JT Sprockets 420 Steel Rear Sprocket (JTR832)

Name: JT Sprockets 420 Steel Rear Sprocket (JTR832)
Brand: JT Sprockets
SKU: 207234
Price: 13.99 USD
Availability: InStock

Part # JTR832.39

Item #207234

Fits 34 motorcycles

Yamaha
- LB50 Chappy
- LB50 · 1978–1982
- DT50 MX Auto
- DT50 MX Auto · 1986–1988
- DTR50 (DT50R)
- DTR50 (DT50R) · 1988–1996
- FS1
- FS1 DX
- FS1 DX · 1978
- FS1 E DX
- FS1 EA
- FS1 SE
- GT MX D,E,F · 1977–1979
- MX80 · 1980–1982
- TY80
- DT80 M
- DT80 MX · 1983
- DT80 · 1977–1983
- GT80 · 1973–1982
- DT50 M End. · 1978–1982
- RD50 MX Auto
- YSR50 · 1986–1992
- DT50 M · 1978–1980
- TY50 M · 1978–1981
- RX50 · 1983–1984
- YZ80 · 1974–1977
- DT50
- DT50 · 1983–1995
- DT50 MX · 1981–1987
- RD50 · 1977–1978
- RD50 M Spoke Wheel · 1978
- DT50 R · 1997–1998
- DT50 R X-Limit
MBK
- 50 X-Limit SM · 1997–1998

$13.99

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Choose Your Teeth

39T

41T

44T

46T

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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov

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JT Sprockets 420 Steel Rear Sprocket (JTR832)

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: 39 · part_number: JTR832.39

Fitment

Fits 34 motorcycles across Yamaha, MBK — including Yamaha LB50 Chappy; Yamaha LB50 1978–1982; Yamaha DT50 MX Auto; Yamaha DT50 MX Auto 1986–1988; Yamaha DTR50 (DT50R); Yamaha DTR50 (DT50R) 1988–1996; Yamaha FS1; Yamaha FS1 DX. 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.