X-PRO Gas Tank Cap For 50 cc 70cc 90 cc 110CC ATV 110 cc Quad 110C 4 Wheeler Taotao SunL JCL Coolster Kandi Supermach Tank Gas Tank Cap. Top Quality Guaranteed. Gas Tank Cap For 50-110cc ATV Inside diameter: 40mm Please identify X-PRO NO. 1 China Motorcycle Parts Brand, Better Then OEM Parts.