Alpinestars GP Plus V4 Navy Racing Leathers

Men’s one-piece motorcycle suit with flexible performance construction

The Alpinestars GP Plus V4 navy racing leathers pair a dark-blue body with black sleeves and vivid red-fluo accents. For riders choosing a men’s leather track suit, this colorway offers a darker center panel with strong contrast at the shoulders, waist and shins. Explore the model alongside our Alpinestars one-piece suit selection.

Signature color blocking

An angled red-fluo chest stripe sits above a large white star and ASTARS lettering. The navy front is divided by the center zipper, with a smaller MATRYX wordmark below the main graphics. Black contour panels frame the ribs, while white collar logos, contrasting shoulder emblems and forearm graphics carry the branding through the upper body.

From behind, a black star-marked hump sits above the navy back panel. Shaped seams, ribbed shoulder-blade inserts and large white ASTARS lettering lead into the red-fluo Tech-Air Ready lumbar band. Black seat and calf sections keep the lower rear understated, with white thigh branding and red-fluo outer-leg accents. The front knees combine white star-marked external sections, black slider pucks and bright shin panels.

Alpinestars names this combination Black / Red Fluo / Dark Blue. Our explanation of lighting and screen-related shade variation helps when comparing the navy and fluorescent tones in photographs.

Engineered expansion

Flex Plus bovine leather forms the main shell. A-CS® Plus at the torso sides and shoulder blades combines with HRSF inserts at the inner arms, chest, crotch and rear legs. MATRYX® is specified at the lower legs. Perforations across the chest, abdomen and thighs provide ventilation; a detachable Polygiene®-treated comfort liner completes the interior.

Know the equipment

• Upper-body armor: Nucleon Race shoulders and GP-R elbow and forearm protectors.
• Lower-body armor: GP-R knee and shin protectors, plus Bio-Flex hip inserts.
• Protector ratings: CE Level 1 for the specified internal armor.
• External surfaces: GP DFS shoulder, elbow and knee sliders.
• Garment standard: AAA classification under EN 17092-2:2020, separate from the armor ratings.

Confirming compatibility

The GP Plus V4 accommodates Tech-Air® 5 or Tech-Air® 10, following Alpinestars’ instructions for the chosen combination. Airbag systems are purchased separately. Confirm the required fit and deployment clearance before use.

Fit before checkout

Use the exact model’s sizing guidance and the measuring references in the gallery. Check torso length, forward reach and knee bend with your intended layers and protective equipment. Soft stretch cuffs finish the wrists and ankles; assess these interfaces with your gloves and boots. For assistance, send your GP Plus V4 fit questions with your measurements.

Post-ride preservation

• Leather, collar and colored graphics: Remove dust gently and spot-test only manufacturer-approved care products.
• MATRYX, stretch inserts and ribbed zones: Avoid soaking, abrasive brushing and general leather conditioner on technical materials.
• Liner and cuffs: Air after riding and clean according to their labels.
• Armor, sliders, zipper and openings: Clear loose grit, inspect attachments and seek assessment for damaged components.
• Shoulders and back profile: Support on a strong, broad hanger; keep away from direct heat and avoid compression.

Do not machine-wash or tumble-dry the assembled suit. Our guide to gentle leather cleaning and specialist stain care provides general maintenance advice. Follow Alpinestars’ instructions first for this mixed-material protective garment.

Rider questions

Where is MATRYX used on this GP Plus V4?

Alpinestars specifies MATRYX® at the lower legs. The MATRYX wordmark on the front does not identify the material of every surrounding torso panel.

Should I automatically go up a size for an airbag?

Do not use a blanket sizing rule. Follow the instructions for the exact GP Plus V4 and Tech-Air combination, allowing the specified expansion clearance. Check the complete setup before riding.

Are the gallery’s measurement references in inches?

The supplied chart and measuring diagram are labeled in centimeters. Keep your measurements in the same units and confirm the correct GP Plus V4 manufacturer sizing before selecting an option.

Can I put the suit straight into a garment bag after a sweaty session?

Let moisture escape first in a ventilated space at room temperature. Follow the liner’s care label, and store the suit only when fully dry. Use a breathable cover without compressing the raised back profile.

What details identify the correct replacement armor or sliders?

Use the full GP Plus V4 model name, the component’s markings and photographs of its attachment or pocket. Confirm the approved replacement with Alpinestars; matching color or approximate size alone does not establish compatibility.