Which is lighter, the Asics Novablast 3 or the Novablast 4?

The Asics Novablast 3, by 0.2 oz in a men's US 9 (8.9 oz vs 9.1 oz).

Do the Asics Novablast 3 and Novablast 4 come in the same widths?

Yes. Both run in D, 2E for men's sizes, so a width that fit in the Novablast 3 carries over to the Novablast 4.

How do the stack heights compare?

31 mm heel and 23 mm forefoot on the Asics Novablast 3, against 41.5 mm and 33.5 mm on the Novablast 4. That is 10.5 mm more under the heel and 10.5 mm more under the forefoot. See the stack height note in the table above: the published figures changed convention mid-lineage.

Is the Novablast 4 still the newest Novablast?

No. The Novablast 5 replaced it in 2024, so the Novablast 4 now sells as an older model and usually below its $140 list price.

Asics Novablast 3 vs Novablast 4

Updated August 2, 2026. Specs are men's US 9.

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THE SHORT ANSWER

Whichever your size still exists in. The Novablast 3 is discontinued at retail, so remaining pairs sell against a thinning size run, while the Novablast 4 has a full one.

Asics Novablast 3Sizes running outWomen's
Asics Novablast 4Sizes running outMen's at Amazon Women's

Availability last checked Aug 2, 2026. Prices and stock change without notice.

Novablast 3 · 2022

Novablast 4 · 2023

Every spec, side by side

Spec	Novablast 3	Novablast 4
FIT AND WEIGHT
Weight	8.9 oz	9.1 oz
Widths	D, 2E	D, 2E
Upper	Knit mesh with a gusseted tongue wing	Woven upper with a stretch tongue
	Much plusher tongue: 5.8 mm of padding against the 3's 1.3.
CUSHIONING GEOMETRY
Heel stack	31 mm	41.5 mm
	Almost entirely a quoting-convention change: the 4 is the first Novablast quoted with sockliner and outsole included, the same 2023 re-basing Asics applied to the Gel-Nimbus and Gel-Kayano. RunRepeat's lab put the real heel gain around 2 mm (37.2 to 39.2).
Forefoot stack	23 mm	33.5 mm
Drop	8 mm	8 mm
MATERIALS
Midsole	FF Blast+	FF Blast+ Eco
	20 percent bio-based and noticeably firmer and denser. The 3's wow-bounce was dialed back on purpose, and it split the base.
VALUE
List price at launch	$140	$140
OTHER CHANGES
Platform	5 mm wider than the 2	Another 5 mm wider, the widest in the line
	Together with the firmer foam, this is what made the 4 the stable one.
Outsole	3.1 mm AHAR Lo	3.9 mm AHAR Lo
	Thicker and more durable, but the wet-grip complaints did not go away.

Weighing whether to switch at all, rather than which of these two to buy? What replaced the Asics Novablast 3 covers the verdict on the update, what loyalists made of it, and the closest alternatives from other brands.

Buy the Novablast 3

Sizes running out

Discontinued at retail. Amazon carries what remains, so treat an in-stock size as a closing window, and expect prices to swing.

Men's stock is gone.

Women's: Check remaining stock

Availability last checked Aug 2, 2026.

Buy the Novablast 4

Sizes running out

Discontinued at retail. Amazon carries what remains, so treat an in-stock size as a closing window, and expect prices to swing.

Men's: Check remaining stock Women's: Check remaining stock

Availability last checked Aug 2, 2026.

Questions runners ask

Which is lighter, the Asics Novablast 3 or the Novablast 4?: The Asics Novablast 3, by 0.2 oz in a men's US 9 (8.9 oz vs 9.1 oz).
Do the Asics Novablast 3 and Novablast 4 come in the same widths?: Yes. Both run in D, 2E for men's sizes, so a width that fit in the Novablast 3 carries over to the Novablast 4.
How do the stack heights compare?: 31 mm heel and 23 mm forefoot on the Asics Novablast 3, against 41.5 mm and 33.5 mm on the Novablast 4. That is 10.5 mm more under the heel and 10.5 mm more under the forefoot. See the stack height note in the table above: the published figures changed convention mid-lineage.
Is the Novablast 4 still the newest Novablast?: No. The Novablast 5 replaced it in 2024, so the Novablast 4 now sells as an older model and usually below its $140 list price.