Alpinestars GP Plus V4 Leather Suit - 1 Piece

Alpinestars GP Plus V4 Leather 1-Piece Suit

Performance, Protection, and Value in Perfect Balance

The GP Plus V4 Leather Suit is designed for riders who demand real track capability without stepping into ultra-premium race pricing. Built with technology derived from Alpinestars’ MotoGP development program, it delivers a refined blend of protection, comfort, and performance—ideal for both aggressive street riding and frequent track days.

Premium Leather Construction

Constructed from high-quality bovine leather, the GP Plus V4 offers excellent abrasion resistance and durability while maintaining a supple, comfortable feel. Reinforced impact zones and multi-panel construction enhance strength in critical areas without adding unnecessary weight.

Strategically placed perforations improve airflow, helping regulate body temperature during demanding rides and warmer conditions.

Engineered for Rider Mobility

The GP Plus V4 is built around a performance riding posture, featuring pre-curved arms and legs for a natural fit in aggressive positions. Stretch panels in key areas—such as the crotch, arms, and back—allow for improved flexibility and unrestricted movement on the bike.

An aerodynamic back hump enhances airflow and stability at speed, while also contributing to rider comfort over longer sessions.

Track-Ready Protection

• CE-certified armor in shoulders, elbows, and knees
• External DFS (Dynamic Friction Shield) sliders for impact and slide control
• Reinforced multi-layer construction in high-impact zones
• Durable, race-grade stitching throughout key seams

Designed to manage both impact and abrasion, the GP Plus V4 provides confidence whether you're carving canyon roads or pushing limits on track.

Tech-Air® Compatibility

Fully Tech-Air® Ready, the suit is designed to integrate seamlessly with Alpinestars’ airbag systems—allowing riders to upgrade their safety without compromising fit or comfort.

Key Features

• Premium bovine leather chassis for durability and abrasion resistance
• Perforated panels for improved airflow and cooling
• Stretch zones for enhanced flexibility and rider comfort
• DFS external sliders for impact and abrasion management
• Pre-curved race fit for aggressive riding positions
• Aerodynamic back hump for high-speed stability
• Tech-Air® airbag system compatible

Additional Details

• The Tech-Air® Ready GP Plus v4 leather suit is a complete revolution of the existing v3 model featuring an all-new construction including a blend of Flex Plus racing bovine leather, Alpinestars Composite Stretch Plus material, Matryx®, HRSF, and GP DFS sliders perfect for the sport and track rider looking for an upper mid-level suit with the latest material innovations
• The GP Plus v4 features new Flex Plus race leather, specially tanned and refined in Italy, ultraflexible Flex Plus race bovine leather that is highly adaptive to the body, supporting a 6% adaptability ratio which is 80% more than that offered by regular bovine leather, the result means that the GP Plus v4 Leather Suit provides unrivalled comfort, feel, freedom of movement and precise fitment
• The Flex Plus race leather meets Alpinestars’ Professional racing standard in terms of abrasion and tear resistance, while being 10% lighter than standard bovine leather
• With A-CS® Plus, the stretchability ratio provides 20% additional elongation, and tear resistance is increased by 300% versus leather
• The GP Plus v4 also incorporates Alpinestars Composite Stretch Plus, A-CS® Plus, material on the suit’s side torso and shoulder blades, offering lower weight, and increased flexibility and freedom of movement
• Perforation of the Flex Plus race leather is provided all over the upper chest, abdomen, and thighs
• The GP Plus v4 also incorporates strategically placed lightweight and breathable Matryx ® material panels on the suit’s torso for optimal ventilation, especially when the suit is worn with Tech-Air ® Airbag Systems like the Tech-Air ® 10 or 5
• Another benefit of using A-CS® Plus is that it offers high breathability with a lower weight and lower profile than leather accordion paneling
• As for other construction features, the GP Plus v4 has HRSF stretch inserts in the crotch, back of legs, inner arms, and pectoral areas
• The suit also incorporates GP DFS shoulder, elbow, and knee sliders for protection
• Sporting soft stretch wrist and ankle cuffs the suit also has and a detach - able comfort liner with biostatic Polygiene® treatment to keep it feeling and smelling fresh
• Providing the GP Plus v4’s impact protection, race-proven GP-R elbow, forearm, knee, and shin armor, and Nucleon Race shoulder armor are incorporated in the suit
• For the ultimate in rider protection, the GP Plus v4 is also fully Tech-Air® Ready for use with the Tech-Air® 5 or Tech-Air® 10 Airbag Systems and provides a convenient pocket on the forearm for the Tech-Air® 10’s remote LED panel

Who It’s For

The GP Plus V4 is perfect for riders upgrading from entry-level gear or those who want a dependable, high-performance suit without the cost of pro-level equipment. It’s equally at home on spirited road rides and regular track days.

The Bottom Line

The Alpinestars GP Plus V4 Leather Suit delivers where it matters most—proven protection, comfort, and performance at a price point that makes sense. It’s a go-to option for riders who want serious capability without overcommitting to a full race-spec suit.