DIRT JUMP Classic is back! SONIC BOOM is a high performance dirt jump frame. When you ride into the dirt jump, to enhance supportability from is necessary. It made of Aluminum that's rigid and responsive but lightweight, which built for doing stunts, tricks and go on rampaging. It designed with all the new up to date dirt jump features such as a tapered head tube and super-short chain stay & wheelbase length. Its rear dropouts sit on horizontal sliding system for easy chain tension and also adjust chainstay length. Specifications: • Material: Aluminum • Size: 12.8” • Tapered Head Tube: IS42/IS52 • Seat Post: 30.9mm • BB: 73mm W/ISCG05 mount • Weight: 2320g • Color Available: Matte Black / Matte Violet Please visit our website at http://www.ecomtb.com.my OR https://shopee.com.my/eco_mtb ** There is 1-3cm errors due to manual measurement. Please kindly understand. ** Actual product colour may slightly vary due to photographic lighting sources or your monitor settings. ** WE DO NOT DO COD ** ONLINE ONLY ** We support original products only. ** PRICE INDICATED IS ALREADY BEST PRICE, EXCLUDE COURIER