Add some colour to your ride with the new Nile Blue & Military Green GravelKing limited edition lineup. Looking for a tyre that\'s more aggressive than the mixed-tread GravelKing? The GravelKing SK might just be the tire you need for the more hard-core roads. Aggressive knobs, ZSG Natural rubber compound, puncture protection breaker and AX-α special low rolling resistance casing make the GravelKing a go-anywhere tyre. This colour edition range of GravelKings is available for a limited time only.