Round profile with micro-knurled surface and siping that utilizes a continuous center line for acceleration right out of the gate Designed for BMX racing the LSG+ compound is a harder, grippier rubby for extreme acceleration and continued speed on hard pack and pavement LSG+ - Low Specific Gravity + compound, designed for have the least rolling resistance on hard park BMX courses while keeping optimal grip for corners and berms Standard 20x1.75 406 Fold Bk/Blk 90 60a LSG+ NoUPC/EAN/GTIN: 848712067344