JT Sprockets
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JT Sprockets 520 Steel Rear Sprocket, 40T (JTR5.40)

Part # JTR5.40
Item #987884
Fits 36 motorcycles
  • Aprilia
    • 125 ETX · 1984
    • 125 ETX Tuareg · 1985
    • 125 ETX Tuareg · 1986–1987
    • 600 Tuareg SPX Paris Dakar · 1988–1990
    • 600 Tuareg Wind · 1990–1992
    • 600 Pegaso · 1990
    • 600 Pegaso · 1992–1993
    • 650 Pegaso Trail · 2007–2009
    • 125 MX · 2004
    • 350 ETX Tuareg Wind · 1988–1990
    • 650 Pegaso Tucsany Tibet · 2004
    • 650 Pegaso · 1992–1997
    • 650 Pegaso · 1998–1999
    • 650 Pegaso Cube · 2000
    • 650 Pegaso i.e. · 2001–2004
    • Moto 6.5 · 1995–1999
    • 650 Stark · 1995–1998
  • BMW
    • G310 GS · 2016–2020
    • G310 GS · 2021–2026
    • G310 R · 2016–2020
    • G310 R · 2021–2026
    • F650 · 1994–1995
    • F650 Funduro · 1996–2000
    • F650 ST Strada · 1998–2000
    • F650 Dakar · 1999–2000
    • F650 GS Dakar · 2001–2005
    • F650 GS · 1999–2007
    • G650 GS · 2011–2015
    • G650 GS Sertao · 2012–2013
  • Betamotor
    • 350 Jonathan · 2001–2002
    • 350 Jonathan · 2003–2010
  • Gilera
    • 500 Saturno · 1990–1993
    • 600 XR/T · 1988–1989
    • 125 R1/R1/S · 1988–1989
  • Husqvarna
    • 650 TR Terra · 2013–2014
    • 650 TR Strada · 2013–2014
$36.99
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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
JT Sprockets Steel Rear Sprocket — JTR5.40 (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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