In the context of the Yamaha RX 100/135 motorcycles, the terms "G1" and "G2" refer to different generations or versions of the engine. The G1 and G2 designations are not directly related to the bore size of the engine. Instead, they indicate different iterations or models of the RX series. Let's discuss these versions in more detail:
G1: The G1 refers to the first generation of the Yamaha RX series motorcycles, which includes models like the RX 100 and RX 135. The RX 100 was introduced in the 1980s and gained popularity as a reliable and efficient two-stroke motorcycle. The engine displacement of the RX 100 is approximately 98cc.
G2: The G2 denotes the second generation of the Yamaha RX series, which encompasses models like the RX 135 and RXG. The RX 135, introduced as an upgraded version of the RX 100, featured a larger engine displacement of around 132cc. The RXG is a variant of the RX series with off-road capabilities.
To summarize, the G1 and G2 designations do not refer to the bore size of the engine in the Yamaha RX 100/135 motorcycles. Instead, they distinguish between different generations or versions of the RX series, with the G1 referring to the first generation and the G2 representing the second generation.