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JT Sprockets 420 Steel Rear Sprocket (JTR801)

Part # JTR801.37
Item #JT80137
Fits 67 motorcycles
  • Kawasaki
    • Z125 Pro · 2017–2024
    • KLX110 · 2003–2020
    • KLX110 · 2022–2024
    • 125 Joy-R · 2008–2010
    • KLX110 A1 · 2002
    • KLX110 R CMF · 2021
    • KLX110 R CFS · 2025
    • KLX110 R CTF · 2026
    • KLX110L · 2010–2020
    • KLX110L · 2022–2024
    • KLX110 R L DMF · 2021
    • KLX110 R L · 2025
    • 115 Kaze-R · 2013–2015
    • MAX100
    • AE/AR 80
    • AE80 · 1981–1989
    • AR80 · 1981–1992
    • ZX130 · 2008–2010
    • AE50
    • AE50 · 1982–1983
    • AR50 A1 · 1982–1983
    • AR50 · 1981–1998
  • Suzuki
    • PV50
    • PV50 · 1981–2000
    • FM50 A Landy · 1980–1998
    • GT50
    • GT50 · 1977–1980
    • RV50
    • RV50
    • RV50 C
    • RV50 X / D Van Van · 2015–2016
    • DR-Z110 · 2003–2004
    • DR-Z110 K5 · 2005
    • FR70 · 1975–1987
    • FR80 B
    • FR80
    • FR50 · 1975–1986
    • ALT50 D,E · 1983–1984
    • LT A-50 K1 · 2001
    • A50
    • AP50
    • AP50 · 1975–1978
    • GSX-R50 (RB50 H) · 1988
    • AC50
    • RM50 · 1978–1982
    • RM60 · 1980–1983
    • TM75 L/M/A · 1974–1976
    • TS75 M/A/B · 1975–1977
    • DR50
    • OR50 · 1979–1980
    • RG50 EW1-4,EWH,EWWH,EWJ,EWCJ/L · 1990–1991
    • RM60 N · 1979
    • ZR50 X1
    • TS50 · 1979–1984
    • ZR50 · 1980–1988
    • ZR50 K/N (X1E) · 1979–1981
    • ZR50 SL GT Chopper
    • ZRS 50 RG
    • TS50 KN · 1979
    • ZR50 SL
    • ZR50 SK
    • APX50 Auto
    • APX50 Auto · 1985–1989
    • ER21 50
    • TSX50 (TS50XK-) · 1984–2000
    • TS50 ER · 1980–1983
    • TSX50 · 1992–1996
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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
JT Sprockets 420 Steel Rear Sprocket (JTR801)
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

Fits 67 motorcycles across Suzuki, Kawasaki — including Kawasaki Z125 Pro 2017–2024; Suzuki PV50; Suzuki PV50 1981–2000; Suzuki FM50 A Landy 1980–1998; Suzuki GT50; Suzuki GT50 1977–1980; Suzuki RV50; Suzuki RV50. Verify fit for your exact bike with the fitment checker at garamoto.com.

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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