This intake / inner valve spring is typically found in the Valve Tranny Assy / Camshaft Assy / Air Mix Device / Valve System / Camshaft and Valves section of several part manuals. Commonly used for but not limited to 4-stroked water cooled 172MM / 250cc engines. It is most popularly known for its use in CF Moto CF250 172MM / V3 / V5 / CF250 172MM-A / CF250 172MM-B / CF250T-5 / CF250T-5A, Blade XTX250, Hammerhead SS250 / Twister UM250IIR / GTS250 / GT250, Baja Reaction 250 / BR250 / Dune 250 / DN250, Diamo Wolverine XF250-2A-2AR, Gio Bikes GT250, Hammerhead SS250 / Twister UM250IIR / GTS250 / GT250, Jonway 250, Joyner 250 / Sand Viper 250cc / Viper JNSZ250DN / Viper 250 (SZ250DI) / Dirt Devil 250 (SZ250DS) / Dirt Devil SZ250DL, Kinroad 250cc XT250GK-2 / XT250 GK-7, QLink Legacy 250 / Commuter 250, Roketa 250, SunL SLGK-250-2A / XF250-2A Buggy / XF2502AR Buggy, Yerf Dog, Tomberlin ATV, as well as many other brands of ATVs, dirt bikes, scooters, go karts (buggies), and engines with alternative profile names.

Manufacturer Part Numbers:

• CF Moto Part Numbers: 0110-022003-0050, 172MM-022003 “INNER SPRING, VALVE”
• Hammerhead Part Number: 172MM-022003 “INNER VALVE SPRING”
• Joyner Dirt Devil 250cc Part Numbers: 172MM-022003, SZ02004006 “INNER VALVE SPRING” or “SPRING, VALVE INNER”
• Joyner Sand Viper 250cc Part Number: 172MM-022003 “VALVE SPRINGL.INNER”
• QLink 250cc Part Number: 172MM-022003 “INNER SPRING, VALVE”
• Baja Dune Part Number: DN250-509 “SPR VALVE INNER”
• Baja Reaction Part Number: BR250-373 “SPRING, INNER VALVE”
• Kinroad Part Number: 14761-SCC0-0000 “SPR VALVE INNER”
• SunL Part Number: XF172MM-1005004 “INNER SPRING, VALVE”