The Alpinestars GP Plus v4 Tech-Air Ready Leather Suit is a high-performance one-piece racing suit designed for sport riders and track-day enthusiasts who want advanced materials, precise fitment, and integrated airbag-system compatibility. Finished in Black, Red Fluo, and White, this suit is offered in US 38 / EU 48 and combines Flex Plus racing bovine leather, Alpinestars Composite Stretch Plus material, Matryx®, HRSF stretch inserts, and GP Dynamic Friction Shield sliders. The Flex Plus leather is specially refined in Italy, provides a highly adaptive fit, and meets Alpinestars’ professional racing standards for abrasion and tear resistance while weighing less than conventional bovine leather.
The GP Plus v4 uses A-CS® Plus stretch panels on the side torso and shoulder blades to improve flexibility, breathability, and freedom of movement. Perforated leather across the upper chest, abdomen, and thighs supports airflow, while lightweight Matryx® torso panels provide additional ventilation, particularly when the suit is worn with a Tech-Air® 5 or Tech-Air® 10 Airbag System. HRSF stretch inserts in the crotch, back of the legs, inner arms, and pectoral areas help maintain a comfortable riding position without compromising the suit’s race-focused construction.
Protection comes from integrated GP-R elbow, forearm, knee, and shin armor along with Nucleon Race shoulder armor. GP DFS sliders are positioned at the shoulders, elbows, and knees to support controlled contact during a slide. Soft stretch wrist and ankle cuffs improve comfort, and the detachable comfort liner features Polygiene® treatment to help maintain freshness during repeated use. The suit is fully Tech-Air® Ready and includes a forearm pocket for the Tech-Air® 10 remote LED panel. Brand: Alpinestars. Manufacturer part number: 3150523132148. Vendor part number: 3150523132148.
Features:
- Tech-Air® Ready: Compatible with Alpinestars Tech-Air® 5 and Tech-Air® 10 Airbag Systems.
- Flex Plus Racing Leather: Italian-refined bovine leather provides adaptive comfort, race-grade abrasion resistance, and tear resistance.
- A-CS® Plus Stretch Panels: Lightweight stretch material improves flexibility, breathability, and freedom of movement.
- Matryx® Ventilation Panels: Strategically placed torso panels support airflow while reducing bulk.
- Race Protection: Includes GP-R elbow, forearm, knee, and shin armor with Nucleon Race shoulder armor.
- GP DFS Sliders: Shoulder, elbow, and knee sliders help manage contact during a slide.
- Comfort Liner: Detachable liner with Polygiene® treatment helps control odor and maintain freshness.
- Fitment: One-piece racing suit in Black/Red Fluo/White, US 38 / EU 48.
- Part Numbers: Alpinestars manufacturer and vendor part number 3150523132148.