NCY Crankcase Ventilator Decompression Tube for 50cc – 150cc 4-Stroke GY6 Scooters COMPATIBILITY: Amigo – 50/150 4-Stroke Scooters Apollo – 50/150 4-Stroke Scooters Baotian – 50/150 4-Stroke Scooters Baron – 50/150 4-Stroke Scooters Bintelli – 50/150 4-Stroke Scooters BMS – 50/150 4-Stroke Scooters Coolster – 50/150 4-Stroke Scooters CSC – 50cc 4-Stroke Scooters Diamo – 50/150 4-Stroke Scooters Flyscooter – 50/150 4-Stroke Scooters Ice Bear – 50/150 4-Stroke Scooters Italica – 50/150 4-Stroke Scooters JCL – 50/150 4-Stroke Scooters Jonway – 50/150 4-Stroke Scooters Kandi – 50cc 4-Stroke Scooters Kinroad – 50/150 4-Stroke Scooters KMD – 50/150 4-Stroke Scooters Kymco – 50/150 4-Stroke Scooters Lance – 50/150 4-Stroke Scooters Leike – 50/150 4-Stroke Scooters Linhai – 50/150 4-Stroke Scooters Longbo – 50/150 4-Stroke Scooters Motobravo – 50/150 4-Stroke Scooters Motofino – 50/150 4-Stroke Scooters Motorino – 50/150 4-Stroke Scooters NST – 50/150 4-Stroke Scooters Peace – 50/150 4-Stroke Scooters Puma Cycles – 50/150 4-Stroke Scooters Redstreak – 50/150 4-Stroke Scooters Roketa – 50/150 4-Stroke Scooters Scootstar – 50/150 4-Stroke Scooters Schwinn – 50/150 4-Stroke Scooters SSR – 50/150 4-Stroke Scooters SUNL – 50/150 4-Stroke Scooters Supermach – 50/150 4-Stroke Scooters SYM – 50/150 4-Stroke Scooters Tank Sports – 50/150 4-Stroke Scooters TaoTao – 50/150 4-Stroke Scooters Trailmaster – 50/150 4-Stroke Scooters Veloz – 50/150 4-Stroke Scooters Verucci – 50/150 4-Stroke Scooters Vitacci – 50/150 4-Stroke Scooters Viva – 50/150 4-Stroke Scooters Wolf – 50/150 4-Stroke Scooters Xingyue – 50/150 4-Stroke Scooters ZNEN – 50/150 4-Stroke Scooters Decompression tubes replace your dip stick and allow excess crankcase pressure to be released. We recommend installing these tubes along side any cylinder kit. **