JT Sprockets
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JT Sprockets 520 Steel Rear Sprocket, 40T (JTR301.40)

Part # JTR301.40
Item #982433
Fits 15 motorcycles
  • Honda
    • CRF250 M-D,E,F · 2013–2015
    • CRF250 L/LA-D,E,F,G,H,J,K,M · 2013–2021
    • CRF250 L Rally · 2020
    • CRF250 L Rally ABS · 2020
    • CRF250 RL/RLA-H,J · 2017–2018
    • CRF250 Rally · 2017
    • CRM250 RK,RM
    • XR250 RL,RM,RN,RP,RR,RS · 1990–1995
    • XR600 RP,RR · 1993–1994
    • CRM250 M,M2,N,P,R,S · 1991–1995
    • XR650 L-P,R,S,T,V,W,X,Y,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,G,H · 1993–2017
    • XR650 L-J,K,L · 2018–2020
    • XR650 L-M · 2021
    • XR650 L2-N,P,R,S · 2022–2025
    • XR600 RM,RN,RP,RR,RS,RT,RV,RW,RX,RY · 1991–2000
$36.99
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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
JT Sprockets Steel Rear Sprocket — JTR301.40 (40T)
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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