Alpinestars Fluid Drag Pants

Relaxed-fit MX pants for training and trail

The Fluid Drag Pants are Alpinestars' entry-range motocross pants in the Drag graphic, for riders who want a relaxed sport fit for training, track days and off-road riding rather than a race-tight cut. The chassis is lightweight 600D polyfabric with reinforced 600D at the seat and knees, extra reinforcement at the back yoke, upper knees and backs of the legs, extended stretch corduroy panels so the pants follow you on the bike, and synthetic leather on the inner knees where they rub. A mesh lining keeps them comfortable for a full day.

Sizing and fit

Waist sizes 28 to 40 in four colourways: Black/White/Light Blue/Red, Blue/Black, Blue/Gold and Red/White. It's the relaxed fit of the Alpinestars MX line, so knee guards fit underneath at your normal size, and the articulated shape stops them pulling when you stand up.

Match it up

Pairs with the Fluid Drag Jersey in the same colourways. Add Radar Gloves and SX-1 v2 Knee Guards. Kids' version: the Youth Fluid Drag Pants.

The Fluid Drag Pants are performance-driven MX pants designed for motocross riders who want comfort, mobility, and a relaxed sport fit across training, track days, and off-road riding. Constructed with a lightweight 600D polyfabric chassis, extended stretch corduroy panels, and reinforced seat and knee zones, they deliver durable freedom of movement and secure bike feel without compromising all-day comfort.

• Sport fit: delivers a relaxed MX silhouette that keeps riders comfortable and composed through training runs, track days, and off-road sessions.
• Riding mobility: an articulated shape supports natural movement on the bike so the pants follow body position without feeling restrictive.
• All-day comfort: mesh lining and a secure closure system help the pants stay easy to wear and stable through repeated moto use.
• Reinforcements are positioned on key areas including the back yoke, upper knees, and backs of the legs for added coverage in high-wear zones.
• Reinforced 600D polyfabric is applied at the seat and knees to strengthen protection in exposed areas.
• Synthetic leather on the inner knees provides additional durability in a critical contact zone.