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JT Sprockets 520 Steel Rear Sprocket, 40T (JTR1478.40)

Part # JTR1478.40
Item #JT147840
Fits 41 motorcycles
  • Polaris
    • 400L Sport · 1994–1995
    • 400L Sport · 1996–1999
    • 300 Xpress · 1996–1999
    • 250 Cyclone · 1987
  • Kawasaki
    • ZX400 C2 (Z400F2) · 1984–1987
    • GPZ400 · 1984–1987
    • GPZ550 (ZX550A1-A6) Unitrack · 1984–1992
    • ZX-10R (ZX1000 C1-C2) Ninja <<< 520 Chain Conversion · 2004–2005
    • ZX-10R (ZX1000 JBF,JCF,JDF,JEF,JFF) Ninja <<< 520 Chain Conversion · 2011–2015
    • ZX-10R (ZX1000 KBF,KCF,KDF,KEF,KFF) Ninja ABS <<< 520 Chain Conversion · 2011–2015
    • ZX-10R (ZX1000 RGF,RGFA,RHF,RHFA,RJF,RJFA) Ninja <<< 520 Chain Conversion · 2016–2018
    • ZX-10R (ZX1002 FKF.FKFA) Ninja <<< 520 Chain Conversion · 2019
    • ZX-10R (ZX1000 SGF,SGFA,SHF,SHFA,SJF,SJFA) Ninja ABS <<< 520 Chain Conversion · 2016–2018
    • ZX-10R (ZX1002 EKF,EKFA,ELF) Ninja ABS <<< 520 Chain Conversion · 2019–2020
    • ZX-10R (ZX1002 ) Ninja ABS <<< 520 Chain Conversion · 2025
    • ZX-10R (ZX100 RHFA) Ninja KRT ABS <<< 520 Chain Conversion · 2016–2018
    • ZX-10R (ZX1002 EKFA,ELFA) Ninja KRT ABS <<< 520 Chain Conversion · 2019–2020
    • ZX-10RR (ZX1000 ZHF,ZJF) Ninja ABS <<< 520 Chain Conversion · 2017–2018
    • ZX-10RR (ZX1002 GKF) Ninja <<< 520 Chain Conversion · 2019
    • ZX-6R (ZX600 G1-G2,J1-J3) Ninja <<< 520 Chain Conversion · 1998–2002
    • ZX-6RR (ZX600 K1,M1) Ninja · 2003–2004
    • ZX-6R (ZX636 A1P) Ninja <<< 520 Chain Conversion · 2002
    • ZX-6R (ZX636 B1,B2) Ninja · 2003–2004
    • ZX-10R (ZX1000 D6F,D7F) Ninja <<< 520 Chain Conversion · 2006–2007
    • ZX-10R (ZX1000 E8F,E9F,FAF) Ninja <<< 520 Chain Conversion · 2008–2010
    • ZX-10R (ZX1002 LMFAN,LNFAN) Ninja <<< 520 Chain Conversion · 2021–2022
    • ZX-10R (ZX1002LPFAN ) Ninja <<< 520 Chain Conversion · 2023
    • ZX-10R (ZX1002LPFAN ) Ninja <<< 520 Chain Conversion · 2024
    • ZX-10R (ZX1002 ) Ninja <<< 520 Chain Conversion · 2025
    • ZX-10R (ZX1002 LMFAL,LNFAL) Ninja KRT ABS <<< 520 Chain Conversion · 2021–2022
    • ZX-10R (ZX1002 LPFAL, LRFAL) Ninja KRT ABS <<< 520 Chain Conversion · 2023–2024
    • ZX-10R (ZX1002 LSFAL) Ninja KRT ABS <<< 520 Chain Conversion · 2025
    • ZX-10RR (ZX1002NMFNL,NNSNN) Ninja <<< 520 Chain Conversion · 2021–2022
    • ZX-10RR (ZX1002NPFNN) Ninja <<< 520 Chain Conversion · 2023
    • ZX-10RR (ZX1002TRFNN) Ninja <<< 520 Chain Conversion · 2024
    • ZX-10RR (ZX1002TSFNN) Ninja <<< 520 Chain Conversion · 2025
    • ZX-10RR (ZX1002TSFNL) Ninja ABS <<< 520 Chain Conversion · 2025
    • ZX1000 GDF Ninja 1000 <<< 520 Chain Conversion · 2013
    • ZX1000 HDF,MEF,MFF,WHF,WJF,WKF Ninja 1000 ABS <<< 520 Chain Conversion · 2013–2019
    • GPZ400 · 1984–1997
    • ZX-7RR (ZX750 N1-N2) Ninja <<< 520 Chain Conversion · 1996–1999
$36.99
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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
JT Sprockets Steel Rear Sprocket — JTR1478.40 (40T)
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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