The ASICS Fuji Speed 4 Unisex delivers ultra-lightweight performance and reliable grip for fast trail runs – even on challenging terrain.
The lightweight construction and trail-performance-focused design make the ASICS Fuji Speed 4 Unisex the perfect choice for runners seeking speed, stability, and durability across any terrain.
The durable Nexkin mesh upper reduces weight while providing reliable protection against abrasion from rocks, roots, and branches. The asymmetrical lacing system evenly distributes pressure across the top of the foot, while the integrated lace garage keeps laces neatly and securely tucked away.
In the midsole, the innovative FF BLAST™ PLUS technology delivers a balanced combination of responsive cushioning and noticeable energy return. This is complemented by a full-length carbon plate that propels each step forward efficiently, creating a dynamic running sensation—ideal for quick pace changes and long distances.
The specially engineered ASICSGRIP™ outsole ensures outstanding traction on both dry and wet trails, even during steep ascents or technical descents, without compromising a natural running feel.
What You'll Love:
- FF BLAST™ PLUS midsole for energetic cushioning and rebound
- Durable Nexkin mesh with protective overlays
- Pebax plate for efficient power transfer and speed
- Asymmetrical lacing system with practical lace garage
- ASICSGRIP™ outsole for reliable grip in all conditions
Model Number: 1013A179-300
Best useBest Use Learn More
CushioningCushioning learn more
StabilityStability Learn More
Specs & Fit
(Men's Size 9)
| Weight | 8.5 oz 240 grams |
| Heel Stack | 24 mm |
| Forefoot Stack | 19 mm |
| Heel-Toe Offset: | 5 mm |
How It Fits (based on D width)
| Sizing: | True to size |
| Heel Width: | Medium |
| Midfoot Volume: | Medium |
| Toe Box Fit: | Medium |
| Arch Height: | Medium |
Technologies
MIDSOLE
- Full-length pebax plate: redirects your energy forward for maximum speed.
- FF BLAST™ PLUS: super responsive foam for cushioning and energy return.
OUTSOLE
- Multidirectional Lugs: strategically placed for enhanced traction on various surfaces.
UPPER
- Breathable Mesh: promotes ventilation while preventing debris from entering.
- Gusseted tongue wing fit system: improves the midfoot fit and reduces tongue sliding while keeping debris out of the shoe.
- Asymmetrical lacing system: reduces pressure across the top of the foot.