Package include: 1pc 3.4L frame 135mm (Black), 1pc Bottom Bracket, 1pc Headset, 1pc Petcock

Bottom Bracket Three Size Options (68x116mm, 68x120mm, 68x122mm)

Please clean the black color painting on thread of bottom bracket before you assemble the crankset.

Note: If buyers' bike rear wheel is with quick release,we suggest buyers do not buy the gas frame unless buyers are professional

For 2-Stroke & 4-Stroke Engines.

Requirement on headset size:1 1/8"; 

Requirement on petcock size:10*1.5mm

Bottom bracket 1.732" /44mm out diameter;

Head Tube: 150mm

Frame made especially heavy duty for gas engine applications Available with 135mm rear frame width for either single speed or multi-speed bikes.

The width and Inner Diameter(including depth of screw) of the bottom bracket: 68mmx35.4mm/2.677inx1.3937in

Gas Tank Cap included;

Kickstand Excluded

Rear Width: 135mm

Diameter of down tube: 42mm

Requirement on switch of gas frame: 10*1.5mm

Required for seat post: 27.2mm

Required for seat post clamp: 31.8mm

Work with Disc Brake and Coaster Brake

3.4L Frame Youtube Link: https://youtu.be/XgKiZlsJhOA

PLEASE NOTE 1: the best safe speed if racing: 35km/h；If buyers' bike rear wheel is with quick release,we suggest buyers do not buy the gas frame unless buyers are professional;