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JT Sprockets 420 Steel Rear Sprocket (JTR834)

Part # JTR834.35
Item #JT83435
Fits 35 motorcycles
  • Yamaha
    • LB80 Chappy
    • LB50 Chappy
    • LB80 · 1976–1978
    • BW80 · 1986–1988
    • BW80 A · 1990
    • PW80 · 1983–1985
    • PW80 · 1991–2006
    • LB50 2M Chappy · 1986–1994
    • TT-R90 · 2000–2004
    • TT-R90 E · 2004–2007
    • TT-R110 E · 2008–2025
    • V70 · 1976
    • V75 · 1977
    • V90 · 1975–1978
    • YB100 E · 1980–1994
    • TT-R50 · 2006–2026
    • YB100 · 1976–1980
    • FS1 E · 1971–1976
    • V50
    • RX80 SE · 1982
    • V80
    • RS100 · 1975–1982
    • RD80
    • FS80 SE
    • RD80 MX · 1981–1985
    • RSX100 (RXS100)
    • DT100 · 1977–1983
    • MX100 · 1979–1983
    • RT100 · 1990–2000
    • RD50 M Alloy Wheel · 1979–1980
    • RD50 MX · 1979–1987
    • RZ50
    • RD80 LC 1 · 1982
    • RX80 SE Chopper
    • LB50 3M Bop
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JT Sprockets 420 Steel Rear Sprocket (JTR834)
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.

Fitment

Fits 35 motorcycles across Yamaha — including Yamaha LB80 Chappy; Yamaha LB50 Chappy; Yamaha LB80 1976–1978; Yamaha BW80 1986–1988; Yamaha BW80 A 1990; Yamaha PW80 1983–1985; Yamaha PW80 1991–2006; Yamaha LB50 2M Chappy 1986–1994. Verify fit for your exact bike with the fitment checker at garamoto.com.

Specifications

Sprocket PositionRear
MaterialC45 high carbon steel
Surface TreatmentHeat-treated and beadblasted
Best ForOff-road / Trail, Street

Verified from Garamoto’s catalog & fitment data.

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