JT Sprockets
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JT Sprockets 420 Steel Rear Sprocket, 37T (JTR834.37)

Part # JTR834.37
Item #982857
Fits 43 motorcycles
  • Yamaha
    • LB80 Chappy
    • LB50 Chappy
    • LB80 II AD,AE · 1977–1978
    • BW80 S,T,U · 1986–1988
    • BW80 A · 1990
    • PW80 K,N Y-Zinger · 1983–1985
    • PW80 B,D,E,F,G,H,J,K,L,M,N,P,R,S Y-Zinger · 1991–2004
    • PW80 T,V · 2005–2006
    • LB50 2M Chappy · 1986–1994
    • TT-R90 · 2000–2004
    • TT-R90 E · 2004–2007
    • TT-R110 E · 2008–2025
    • V70 · 1976
    • V75 · 1977
    • LB80 · 1976–1977
    • V90 · 1975–1978
    • YB100 E · 1980–1994
    • TT-R50 E-V,W,X,Y,Z,A,B,D,E,F,G,H,J,K,L,M · 2006–2021
    • TT-R50 E-N,P,R,S,T · 2022–2026
    • YB100 · 1976–1978
    • YB100 · 1979–1980
    • FS1 E · 1971–1976
    • V50 M,P
    • RX80 SE · 1982
    • V80
    • RS100 · 1975–1979
    • RD80
    • FS80 SE
    • RD80 MX · 1982–1985
    • RD80 MX · 1981–1982
    • RSX100 (RXS100)
    • RS100 · 1980–1982
    • DT100 D,E,F,G,H,J,K · 1977–1983
    • MX100 F,G,H,J,K · 1979–1983
    • RT100 A,D,E,F,G,H,J,K,L,M · 1990–2000
    • RD50 M Alloy Wheel · 1979–1980
    • RD50 MX · 1979–1980
    • RD50 MX · 1981–1987
    • RZ50
    • RD80 LC 1 · 1982
    • RX80 SE Chopper
    • DT100 SD,E,F,G,H,J,MX · 1977–1983
    • LB50 3M Bop
$14.99
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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
JT Sprockets Steel Rear Sprocket — JTR834.37 (37T)
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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