The Tech-Air® Ready GP Plus v4 Leather Suit is a complete revolution of the existing v3 model with a completely new construction that includes a blend of Flex Plus racing cowhide, Alpinestars Composite Stretch Plus material, Matryx®, HRSF and GP DFS sliders.

The GP Plus v4 is the perfect choice for sport and track riders looking for a mid-to-high level suit with the latest material innovations. The GP Plus v4 features the new Flex Plus racing leather, specially tanned and finished in Italy, an ultra-flexible Flex Plus racing cowhide that is highly adaptable to the body, supporting a 6% fit ratio that is 80% higher than that offered by regular cowhide.
The Flex Plus leather with its high fit ratio ensures that the GP Plus v4 Leather Suit offers unrivalled comfort, feel, freedom of movement and a precise fit.
Additionally, the Flex Plus racing leather meets Alpinestars professional racing standards for abrasion and tear resistance, while being 10% lighter than standard cowhide.
The GP Plus v4 also incorporates Alpinestars Composite Stretch Plus, A-CS® Plus, material on the lateral torso and shoulder blades of the suit, offering lower weight and greater flexibility and freedom of movement. With A-CS® Plus, the stretch ratio provides an additional 20% stretch and tear resistance is increased by 300% compared to leather.
Another benefit of using A-CS® Plus is that it offers high breathability with a lower weight and lower profile than accordion leather panels.
The GP Plus v4 also incorporates lightweight and breathable Matryx® material panels strategically placed on the torso of the suit for optimum ventilation, especially when the suit is worn with Tech-Air Airbag systems such as the Tech-Air 10 or Tech-Air® 5.
In terms of other construction features, the GP Plus v4 has HRSF stretch inserts in the crotch, back of the legs, inner arms and chest areas.
Flex Plus racing leather perforation is provided across the entire upper chest, abdomen and thighs. The suit also incorporates GP DFS shoulder, elbow and knee sliders for Bioflex hip protection and armor.
Sporting soft, stretch cuffs and ankles, the suit also has a removable comfort liner with biostatic polygiene® treatment to keep it fresh and smelling great.
Providing the impact protection of the GP Plus v4, the suit has GP-R armor at the elbows, forearm, knee and shins, as well as Nucleon Race shoulder armor incorporated into the suit, resulting in a CE AAA rating. For maximum 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 forearm pocket for the Tech-Air® 10 remote LED panel.
According to European law the CE marking is a conformity requirement for the marketing of this product. The following standards apply: Fully CE certified riding garment to CE standards – Category II EN 17092-2:2020 – Class AAA.
CE Category II Level 1 EN 1621-1:2012 Alpinestars Nucleon Race shoulder armor.
CE Category II Level 1 EN 1621-1:2012 GP-R elbow, forearm, knee and shin armor.
CE Category II Level 1 EN 1621-1:2012 Bioflex hip armor.