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JT Sprockets 525 Steel Rear Sprocket, 40T (JTR1317.40)

Part # JTR1317.40
Item #210034
Fits 14 motorcycles
  • Honda
    • CBR1000 RR-R Fireblade ABS · 2020–2021
    • CBR1000 RR-R Fireblade SP ABS · 2020–2021
    • NT1100 · 2022–2025
    • NT1100 DCT · 2022–2025
    • CBR1000 RR-R Fireblade ABS · 2022–2025
    • CBR1000 RR-S Fireblade ABS · 2025
    • CBR1000 RR-R Fireblade SP ABS · 2022–2024
    • CBR1000 RR SP Brembo · 2024
    • CBR1000 RR SP Carbon Ed · 2024
    • CBR1000 RR2 Fireblade (USA) · 2026
    • CBR1000 RA-H,J,K Fireblade · 2017–2019
    • CBR1000 RA2 Fireblade (USA) · 2026
    • CBR1000 RR-H,J,K S1 Fireblade SP1 ABS · 2017–2019
    • CBR1000 RR-H,J,K S2 Fireblade SP2 ABS · 2017–2019
$36.99
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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
JT Sprockets Steel Rear Sprocket — JTR1317.40 (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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