JT Sprockets
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JT Sprockets 420 Steel Rear Sprocket, 47T (JTR1798.47)

Part # JTR1798.47
Item #988005
Fits 5 motorcycles
  • Yamaha
    • YZ65 J,K,L,M · 2018–2021
    • YZ65 N,P · 2022–2023
    • YZ65 R · 2024
    • YZ65 S · 2025
    • YZ65 T · 2026
$36.99
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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
JT Sprockets Steel Rear Sprocket — JTR1798.47 (47T)
Product Details

A C49 high-carbon steel rear sprocket — JT's bread-and-butter replacement that swaps in like the OEM part for hundreds of street and sport fitments.

  • C49 high-carbon steel, induction-hardened on the tooth crowns for wear life that outlasts cheap stamped aluminum on the street.
  • CNC-machined to OEM bolt pattern and profile so it lines up to your hub without modification.
  • Same fitment universe as JT's zinc-black (ZBK) and self-cleaning (SC) variants on this base.
  • Built by JT Sprockets — the world's largest sprocket manufacturer, with sprocket production for major OE bike brands.
  • Sized to OEM gearing with shorter/taller tooth-count options available on select fitments.

Intended use: street, sport, sport-touring, adventure.

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