The Asics Hyperspeed 4 is one of the lightest non-plated trainers on the Indian market. At 186 g, a 5 mm drop, and a 27/22 mm stack on FF Blast Plus Eco foam, it is built for short-race light trainer duty. At ₹9,999, it is also one of the cheapest legitimate lightweight options. The case for buying is empirical — match the shoe to verified use cases, not to marketing.
Specifications and what they tell us
The Hyperspeed 4 weighs 186 g in a US 9 men's, drops 5 mm, stacks 27 mm heel and 22 mm forefoot, uses FF Blast Plus Eco foam, has no plate, and is positioned by Asics as a short-race light trainer. List price in India is ₹9,999.
The weight is the headline. A 2020 review in Sports Medicine by Hoogkamer et al. confirmed earlier work showing that a 100 g reduction in shoe mass yields roughly a 1% improvement in running economy. The Hyperspeed 4 at 186 g is meaningfully lighter than most competitor lightweight dailies, which sit in the 200 to 230 g range. The implied economy edge is real, though small in absolute terms.
What FF Blast Plus Eco delivers
FF Blast Plus Eco is Asics's EVA-based midsole compound with bio-based content. It is not a PEBA foam. The implication: less energy return than PEBA-based competitors like the New Balance FuelCell Rebel v5 or Saucony Kinvara's PWRRUN, but greater durability under repeated loading. A 2024 review in the International Journal of Sports Science and Coaching reported that EVA-based foams retain energy-return characteristics longer than PEBA-based foams across the typical 500 to 1,000 km use window. The Hyperspeed 4's longevity advantage is structural.
Where the Hyperspeed 4 earns its place
The shoe is a specialist within its category. Specifically, it is a short-race light trainer — Asics's own label. The verified intended use is short-distance racing and light training rather than daily volume. This matters.
For an Indian runner targeting 5K and 10K races, the Hyperspeed 4 is a defensible single-shoe choice. At 186 g, it minimises the metabolic penalty of shoe weight across short distances. For a 21.1 km goal, the shoe still works but the case weakens — the 27/22 mm stack is moderate, and longer efforts accumulate underfoot fatigue faster than in a higher-stack daily.
Comparing against the lightweight daily field
Direct alternatives at this price band: the Saucony Kinvara 15 at ₹12,499 (210 g, PWRRUN), the New Balance FuelCell Rebel v5 at ₹13,495 (215 g, PEBA blend), and various unplated entries from Brooks and Mizuno. The Hyperspeed 4 is the lightest and the cheapest. The trade-off is foam compound — EVA-based versus PEBA-based — and underfoot feel.
A 2023 study in the European Journal of Applied Physiology (Joubert and Jones) tested non-plated lightweight shoes and reported smaller-magnitude economy gains from PEBA-based foams in the absence of a plate. The implication: the Hyperspeed 4's lower foam tech is less of a disadvantage than headline marketing claims suggest. For category context, the running shoe library covers comparable shoes, and the Asics hub covers the rest of the lineup.
Fit, durability, and the Indian climate factor
Asics builds the Hyperspeed 4 on a moderately tapered last with a snug midfoot and modest forefoot room. The fit is closer to a racing fit than a typical daily trainer. Most runners will find their usual size correct, though wide-footed runners may want to try a half-size up.
The upper is light engineered mesh, which is advantageous in humid coastal conditions in Mumbai, Chennai, and Kochi. The mesh dries faster than denser uppers found on max-cushion daily trainers. The trade-off is lower lateral support, which matters less at short race distances than in long daily training.
Durability planning
The EVA-based foam holds energy return longer than PEBA-based foams. Plan a realistic life of 700 to 1,000 km in the Hyperspeed 4 — meaningfully longer than the 500 to 700 km plan for a Rebel v5 or Kinvara 15. The lower price combined with the higher durability changes the cost-per-kilometre calculation. At ₹9,999 for 800 km, the shoe costs roughly ₹12.50 per km. At ₹13,495 for 600 km, the Rebel v5 costs roughly ₹22.50 per km.
Use cases by goal race
Match the shoe to the goal honestly.
5K and 10K
Strong fit. The Hyperspeed 4's weight is its strongest argument at these distances. The 27/22 mm stack is sufficient for the duration, and the FF Blast Plus Eco's responsiveness suits short fast efforts. Replace one of two weekly quality sessions with the Hyperspeed 4 during a 5K or 10K build.
Half marathon
Workable. The shoe handles 21.1 km but the underfoot fatigue accumulates faster than in a higher-stack daily. For sub-1:30 to sub-1:40 goals, the Hyperspeed 4 is defensible. For slower goals where time-on-feet exceeds two hours, a higher-cushion shoe is more appropriate.
Marathon
Marginal. The 186 g weight helps with economy, but the 27 mm heel stack is at the lower end of marathon-defensible cushion. For runners under 65 kg with a midfoot-to-forefoot strike pattern, the shoe can work. For heavier runners or heel-strikers, a more cushioned trainer is the safer call. Compare against full-cushion options through the shoe comparison tool.
Price and value verdict
At ₹9,999, the Hyperspeed 4 is the budget-conscious choice in the lightweight daily category. It is meaningfully cheaper than every direct competitor in India. The lower-tier foam compound is offset by the lower weight and the greater durability per kilometre. For a runner targeting 5K to 21.1 km goals, the value calculation favours the Hyperspeed 4 strongly.
For runners targeting marathon-plus distances, the savings are less compelling because the shoe is not the right tool for the goal race. In that case, redirect spend toward a more cushioned daily trainer. The super-shoe comparison covers the race-day end of the spectrum, and the STRIDD plan generator outputs goal-specific training structures that match shoe selection to weekly intensity.