JT Sprockets 428 Steel Rear Sprocket (JTR1842)

Name: JT Sprockets 428 Steel Rear Sprocket (JTR1842)
Brand: JT Sprockets
SKU: 206723
Price: 21.99 USD
Availability: InStock

Part # JTR1842.42

Item #206723

Fits 29 motorcycles

Yamaha
- DT125 E · 1974
- DT125 E · 1977
- DT175 · 1974–1981
- YZ80 K · 1983
- YZ80 · 1981–1982
- YZ80 H/J · 1981–1982
- DT125 F · 1975–1976
- DT125 · 1974–1976
- DT125 · 1978–1980
- AG200
- AG200 · 1984–1994
- TW200
- TW200 · 1987–2025
- XT200
- XT200
- XT200 · 1982–1983
- TW225 E · 2002–2007
- MX175 · 1974–1975
- MX175 · 1977–1981
- XT125
- XT125 · 1982–1987
- XT125 · 1991–1993
- TW125 · 1999–2004
- TW200 T2 · 2026
- YZ80 G · 1980
- TY175
- TY125 · 1989
- XT250 T
- XT350 · 1985–2000

$21.99

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JT Sprockets 428 Steel Rear Sprocket (JTR1842)

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: 42 · part_number: JTR1842.42

Fitment

Fits 29 motorcycles across Yamaha — including Yamaha DT125 E 1974; Yamaha DT125 E 1977; Yamaha DT175 1974–1981; Yamaha YZ80 K 1983; Yamaha YZ80 1981–1982; Yamaha YZ80 H/J 1981–1982; Yamaha DT125 F 1975–1976; Yamaha DT125 1974–1976. Verify fit for your exact bike with the fitment checker at garamoto.com.

Specifications

Sprocket Position	Rear
Material	C49 high carbon steel
Surface Treatment	Heat-treated and beadblasted
Best For	Off-road / Trail, Street

Verified from Garamoto’s catalog & fitment data.