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ALPINESTARS

ALPINESTARS Flex-AST 8 Denim Pants

ALPINESTARS Flex-AST 8 Denim Pants

SKU:4242-0002-28

Regular price $299.95
Regular price Sale price $299.95
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Alpinestars · Pants · Street

Single-Layer Technical Denim With Level 2 Armor

The Alpinestars Flex-AST 8 Denim Pants are street riding pants designed to deliver a classic denim look with purpose-built motorcycle construction. Built from A-TRAACX monolayer denim that blends Cordura, cotton, and Nylon 6.6, they keep a lightweight, single-layer feel while targeting the demands of riding.

For comfort on longer days in the saddle, integrated COOLMAX moisture-wicking technology helps manage moisture. Protection is handled with included Nucleon Morph STEALTH Level 2 knee and hip protectors, and the pants are finished in a moto classic fit with a regular straight-leg cut for an everyday-wear profile.

  • CategoryPants
  • Riding TypeStreet

Construction

AA-Certified Riding Denim

The Flex-AST 8 Denim Pants are a CE Category II EN 17092-4:2020 AA certified riding garment. Their A-TRAACX monolayer denim construction combines Cordura, cotton, and Nylon 6.6, paired with hidden dual seam and overlock stitching aimed at long-term durability while keeping the look and feel of classic denim.

Included

Included Level 2 Protectors

For impact protection, these pants include Alpinestars Nucleon Morph STEALTH Level 2 knee and hip protectors. The protectors are described as ultra-slim and designed to adapt to the rider’s body for comfort during everyday street use while maintaining a clean, low-profile fit under the denim.

Comfort

Straight Fit, Classic Details

A moto classic fit with a regular straight-leg cut keeps the Flex-AST 8 Denim Pants easy to wear on and off the bike. A five-pocket layout and a metal zipper fly closure deliver familiar jeans functionality, while integrated COOLMAX technology works to pull moisture away from the skin during rides and changing conditions.

Construction

A-TRAACX Monolayer Denim

Alpinestars builds the Flex-AST 8 Denim Pants around A-TRAACX monolayer denim, combining Cordura, cotton, and Nylon 6.6 in a single-layer design. The goal is a technical riding jean that maintains everyday denim styling while supporting the garment’s CE Category II EN 17092-4:2020 AA certification. Hidden dual seam construction and overlock stitching add durability-focused finishing details without changing the classic jeans appearance.

Ventilation

COOLMAX Moisture Management

Integrated COOLMAX technology is built into the pants to move moisture away from the skin for comfort during longer street rides. This moisture-wicking approach is intended to help the rider feel cooler and drier as conditions change, while still keeping the denim styling and straight-fit profile that works for day-to-day wear.

Included, Optional & Compatible Equipment

Included Nucleon Morph STEALTH Level 2 knee and hip protectors included.
Included For protection, they feature ultra-slim Alpinestars Nucleon Morph STEALTH Level 2 knee and hip protectors that adapt to your body for enhanced impact coverage and all-day comfort, making them an ideal choice for riders looking for premium technical denim with a casual look.
Optional — sold separately Adjustable knee protector pockets with three height positions.

As stated by Alpinestars for this pants. Optional and compatible equipment is sold separately unless it is listed as included.

Features & Specifications

A-TRAACX monolayer denim construction with Cordura, cotton, and Nylon 6.6.
Integrated COOLMAX moisture-wicking technology for breathable comfort.
CE Category II EN 17092-4:2020 AA certified riding garment.
Nucleon Morph STEALTH Level 2 knee and hip protectors included.
Adjustable knee protector pockets with three height positions.
Hidden dual seam and overlock stitching for added durability.
Five-pocket design with metal zipper fly closure.
Moto classic fit with regular straight leg cut.

As listed by Alpinestars for this pants.

Available Colors & Sizes

Color Sizes Part Numbers
Medium Blue 28, 30, 32, 34, 36, 38, 40 4242-0002-28, 4242-0002-30, 4242-0002-32, 4242-0002-34, 4242-0002-36, 4242-0002-38, 4242-0002-40
Used Black 28, 30, 32, 34, 36, 38, 40 4242-0005-28, 4242-0005-30, 4242-0005-32, 4242-0005-34, 4242-0005-36, 4242-0005-38, 4242-0005-40

Manuals & Resources

Alpinestars Pants Size Chart

Provided by Alpinestars. Opens in a new tab.

⚠️ WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. Learn more.