This gear shift drum is designed for motorcycle transmission systems and is available in 5-speed and 6-speed configurations.It serves as a functional replacement part to restore shifting performance.The component is manufactured for direct installation on applicable engine models. Compatibility includes NC250, NC250S, and NC300S engine series.This part fits Motoland WRX 250, WRX 300, XT250 ST, and XT300 ST FA models.It is compatible with Avantis A7, PTS 300 CARB, 300 CARB ARS, 300 PRO/EFI, and related variants including the 2021 models.The drum suits SM-Motors GR7 and GR8 series for NC250, 250S, and 300S engines, including the GR8 F300L PRO.Additional compatibility extends to BRZ X6S 300cc, X6M 300cc (2022), X6S-250CC, and X6M-250CC units.It also fits Motax EX 300, EXR 300, and LD 300 models, as well as FXMoto X3, X7, and X8 motorcycles.Compatibility includes Kayo and Bosuer brands. For the NC450 standard cylinder head configuration, this shifter drum fits Motoland WRX 450 and XT450 models.It is suitable for Avantis NC450 standard cylinder head engine series.The part also fits SM-Motors GR8 F450L PRO, GR7 NC450, and GR8 NC450 configurations.Further compatibility includes FXMoto X7 and X8, along with models from BRZ, Kayo, Bosuer, Kews, Beihai, and Zuumav.Please verify your specific motorcycle model and engine type before purchase to ensure proper fitment.The package contains one gear shift drum.