Description
The Birel ART Blue rear axle is designed for kart setups that require increased chassis flex and improved rear grip in low-traction conditions. Manufactured with a 30 mm diameter, 5 mm wall thickness, and 960 mm overall length, this axle matches the standard specification used on many Birel ART chassis platforms. The Blue compound is softer than the Yellow axle, allowing the chassis to flex more when the kart loads through corners.
Axle stiffness plays an important role in how a kart transfers weight during cornering. A softer axle allows the rear of the chassis to flex more as the kart enters and exits turns, helping the rear tires maintain better contact with the track surface. This additional flex can improve traction and stability when track temperatures are lower or when racing in wet conditions.
Drivers often adjust axle compounds as part of their chassis setup depending on track grip, weather conditions, and driving style. A softer axle can help increase mechanical grip and improve corner-exit traction when the track surface offers limited grip.
