Compatible with Front Sprocket OEM Parts Honda 23801-MEY-670, 23801-MKE-A50, 23802-MEN-730 Compatible with Rear Sprocket OEM Parts 41201-KPT-900, 41202-KZ3-J40, 41202-MKE-A00, 41202-MAC-740 Fits 2004-2020 Honda CRF450R Compatible with Drive Chain OEM Parts Honda 40540-K87-A02, 40540-K95-A21, 40540-K95-A41, 40540-K95-A51, 40540-KCN-306, 40540-KCR-306, 40540-KPM-305, 40540-KRN-A31, 40540-KRN-A32, 40540-KSC-003, 40540-KV3-405, 40540-KV3-406, 40540-KYJ-902, 40540-MEN-003, 40540-MGS-D31, 40540-MJF-A02, 40540-MKE-A12 When upgrading to an X-Ring Chain a spacer is needed on the countershaft sprocket to prevent grinding; Sprocket Material consists of SAE 1023 structural carbon steel; Oil - LT-001A High Temperature Chain Oil Included Items in This Bundle:

(QTY 1) NICHE 519-CDC2564H Gold X-Ring Chain 120 w/ Master Link

Substitute For OEM Part Numbers(s): 92057-0675, 40540-MY6-306, 40540-MKE-AF1, 40540-MKE-A12, 40540-MJF-A02, 40540-MGS-D33, 40540-MGS-D31, 40540-MEN-J02, 40540-MEN-003, 40540-KYJ-902, 40540-KYJ-901, 40540-KV3-406, 40540-KV3-405, 40540-KSC-003, 40540-KRN-A32, 40540-KRN-A31, 40540-KPM-305, 40540-KCR-306, 40540-KCN-306, 40540-K95-A51, 40540-K95-A41, 40540-K95-A21, 40540-K87-A02, 40532-KA5-681, 40530-KT0-A21, 06405-KV3-P10, 06405-KV3-P00

(QTY 1) NICHE 519-CDS2251P Front Drive Sprocket

Substitute For OEM Part Numbers(s): 23802-MEN-730, 23802-KZ3-860, 23801-MKE-A50, 23801-MEY-670

(QTY 1) NICHE 519-CDS2405P Rear Drive Sprocket

Substitute For OEM Part Numbers(s): 41202-MKE-A00, 41202-MAC-740, 41202-KZ4-B00, 41202-KZ3-J40, 41201-MBN-670, 41201-KPT-900, 41201-KCE-670

Fits The Following OEM Models:

Honda CRF450RX: 2017-2018
Honda CRF450R-S: 2023
Honda CRF450R 50th Anniversary Edition: 2023
Honda CRF450R: 2004-2025
Honda CR250R: 2004-2007