JT Sprockets
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JT Sprockets 520 Steel Front Sprocket (JTF1554)

Part # JTF1554.13
Item #JT155413
Fits 15 motorcycles
  • Yamaha
    • TT-R230 · 2005–2023
    • TT-R230 R · 2024
    • TT-R230 S · 2025
    • TT-R230 T1 · 2026
    • DT200 L · 1985
  • Hyosung
    • GT250 R Sport · 2004–2008
    • GT250 Comet · 2006–2009
    • GT250 Comet FI · 2010
    • GT250 i Naked EFI · 2011–2015
    • GT250 R Comet · 2009
    • GT250 R Comet FI · 2010
    • GT250 R EFI · 2011–2015
    • GV250 Aquila · 2004–2009
    • GV250 Aquila FI Classic · 2010–2015
    • GV250 EFI · 2011–2012
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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
JT Sprockets 520 Steel Front Sprocket (JTF1554)
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

Yamaha: TT-R230 2005–2023 · TT-R230 R 2024 · TT-R230 S 2025 · TT-R230 T1 2026 · DT200 L 1985

Hyosung: GT250 R Sport 2004–2008 · GT250 Comet 2006–2009 · GT250 Comet FI 2010 · GT250 i Naked EFI 2011–2015 · GT250 R Comet 2009 · GT250 R Comet FI 2010 · GT250 R EFI 2011–2015 · GV250 Aquila 2004–2009 · GV250 Aquila FI Classic 2010–2015 · GV250 EFI 2011–2012

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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