At DMG Motorsports, we present the FIRE POWER Front Countershaft Sprocket — a 13-tooth, 420-size Yamaha sprocket engineered for lightweight performance, strength, and precise chain engagement. Its nickel-chromium steel construction is case hardened for durability, while precision CNC machining maintains extremely close tolerances. Confirm fitment for your specific Yamaha application before ordering. ([firepowerparts.com](https://firepowerparts.com/front-cs-sprocket-steel-13t-420-yam-255-5420013/?utm_source=openai))

Features:

• 13-tooth front countershaft sprocket
• 420 chain size
• Nickel-chromium steel, case hardened
• Ultra-light design while retaining maximum strength
• Precision CNC machined to extremely close tolerances
• Self-cleaning mud grooves where applicable
• Manufacturer part number: MX-03287-13-4
• SKU: 255-5420013

Fitment