JT Sprockets
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JT Sprockets 428 Steel Rear Sprocket, 45T (JTR1842.45)

Part # JTR1842.45
Item #206725
Fits 36 motorcycles
  • Yamaha
    • DT125 E · 1974
    • DT175 · 1974–1977
    • YZ80 K · 1983
    • YZ80 H,J · 1981–1982
    • YZ80 H/J · 1981–1982
    • DT125 F · 1975–1976
    • DT125 A,B,C · 1974–1976
    • DT175 A,B,C · 1974–1976
    • AG200
    • TW200
    • TW200 · 1991–2017
    • XT200
    • TW225 E · 2002–2007
    • MX175 A,B · 1974–1975
    • XT200 J,K,CK · 1982–1983
    • XT200 J,K
    • MX175 F,G,H · 1977–1981
    • DT125 E · 1977
    • DT125 F,G,H · 1978–1980
    • XT125 · 1982–1987
    • DT175 E,F,G,H · 1977–1981
    • TW125 · 1999–2002
    • XT125
    • XT125 · 1991–1993
    • TW200 T,U,W,A,B,D,E,F · 1987–1994
    • TW200 G,H,K,L,M,N,P,R,S,T,V,W,X,Y,Z,A,B1,D1,E1,F1,G1,H1,J1,K1,L1 · 1995–2021
    • TW200 N1,P1,R1,S1 · 2022–2025
    • TW200 T2 · 2026
    • YZ80 G · 1980
    • TY175
    • TW125 · 2003–2004
    • TY125 · 1989
    • XT250 T
    • XT350 N,S,T,U,W,A,B,D,E,F,G,H,J,K,L,M · 1985–2000
    • AG200 L,FU,FB,W,F · 1984–1994
    • XT350 C N,S,T,U,W,A,B,D,E,F,G,H,J,K,L,M · 1985–2000
$36.99
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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
JT Sprockets Steel Rear Sprocket — JTR1842.45 (45T)
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.
  • Available in zinc-black (zbk) and self-cleaning (SC) variants on select tooth counts.
  • Built by JT Sprockets — the world's largest sprocket manufacturer, with sprocket production for major OE bike brands.
  • Sized for 520 pitch across stock and shorter/taller gearing options.

Spec: type: rear_sprocket · teeth: 45 · part_number: JTR1842.45

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