botas sparco k rapid rotor 2025K RAPID The K Rapid shoe was developed using feedback from Sparco's professional drivers. This development program created some unique features for the new shoe. The K Rapid does not have a traditional tongue, it uses a durable stretch fabric called Jaquard that acts as an upper stretch panel and an advanced rotor lace system wrapping the entire foot to minimize unwanted movement and maximize comfort and control on the track. This unique upper gives