Circo’s entry-level racing compound, also used in 2WD rally. It works from 100°C to 700°C — enough range for club racing without the cold-lap penalty of a full race compound.
These are the compounds we stock for the Nissan Silvia / Skyline (standard calipers) whose published friction and operating temperature come closest to Circo S99. They are a starting point for switching brands — not a guarantee of identical feel, because each manufacturer measures friction on their own equipment.
WinmaX W5
Very closeWinmaX’s standard circuit model, and the default club racing and rally choice in the range.
Matched on published friction and operating temperature.
From $321 · in stockCompare every compound for the Nissan Silvia / Skyline (standard calipers)
“Confidence into the corner is worth more than power out of it.”