Tyre Supply for 3 Racing Series in Japan from 2026
S1E has been newly adopted as the designated brand in 3 kart series of “Avanti.”
New Kart Tyre Brand, “NEXXIVE”
This is a Japanese brand succeeding to remarkable achievement in karting tyres. Our passion for karting creates your fantastic experience with a new generation of karting tyres.

Medium compound for hobby categories and amateur racing


Hard compound for endurance events and rental karting


Hardest compound for rental karting

S1E has been newly adopted as the designated brand in 3 kart series of “Avanti.”
Firstline Ltd. hereby introduces the newest item, “S1E” to its lineup. S1E is a medium compound tyre that will provide…
S1K has been newly adopted as the designated brand in 4 kart series of “MZ Senior.”