The Alpinestars GP Plus v4 Tech-Air Ready Leather Suit is a high-performance one-piece motorcycle racing suit designed for sport riders and track-day use. This upper mid-level suit combines Flex Plus race-grade bovine leather with Alpinestars Composite Stretch Plus, Matryx, HRSF stretch inserts, and GP Dynamic Friction Shield sliders for advanced comfort, mobility, ventilation, and protection. The suit is offered in Black, Red Fluo, and Dark Blue in US 42 / EU 52 sizing, providing a precise race-oriented fit for riders who demand responsive control on the street or circuit.
The Flex Plus race leather is specially tanned and refined in Italy to provide enhanced adaptability, comfort, and freedom of movement while maintaining professional racing standards for abrasion and tear resistance. A-CS Plus stretch panels are positioned across the side torso and shoulder blades to reduce bulk while improving flexibility, breathability, and movement. Perforated leather across the upper chest, abdomen, and thighs promotes airflow, while lightweight Matryx panels on the torso help increase ventilation when the suit is worn with a compatible Tech-Air airbag system.
Protection is provided by GP-R armor at the elbows, forearms, knees, and shins, along with Nucleon Race shoulder armor and GP DFS sliders at the shoulders, elbows, and knees. HRSF stretch inserts in the crotch, back of the legs, inner arms, and pectoral areas support an aggressive riding position. Soft stretch wrist and ankle cuffs improve comfort, while the removable liner features biostatic Polygiene treatment to help maintain freshness during extended riding sessions.
The GP Plus v4 is fully Tech-Air Ready for use with the Alpinestars Tech-Air 5 or Tech-Air 10 Airbag Systems. A dedicated forearm pocket accommodates the Tech-Air 10 remote LED panel for convenient system monitoring. This product is manufactured by Alpinestars and carries manufacturer part number 3150523135752 and vendor part number 3150523135752. Fitment is intended for compatible motorcycle racing and track-riding applications where a one-piece leather suit and Tech-Air integration are required.
Features:
- Tech-Air Ready construction is compatible with Alpinestars Tech-Air 5 and Tech-Air 10 Airbag Systems.
- Flex Plus race bovine leather provides a highly adaptive fit with professional racing abrasion and tear resistance.
- A-CS Plus stretch material improves flexibility, breathability, freedom of movement, and rider comfort.
- Matryx torso panels and perforated leather support airflow for sport and track riding.
- GP DFS shoulder, elbow, and knee sliders provide race-focused external protection.
- GP-R elbow, forearm, knee, and shin armor combines with Nucleon Race shoulder armor for impact protection.
- HRSF stretch inserts support mobility in the crotch, back of legs, inner arms, and pectoral areas.
- Removable comfort liner includes biostatic Polygiene treatment for improved freshness.
- Size: US 42 / EU 52.
- Color: Black, Red Fluo, and Dark Blue.
- Manufacturer: Alpinestars.
- Manufacturer part number: 3150523135752.
- Vendor part number: 3150523135752.