JConcepts black compound tyres
JConcepts introduce an additional compound to their line of successful 1/10th off-road racing tyres. Black compound, produced for the softest feel yet in the JConcepts line of compounds, the Mega Soft is especially useful in cold conditions or when grip is hard to come by on slick or dusty track conditions. The first tyres to receive the black compound treatment are the Bar Codes, Double Dees, Pressure Points and 3Ds.
Source: JConcepts [jconcepts.net]