Alpinestars Youth Supertech Dyna Pants

Pro-level youth MX pants in the Dyna graphic

The Youth Supertech Dyna Pants are the youth version of Alpinestars' top motocross pants, in the Dyna colourways. Supertech sits above Techstar and Racer, and these are built for kids who race: a full four-way stretch chassis in a lightweight single layer, 600D polyfabric panels and a reinforced 600D seat where pants wear through first, suede microfibre Laredo panels on the inner knees, and breathable Stretchnet inserts across the whole lower leg with perforations for ventilation.

Sizing and fit

Youth sizes 24 to 30 (waist, inches) in two colourways: Purple/Pink and Red/White/Navy. The 30 is new, so bigger kids get another season in youth gear before adult sizes. It's an athletic race fit that sits close through the thigh and knee; go up a size if your rider is between two. Ratchet waist closure over an elasticated waist, covered zip fly, and the single-layer build leaves room for knee guards underneath.

Complete the set

Made to match the Youth Supertech Dyna Jersey in the same colourways. Add Youth Full Bore v2 Gloves and SX-1 Youth Knee Guards underneath. Adult version: the Supertech Dyna Pants.

The Youth Supertech Dyna Pants are premium motocross race pants engineered for young riders who demand pro-level mobility, comfort, and control on the dirt. Constructed with advanced stretch rip-stop and durable reinforcement zones, they deliver lightweight ventilation and race-ready freedom of movement through every lap. An updated athletic fit helps keep the pants secure and comfortable for competitive riding, with added durability in key wear areas.

• Advanced materials: single-layer stretch rip-stop fabric paired with high-durability 600D multi-panel polyfabric gives young riders lightweight strength and race-ready abrasion durability.
• Athletic fit: revised performance pattern supports freer movement on the bike, helping maintain flexibility, stability, and comfort through demanding motos.
• Durable full 4-way stretch main chassis construction with a lightweight single-layer build for reduced bulk.
• Reinforced 600D seat panel in a high-wear zone for added structural durability.
• Suede microfiber Laredo inner knee panels for abrasion resistance.
• Highly breathable Stretchnet inserts across the full lower leg for reduced material weight and increased stretch.
• Inner mesh lining at the rear and back thighs to support panel stability and long-term wear.
• Strategically placed perforations throughout the chassis for additional ventilation.
• Ratchet waist closure and elasticated waist construction.
• Covered zippered fly construction.
• Expanded size range includes size 30.