JT Sprockets
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JT Sprockets 428 Steel Front Sprocket, 14T (JTF558.14)

Part # JTF558.14
Item #JT55814
Fits 27 motorcycles
  • Yamaha
    • YZ85 · 2002–2023
    • YZ85 R2 · 2024
    • YZ85 S2 · 2025
    • YZ85 T2 · 2026
    • YZ85 P LW · 2023
    • YZ85 R LW · 2024
    • YZ85 S LW · 2025
    • YZ85 T LW · 2026
    • TZR80 R · 1996
    • DTR125 (DT125R) · 1988–2003
    • DT125 RE · 2004–2006
    • DT125 R Everts · 2005–2006
    • DT125 X · 2005–2006
    • TDR125 · 1989–2001
    • TZR125 R · 1993–1996
    • TZR125 R (80 kmh) · 1997–1999
    • XVS125 Drag Star · 2000–2004
    • DT200 R · 1988
    • TZR125 RR · 1996–2000
    • XVS250 Drag Star · 2001–2004
  • Derbi
    • 125 GPR Nude · 2004–2008
    • 125 GPR Racing · 2004–2008
  • Gilera
    • 125 SC · 2006–2008
  • Kawasaki
    • Ninja 125 · 2019–2024
    • BX125 CTF 125 Ninja · 2026
    • Z125 Pro · 2021–2024
    • Z125 (BR125) MTF · 2026
$7.99
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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
JT Sprockets Steel Front Sprocket — JTF558.14 (14T)
Product Details

A direct-fit C49 high-carbon steel front sprocket from the world's largest sprocket maker — the standard for stock replacement on modern street, sport, and adventure bikes.

  • Self-cleaning SCM420 chromoly steel and C49 carbon steel construction, induction-hardened on the tooth profile for a hard wear surface over a tough core.
  • CNC-machined to OEM tooth profile so your existing chain runs without re-meshing issues.
  • Available with rubber-cushion damping inserts on select fitments — same noise/vibration spec as the OE part.
  • JT Sprockets is the world's largest sprocket manufacturer; produced in JT's UK and Thailand facilities to ISO-grade QC.
  • Sized for OEM gearing across most road, sport, and adventure platforms.

Intended use: street, sport, sport-touring, adventure.

Fitment

Fits 27 motorcycles across Yamaha, Kawasaki, Derbi, Gilera — including Yamaha YZ85 2002–2023; Yamaha YZ85 R2 2024; Yamaha YZ85 S2 2025; Yamaha YZ85 T2 2026; Yamaha YZ85 P LW 2023; Yamaha YZ85 R LW 2024; Yamaha YZ85 S LW 2025; Yamaha YZ85 T LW 2026. Verify fit for your exact bike with the fitment checker at garamoto.com.

Specifications

Sprocket PositionFront
MaterialC45 high carbon steel and SCM415 chromoly steel alloy
Surface TreatmentHeat-treated and beadblasted
Best ForOff-road / Trail, Street

Verified from Garamoto’s catalog & fitment data.

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