Sparco Rib Pro K4

The Rib Pro K4 is specifically engineered for karting, where lateral G-forces and seat contact create unique stress on the ribs. While it provides excellent torso protection, it is optimized for the upright seating position found in karts rather than the reclined position of formula cars.

To get the right fit, measure the circumference of your chest at the widest point while wearing your racing suit. Because the vest features fully adjustable shoulder and waist straps, you have some flexibility, but it should sit snugly against your ribs without restricting your ability to breathe deeply.

Yes, the K4 is designed with a low-profile, anatomically shaped construction specifically to be worn under standard racing suits. Its lightweight polyethylene shell is slim enough that it shouldn't interfere with your suit's fit or your range of motion in the cockpit.

Not at all. The panels are anatomically shaped to follow the natural contours of your body, allowing you to steer and operate pedals without feeling restricted. The design prioritizes impact absorption while maintaining the flexibility needed for aggressive cornering.

The vest incorporates materials and a structural layout that promote airflow between the shell and your body. This helps dissipate heat and moisture, which is critical for maintaining focus and reducing physical fatigue during longer races or extended practice sessions.