JT Sprockets
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JT Sprockets 630 Steel Front Sprocket, 15T (JTF521.15)

Part # JTF521.15
Item #206443
Fits 15 motorcycles
  • Kawasaki
    • KZ900 A · 1976
    • KZ900 A4,A5 · 1976–1977
    • Z900 A4 · 1976
    • KZ1000 A1/A2/A2A · 1977–1978
    • KZ1000 A3/A3A/A4 · 1979–1980
    • KZ1000 B1/B2/B3/B4 (LTD) · 1977–1981
    • KZ1000 C1/C2 Police · 1978–1979
    • KZ1000 C3/C4 Police · 1980–1981
    • KZ1000 D1 (Z1-R Series) · 1978
    • KZ1000 D3 (Z1-R Series) · 1980
    • KZ1000 G1 Classic · 1980
    • Z1000 A1 · 1977–1978
    • Z1000 A4 · 1977–1978
    • Z1000 H1
    • Z1000 D1 (Z1R) · 1978–1980
$15.99
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  • Backordered, shipping soon
  • Free U.S. shipping on orders $150+ ($15 flat under)
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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
JT Sprockets Steel Front Sprocket — JTF521.15 (15T)
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.

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