Two unplated speed trainers so evenly matched the choice comes down to feel. The numbers: 89 vs 88 CoreScore, 222g vs 212g, 72% vs 71% energy return, identical 24 HC midsoles, and $10 apart ($118–$130 vs $128–$140). The Mach 6 pairs its foam with Hoka's rockered 5mm-drop geometry and takes the better value score (85 — one of the best in the catalogue). The Rebel v4 is the lighter, more flexible shoe with a 6mm drop and a wider, more forgiving upper fit through the midfoot.
Hoka Mach 6 | New Balance FuelCell Rebel v4 | |
|---|---|---|
| Price | $118▲ Best | $128 |
| Weight | 222g | 212g▲ Best |
| Heel drop | 5mm | 6mm |
| Heel stack | 34mm | 32mm |
| Midsole feel | 24 HC | 24 HC |
| CoreScore | 89▲ Best | 88 |
| Arch support | neutral | neutral |
| Best for | Speed sessions, Tempo runs, Racing | Tempo training, 5K / 10K racing, Speed workouts |
| Not ideal for | Full marathon racing, Max cushion preference | Max cushion seekers, Long slow distance |
Who should buy which
Choose the Mach 6 if you like a rockered ride that rolls you forward — and as the marginally cheaper, marginally higher-scoring option it's the default pick.
Choose the Rebel v4 if you prefer a flexible, close-to-foot feel over a rocker — it's the shoe that disappears on your foot at speed, and the 10g saving is real if you race in your trainers.
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