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

Part # JTR1478.40
Item #JT147840
Fits 27 motorcycles
  • Polaris
    • 400L Sport · 1994–1999
    • 300 Xpress · 1996–1999
    • 250 Cyclone · 1987
  • Kawasaki
    • ZX400 C2 (Z400F2) · 1984–1987
    • GPZ400 · 1984–1997
    • GPZ550 (ZX550A1-A6) Unitrack · 1984–1992
    • ZX-10R (ZX1000 C1-C2) Ninja <<< 520 Chain Conversion · 2004–2005
    • Ninja ZX-10R · 2006–2024
    • ZX-10R (ZX1002 FKF.FKFA) Ninja <<< 520 Chain Conversion · 2019
    • ZX-10R (ZX1002 ) Ninja ABS <<< 520 Chain Conversion · 2025
    • ZX-10R (ZX100 RHFA) Ninja KRT ABS <<< 520 Chain Conversion · 2016–2018
    • Ninja ZX-10RR · 2017–2018
    • Ninja ZX-10RR · 2021–2022
    • ZX-10RR (ZX1002 GKF) Ninja <<< 520 Chain Conversion · 2019
    • Ninja ZX-6R · 1998–2004
    • Ninja ZX-6RR · 2003–2004
    • ZX-6R (ZX636 A1P) Ninja <<< 520 Chain Conversion · 2002
    • ZX-10R (ZX1002LPFAN ) Ninja <<< 520 Chain Conversion · 2023–2024
    • ZX-10R (ZX1002 ) Ninja <<< 520 Chain Conversion · 2025
    • ZX-10R (ZX1002 LSFAL) Ninja KRT ABS <<< 520 Chain Conversion · 2025
    • 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
    • Ninja 1000 · 2013–2019
    • ZX-7RR (ZX750 N1-N2) Ninja <<< 520 Chain Conversion · 1996–1999
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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.

Fitment

Fits 27 motorcycles across Kawasaki, Polaris — including Polaris 400L Sport 1994–1999; Kawasaki ZX400 C2 (Z400F2) 1984–1987; Kawasaki GPZ400 1984–1997; Kawasaki GPZ550 (ZX550A1-A6) Unitrack 1984–1992; Polaris 300 Xpress 1996–1999; Kawasaki ZX-10R (ZX1000 C1-C2) Ninja <<< 520 Chain Conversion 2004–2005; Kawasaki Ninja ZX-10R 2006–2024; Kawasaki ZX-10R (ZX1002 FKF.FKFA) Ninja <<< 520 Chain Conversion 2019. 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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