Feature●Package including 2.4L Tank Frame 1pc, 26" Suspension fork 1pc, 1-1/8" headset 1pc●Rear Disc brake bracket and front mount pedestal works well with gas motor front mount bolts 8mm；rear width:135mm; the width and Inner Diameter of the bottom bracket:68mmx50.8mm/2.677inx2in●Frame made especially heavy duty for gas engine applications Available with 135mm rear frame width for either single speed or multi-speed bikes.●38mm diameter downtube 70 degrees angle V frame●Include 26" front fork: suspension with double shoulder, compatible with our gas tank frames Include Headset is 1 1/8 and works well with the fork and frameDescription PLEASE NOTE 1: the best safe speed if racing: 35km/h；Head tube: 150mm; bottom bracket 2" diameter. Any questions,please contact us firstly!