What is A-CS® Plus and why does it matter for a leather jacket?

A-CS® Plus (Alpinestars Composite Stretch technology, Plus generation) is a technical fabric used in place of leather accordion panels on the torso. It provides 30% elongation for unrestricted movement in the riding position, while delivering 300% greater tear resistance and 600% greater cut resistance than HRSF (the previous-generation stretch material). The panels are also 10% lighter than leather, contributing to the Atem V5's lower overall weight and reduced fatigue on long rides.

What protection level does the Atem V5 include, and what is optional?

The Atem V5 includes Nucleon Flex Plus CE Level 1 shoulder armor and GP elbow armor (CE Level 1). No back or chest protector is included as standard. The jacket features dedicated pockets compatible with Alpinestars Nucleon back protectors and split chest protectors (sold separately). For riders wanting Level 2 armor as standard in a jacket, see the Missile V3 Ignition.

Is the Atem V5 compatible with the Alpinestars Tech-Air airbag system?

Yes. The Atem V5 is compatible with the Tech-Air® 5 and Tech-Air® 3 systems, with the vest zipping into the jacket and connecting via the Tech-Air port. It is also Tech-Air® Ready, meaning it can accommodate other Tech-Air® systems. However, systems like the Tech-Air® 7x are designed for race-specific garments, so the fit and performance may not be fully optimized on this jacket. For best results, Tech-Air® 5 and Tech-Air® 3 remain the recommended systems for the Atem V5.

How does the Atem V5 compare to the GP Force V2 and Missile V3 Ignition?

The GP Force V2 uses standard bovine leather with CE Level 1 armor — the all-round versatile choice for sport and naked bike riders on a budget. The Atem V5 steps up with Flex Plus Race leather, A-CS® Plus stretch technology, RIDEKNIT® inner arms, and DFS RR protectors — a significant material and fit upgrade for dedicated sport riders. The Missile V3 Ignition is the top specification: Level 2 Nucleon PLASMA Pro armor, Tech-Air 7x compatibility, and MotoGP-derived construction. Each sits at a distinct price and performance tier.

Atem V5 Leather Jacket

4.6 | 9 reviews

Atem V5 Leather Jacket

racing/sport | jackets

$799.95

Color:BLACK

The Atem V5 Leather Jacket is a racing jacket engineered and optimized for sportsbike and naked sportsbike riders, and features extensive race-derived features, technology and materials including a dedicated ‘Race’ fit with pre-curved arms maximum riding performance, Alpinestars Flex Plus ‘Race’ leather throughout, race-proven protection on the shoulders and elbows, while delivering optimum levels of rider comfort.

Flex Plus bovine ‘Race’ leather construction is 10% lighter than regular bovine leather, while delivering 80% more adaptability for superior freedom of movement, an ultra-adaptive race fit, and enhanced abrasion and tear resistance.
3D pattern body mapping for an enhanced ‘race’ fit.
Dual density DFS RR shoulder and elbow protectors for superior friction control.
Tech-Air® 5 and Tech-Air® 3 Ready.
Hook and loop neck closure with the large built-in flap for a secure closure.
Ergonomic hook and loop cuffs with a zippered sleeve on the forearm for ease of use.
Streamlined speed hump for enhanced aerodynamic performance and enhanced ventilation.
Low profile sports collar construction for superior rider comfort and enhanced aerodynamic performance.
Waterproof inner compartment for the safe and secure storage of valuables.
Two zippered external side pockets for practical and secure storage.
Mesh interior comfort liner with pockets to accommodate a back protector or a split chest protector.
Cut longer on the back for greater coverage in the riding position.
3/4 waist zip for a secure connection with Alpinestars pants.

GP elbow armor for additional impact protection in a key area.
Nucleon Flex Plus shoulder armor for superior impact protection.
According to European statutory law the CE mark is a conformity requirement for the marketing of this product. The following standards apply: Fully CE-certified riding garment to CE – Category II EN17092-3: 2020 standard – AA Class.

Low profile sports collar construction for superior rider comfort and enhanced aerodynamic performance.
Extensive technical stretch panels under the arms, on the inner arms, and around the neck for an optimized fit.
Alpinestars composite stretch technology, A-CS® Plus, stretch panels on the torso for exceptional breathability, comfort, and freedom of movement, as well as delivering a lighter weight and a lower profile than a traditional leather accordion panel (the A-CS® Plus panels are about 9% lighter than leather panels). Another key advantage of using A-CS® Plus is its superior stretch performance; A-CS® Plus has about 30% elongation, and offers an increase in tear resistance of 300% compared to HRSF (Hyper Resistant Stretch Fiber), and an increase in cut resistance by 600% versus leather.
RIDEKNIT® engineered inner arms; RIDEKNIT® combines high abrasion and tear resistance with high flexibility, comfort, and mechanical stretch while still delivering superior comfort and high levels of breathability.