Custom Men's Ultra Tri P1x
P1x. Relentless Pursuit of Speed.
Refined over years of testing, every seam, panel, and fabric is engineered for measurable gains. The result is a precise race fit with 3D AeroWeave construction and a seamless finish to reduce drag where it matters most.
Two pro victories. Two course records. One suit. Sam Long: fastest bike split on record — 1:49:32 (30.7 mph avg) Marjolaine Pierré: overall win + bike course record, Aix-en-Provence — 4:08:27
Two pro victories. Two course records. One suit.
Sam Long: fastest bike split on record — 1:49:32 (30.7 mph avg)
Marjolaine Pierré: overall win + bike course record, Aix-en-Provence — 4:08:27
Built for speed. Proven by records.
FEATURES
- Ultra-Light 3D AeroWeave Fabric: Wind tunnel-tested, second-skin fabric engineered for the sleeves and upper back to deliver uncompromising aerodynamic performance at minimal weight. The advanced 3D AeroWeave raised-ridge construction actively disrupts airflow, reducing drag and maximizing speed for proven race-day gains.
- Precision-Cut Arm Cuffs: Finished sleeves create a seamless, aerodynamic edge for reduced drag and a race-tuned fit.
- Seamless Leg Construction: Innovative leg design with internal silicone grippers eliminates bulky bands for a sleek, fast, and comfortable finish.
- High-Speed Light Ventilation Zones: Horizontally patterned, high-speed light fabric across the sides and back optimizes airflow for real-world racing conditions.
- Pro Carbon Chamois: Upgraded, perforated chamois delivers fast-drying comfort and targeted support for long-course performance.
- Minimalist Chamois Stitching: Refined zig-zag stitching minimizes bulk and maximizes flexibility, delivering an ultra-smooth, next-to-nothing feel.
- Reusable Sustainable Storage Bag: Packaged in a water-resistant pouch designed to keep your essentials safe from spills and splashes at the beach, pool, or on the go.
- 10" (25.4cm) inseam
FIT
Zoot products are designed to be RACE FIT to maximize performance and aerodynamic benefits. For a less compressive feel, we recommend you size up. If you are between sizes, we recommend you size up.
Model is wearing size MEDIUM.
FABRIC
- Body Front: Aeromax 85% Polyester / 15% Elastane, 115gm²
- Body Back: High-Speed Light 80% Polyester / 20% Elastane, 150gm²
- Sleeves: 3D AeroWeave 65% Polyester / 35% Elastane, 150gm²
- Bottom: Thunderbike Power 80% Nylon / 20% Elastane, 210gm²
DESIGNED BY YOU. BUILT BY ZOOT
Fully custom. Race ready. Visit our design gallery and get inspired.









