Builds on the strong reputation created by X30 for medium terrain and X40 for hard terrain, the X20 brings all types of motocross riders, from championship competitors to young beginners, a new level of performance in soft conditionsDeveloped on the race track with professional riders in top motocross competitions, the X20 features new Castle Block technology and a pattern layout proven to dramatically increase traction, cornering grip and the tire's working rangeCombined with Bridgestone's Castle Block, which unleash more edge effect and traction on firmer ground, the new X20 also gives riders more options across a wider range of terrainRedesigned block pattern with increased stiffness and edge component delivers stronger cornering grip and traction on muddy tracks, slippery sand and softer terrain ASPECT RATIO100Aspect Ratio100COMPOUNDSoftCONSTRUCTION- (Bias)CompoundSoftConstruction- (Bias)LOAD/SPEED INDEX57MLoad/Speed-Index57MMARKET SEGMENTOff-RoadMarket SegmentOffroadMounting PositionFrontPOSITIONFrontPRODUCT NAMETirePositionFrontProduct NameTireRIM DIAMETER21Rim Diameter21''SECTION WIDTH90SIDEWALLBlackwallSTYLEMedium Terrain| MX| Soft TerrainSidewallBlackwallStyleMX, Medium Terrain, Soft TerrainTIRE SIZE90/100-21TREAD PATTERN/MODELBattleCross X20TUBE TYPETube TypeTire Size90/100-21Tread Pattern/ModelBattleCross X20Tube TypeTube TypeUNITSEachUnitsEachVendor part number9790Width90