JT Sprockets
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JT Sprockets 525 Steel Rear Sprocket, 42T (JTR15.42)

Part # JTR15.42
Item #210038
Fits 26 motorcycles
  • Benelli
    • 1130 TRE K · 2015–2017
    • 1130 Café Race · 2006–2008
    • 1130 Tornado Naked TRE R · 2007–2009
    • 1130 Tornado Naked TRE R · 2016
    • 1130 TRE K · 2011–2012
    • TRE899 K · 2016
    • 900 Tornado TRE · 2002–2003
    • 900 Tornado TRE RS · 2004–2008
    • 900 Tornado Naked TRE · 2016
    • 1000 Tornado RS · 2004–2005
    • 1130 Century Racer · 2011
    • 1130 TNT / R160 · 2004–2011
    • 500 Leoncino · 2017–2018
    • TRK502 · 2017–2022
    • 500 Leoncino Euro 4 · 2018–2020
    • BN302 · 2015–2021
    • 500 Leoncino 502X · 2018–2021
    • 502C Cruiser · 2019–2021
    • 752 S · 2018–2023
    • 400 Imperiale · 2018–2021
    • BN600i · 2016–2017
    • BN600 GT · 2016–2017
    • BN600 R · 2014–2017
    • 800 Leoncino Euro 5 · 2022–2023
  • Harley Davidson
    • X350 RA · 2023–2026
    • X500 · 2024–2026
$36.99
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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
JT Sprockets Steel Rear Sprocket — JTR15.42 (42T)
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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