Specs:
-Outside diameter of the air filter joint part is about 40mm
-Distance between mounting holes (from center to center) is about 48mm
-Inside diameter of the throttle lift is about 22mm
Suitable for: Honda CRF50 type engine, Lifan 125, 140, YX 125, 140, GPX125, GPX140. Applied in Pit bikes / Mini MotoX, like Forza MotoX (FMX125, FMX140), Pitpro, DHZ, Stomps brands, and some of the other Chinese branded pit bikes