The Battlecross X31 is for a broader range of intermediate terrain in big bike sizes. 

FEATURES

• True intermediate tire with improved traction in a broader range of terrain
• Cooling Fins promote consistent traction and feel under continuous use (such as during a moto) by dispersing heat an minimizing inflation pressure gain.
• Bunker Groove technology
  • increased casing flex in tread area improves lug contact for greater tractiion in harder terrain while helping to maintain sidewall stability
  • provides additional biting edges when lugs are full embedded in soft terrain
• Symmetric front tire design enhanced with Castle Block promotes braking stability while increasing biting edges and contact pressure on soft and slippery surfaces.
• Asymmetric rear tire tread design featuring Castle Block enhances cornering traction by increasing lateral biting edges