The Alpinestars GP Plus v4 Sprint 1-Piece Leather Suit is engineered for serious track riding, combining race-grade protection, performance, airflow, and comfort in a highly pre-curved race fit. Finished in Red Fluo, Mid Red, and White, this US 38 / EU 48 suit is designed for riders who demand advanced protection and unrestricted movement during aggressive racing positions. The manufacturer is Alpinestars, and the manufacturer and vendor part number is 3150225-3087-48.
The suit uses Flex Plus racing-grade bovine leather with dual layers in exposed areas for strong abrasion resistance and a supple, adaptive feel. Composite Stretch A-CS technology on the back panel improves breathability, comfort, and freedom of movement while maintaining a lighter, lower-profile construction than a traditional leather accordion panel. The A-CS Tech material provides 30% elongation, increased tear resistance compared with HRSF, and enhanced cut resistance compared with leather. Fully perforated leather panels promote airflow and help improve ventilation during demanding track sessions.
Protection is provided by race-spec GP-R armor at the elbows, knees, and shins for extended coverage in key impact zones, along with Nucleon Race shoulder armor for impact and abrasion protection. GP DFS sliders help manage friction, while removable elbow sliders allow setup flexibility. MATRYX material on the shin is engineered for a high resistance-to-weight ratio, air permeability, and flexibility, with performance-focused zoning. Aramid reinforcements strengthen the elbow flexion areas, and the race-specific Supertech R10 aero hump is designed to work with the Alpinestars Supertech R10 helmet for improved streamlining in a tucked racing crouch.
The GP Plus v4 Sprint suit is Tech-Air 7x compatible and accommodates the optional Tech-Air 7x sleeve display as well as the Tech-Air 10 wireless display. Its construction and protective components are intended for closed-course motorcycle racing and performance track use, providing a secure, aerodynamic fit for riders who prioritize advanced protection, mobility, and ventilation. Verify the Alpinestars sizing chart before ordering to confirm the US 38 / EU 48 fit.
Features:
- Race-Grade Construction: Flex Plus racing-grade bovine leather with dual layers in exposed areas delivers strong abrasion resistance and flexible comfort.
- Tech-Air Compatibility: Designed for integration with the Alpinestars Tech-Air 7x Airbag System and compatible displays, including the Tech-Air 7x sleeve display and Tech-Air 10 wireless display.
- A-CS Stretch Technology: Composite Stretch A-CS material improves breathability, mobility, tear resistance, and cut resistance while reducing bulk compared with traditional leather accordion panels.
- Ventilated Design: Fully perforated leather panels enhance airflow and breathability for demanding track riding.
- Race Protection: GP-R elbow, knee, and shin armor, Nucleon Race shoulder armor, GP DFS sliders, and aramid elbow reinforcements provide protection in key impact and abrasion zones.
- MATRYX Shin Panels: Engineered for a strong resistance-to-weight ratio, airflow, flexibility, and targeted performance.
- Race Fit: Highly pre-curved body, arms, and knees support an aggressive riding position and improved control.
- Aerodynamic Integration: Supertech R10 aero hump is designed to work with the Alpinestars Supertech R10 helmet for optimized streamlining.
- Size and Part Number: US 38 / EU 48; Alpinestars manufacturer and vendor part number 3150225-3087-48.