JT Sprockets
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JT Sprockets 428 Steel Rear Sprocket, 54T (JTR1843.54)

Part # JTR1843.54
Item #206734
Fits 8 motorcycles
  • Yamaha
    • TT-R125 · 2002–2004
    • TT-R125 E · 2005–2010
    • TT-R125 LW · 2002–2004
    • TT-R125 L LE,LW,LWE · 2005–2021
    • TT-R125 LEN,LEP · 2022–2023
    • TT-R125 LER1 · 2024
    • TT-R125 LES1 · 2025
    • TT-R125 LET1 · 2026
$36.99
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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
JT Sprockets Steel Rear Sprocket — JTR1843.54 (54T)
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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