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JT Sprockets 420 Steel Rear Sprocket (JTR461)

Part # JTR461.50
Item #JT46150
Fits 18 motorcycles
  • Kawasaki
    • KX80 L1 · 1988
    • Ninja H2 · 1986–1987
    • KX80 L2 · 1989
    • KX80 L3 · 1990
    • KX80 · 1986–1987
    • KX80 · 1989–2000
    • KX100 C2 · 1999
    • KX85 · 2001–2025
    • KX80 W3 · 2000
    • KX100 C1 · 1998
    • KX100 · 1987–1996
    • KX100 · 2000–2021
    • KX112 · 2022–2023
    • KX112 ARF · 2024
    • KX112 ASF · 2025
    • KX100 B7 · 1997
    • KX80 N1 · 1988
  • Suzuki
    • RM100 K3 · 2003
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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
JT Sprockets 420 Steel Rear Sprocket (JTR461)
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.

Fitment

Kawasaki: KX80 L1 1988 · Ninja H2 1986–1987 · KX80 L2 1989 · KX80 L3 1990 · KX80 1986–1987 · KX80 1989–2000 · KX100 C2 1999 · KX85 2001–2025 · KX80 W3 2000 · KX100 C1 1998 · KX100 1987–1996 · KX100 2000–2021 · KX112 2022–2023 · KX112 ARF 2024 · KX112 ASF 2025 · KX100 B7 1997 · KX80 N1 1988

Suzuki: RM100 K3 2003

Specifications

Sprocket PositionRear
MaterialC45 high carbon steel
Surface TreatmentHeat-treated and beadblasted
Best ForOff-road / Trail, Street

Verified from Garamoto’s catalog & fitment data.

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