Alpinestars Youth Fluid Apex Jersey

Entry-range youth MX jersey with a relaxed fit

The Youth Fluid Apex Jersey is Alpinestars' entry-range motocross jersey for kids, new for 2026 and made for recreational riding rather than racing. Fluid is the relaxed end of the Alpinestars MX line-up, and the jersey keeps it simple: a lightweight, moisture-wicking polyfabric that breathes, with mechanical stretch in the fabric and a new ergonomic pattern cut to suit the graphic. It's cut longer in the rear so it stays tucked, with a sport collar at the neck.

Sizing and fit

Youth sizes YS to Y2XL in two colourways: Black/Silver and Red/White. It's an athletic sport fit rather than a race cut, so most kids take their normal size and still have room for a chest guard underneath.

Match it up

Made to match the Youth Fluid Apex v2 Pants. Add Youth Radar Gloves and a Bionic Action Kids Chest Guard. Adult version: the Fluid Apex Jersey.

Expertly designed for young off-road riders, the 2026 Youth Fluid Apex Jersey provides a total performance look and feel optimized for recreational motocross. The jersey offers lightweight, moisture-wicking polyfabric construction with mechanical stretch and an ergonomic sport-fit for superior mobility on tough terrain.

• Ergonomic athletic fit with new pattern design for enhanced freedom of movement.
• Distinctive, aggressive color combinations matching the Youth Fluid Pants.
• Advanced polyfabric: lightweight, moisture-wicking, breathable with mechanical stretch.
• New ergonomic construction tailored to complement the graphics.
• Cut longer in the rear for greater coverage when riding.
• Sport collar neck construction for premium comfort.