Born in BMX racing competition, the Speed Booster is designed to meet the demands of those who push the limits. Thanks to their new LSG+ compound that's exclusive to the Speed Booster it's lightweight, has better stability when cornering, great rolling resistance at high speeds and super grippy track contact. Max pressure rating: 65 psi ###section### Product Specs WHEEL SIZE: 20" MAX PRESSURE: 110 PSI WEIGHT: TBC PACK SIZE: Single Size: 1-3/8"