Key features

• •Bicycle Gas Frame 2.75L for 2-Stroke & 4-Stroke Engines. Requirement on switch of gas frame: 10*1.5mm; Rear width:135mm
• •Requirement on headset size:1 1/8"; bottom bracket 1.732" /44mm diameter;the width and Inner Diameter(including depth of screw) of the bottom bracket:68mmx35.4mm/2.677inx1.3937in
• •Gas Tank Cap included;Kickstand Excluded
• •Diameter of downtube:42mm; Required for seat post:27.2mm;Required for seat post clamp:31.8mm
• •PLEASE NOTE 1: the best safe speed if racing: 35km/h; 2.If buyers' bike rear wheel is with quick release,we suggest buyers do not buy the gas frame unless buyers are professional. Any questions,please contact us firstly! we can help you solve the problem until you are satisfied.