Alpinestars Youth Fluid Portl Jersey

Youth MX jersey in the Portl graphic

The Youth Fluid Portl Jersey is Alpinestars' entry-range motocross jersey for kids, in the 2026 Portl colourways, made for recreational riding with a relaxed fit and a full performance look. It's a lightweight, moisture-wicking polyfabric that breathes, with mechanical stretch in the fabric for durability, an ergonomic cut with a new pattern for freedom of movement, and an extended rear for coverage in the riding position. Sport collar at the neck.

Sizing and fit

Youth sizes YL and YXL in two colourways: Blue/White and Green/White/Black. Youth Fluid is sized for riders aged 5 to 15, and the fit is athletic but relaxed, so most kids take their normal size with room for a chest guard underneath.

Match it up

Pair it with the Youth Fluid Drag Pants or Youth Fluid Apex v2 Pants. Add Youth Radar Gloves and a Bionic Action Kids Chest Guard.

Expertly designed for young off-road riders, the 2026 Youth Fluid Portl Jersey leverages Alpinestars' premier motocross technology to deliver a total performance look and relaxed fit. The lightweight, moisture-wicking polyfabric construction features an ergonomic cut and an extended rear for superior mobility and coverage on tough terrain. Optimized for riders aged 5 to 15, this jersey ensures breathable comfort and durability for all-day riding.

• Ergonomic athletic fit: new pattern and cut designed for enhanced freedom of movement and superior mobility on the bike.
• Total performance look: available in distinctive, aggressive color combinations designed to match the Youth Fluid Portl Pants.
• Advanced polyfabric construction is lightweight, moisture-wicking, and breathable, with mechanical stretch for durability.
• MX26 Youth Fluid jerseys feature ergonomic construction tailored to each graphic.
• Cut longer in the rear for greater coverage when riding.
• Sport collar neck construction.