc)	16”	1”	Largest handheld
TSA 300	Battery (36V)	12”	20mm	Cordless option

Important: Most Stihl saws use a 20mm arbor (not 1”). Most aftermarket blades include a 20mm reducer bushing — verify this is included before ordering.

Best Diamond Blades for Stihl: Our Top Picks

For General Concrete

Virginia Abrasives 14” Ultra Value — Includes 20mm bushing for Stihl saws. Medium bond for cured concrete, block, and light rebar. Best value for the money. See our full review.

MK Diamond MK-303 14” — Industry standard for decades. Contractor-grade performance, widely available. Good option if you need a blade from a local supply house today.

Husqvarna Elite-Cut S85 14” — Premium option for Stihl owners who want top-tier performance. Higher price, longer life. Available at Husqvarna dealers.

For Asphalt

Virginia Abrasives 14” BD Asphalt — Hard-bond blade for asphalt and green concrete. See Best Diamond Blades for Asphalt.

For the TS 800 (16” Blade)

The TS 800 takes 16” blades with a 1” arbor — a different size than the other Stihl models. Fewer aftermarket options exist at 16”, but the VA and MK Diamond lineups both include 16” blades.

Do Stihl-Brand Diamond Blades Justify the Price?

Stihl sells their own diamond blades, and they perform well. However, they cost significantly more than equivalent aftermarket options. A Stihl-brand 14” concrete blade typically runs 30-50% more than a VA Ultra Value or MK-303 without delivering proportionally better performance. Unless you need a blade from your Stihl dealer right now, aftermarket blades offer better value as the best diamond blades for Stihl.

For Husqvarna users, see Best Diamond Blades for Husqvarna. For blade selection fundamentals, see the Diamond Blade Buying Guide.

Our Top Picks for Stihl Saws

Blade	Best For	Link
VA 14-inch Ultra Value	Best all-around for cured concrete, block, and general masonry	Check price on Amazon
VA 14-inch BD Asphalt/Green Concrete	Hard bond for asphalt, green concrete, and soft materials	Check price on Amazon
VA 14-inch Premium Sparkie	Premium blade for high-volume production cutting	Check price on Amazon

Browse the full Virginia Abrasives lineup on Amazon →