• -25.35%
Couronne RFX Pro Series Elite aluminium - 520
Couronne RFX Pro Series Elite aluminium - 520

RFX blue aluminium rear sprocket 520 50 teeth

RFX
FXRS 80-50 99BU
Last items in stock
€38.82 €52.00 -25.35%
Tax included

This RFX blue aluminium rear sprocket, with 520 chain pitch and 50 teeth, is designed to deliver reliable, lightweight and efficient motorcycle transmission performance.

  • Lightweight and durable aluminium sprocket
  • 520 chain pitch
  • 50-tooth configuration
  • Blue racing-style finish
  • Product available in stock

 

Product presentation

The RFX blue 520 rear sprocket with 50 teeth is a transmission component designed for replacement or maintenance of your motorcycle final drive. Made from aluminium, it offers an excellent balance between light weight, performance and durability for off-road or racing use depending on the intended fitment.

Benefits

  • Aluminium construction helps reduce transmission weight
  • 520 chain pitch for matching transmission setups
  • 50-tooth setup to adjust the motorcycle's final drive behaviour
  • Blue finish for a clean racing look
  • Standard version ideal for a reliable replacement

Technical details

  • Brand: RFX
  • RAW reference: FXRS 80-50 99BU
  • Supplier reference: 1123246003
  • EAN13: 5060468929201
  • OEM reference: 70103.
  • Type: Rear sprocket
  • Version: Standard
  • Material: Aluminium
  • Colour: Blue
  • Chain pitch: 520
  • Number of teeth: 50 teeth
  • Availability: In stock

Advice before ordering

Before ordering, please check the chain pitch, number of teeth, mounting pattern and OEM reference of your original rear sprocket. The provided model identifiers are not enough to display a precise commercial motorcycle compatibility without an additional check.

This product fit the following bike:


2026
TM RACING 2T 85 MX SENIOR
TM RACING 2T 125 Fi EN ES
TM RACING 2T 125 MX ES
TM RACING 2T 125 Fi ES SMR Euro 5+
TM RACING 2T 125 EN ES
TM RACING 2T 125 Fi SMR e4/e5
TM RACING 2T 144 EN
TM RACING 2T 144 MX
TM RACING 4T 250 Fi MX
TM RACING 2T 250 EN
TM RACING 4T 250 Fi EN
TM RACING 2T 250 MX
TM RACING 4T 250 Fi SMK
TM RACING 2T 250 FI EN
TM RACING 2T 250 FI MX
TM RACING 2T 300 FI EN
TM RACING 4T 300 Fi EN
TM RACING 2T 300 FI SMR
TM RACING 2T 300 MX
TM RACING 2T 300 EN
TM RACING 4T 300 Fi MX
TM RACING 2T 300 FI MX
TM RACING 2T 300 SMX
TM RACING 4T 450 Fi SMK
TM RACING 4T 450 Fi SMR
TM RACING 4T 450 Fi MX
TM RACING 4T 450 Fi EN

2025
TM RACING 2T 85 MX SENIOR
TM RACING 2T 125 Fi SMR e4/e5
TM RACING 2T 125 FI EN ES
TM RACING 2T 125 MX ES
TM RACING 2T 125 Fi ES SMR Euro 5+
TM RACING 2T 125 Fi MX ES
TM RACING 2T 144 MX
TM RACING 2T 144 EN
TM RACING 2T 144 FI EN
TM RACING 2T 250 EN
TM RACING 4T 250 Fi EN
TM RACING 2T 250 MX
TM RACING 4T 250 Fi SMK
TM RACING 2T 250 FI EN
TM RACING 2T 250 Fi MX
TM RACING 4T 250 Fi MX
TM RACING 2T 300 MX
TM RACING 2T 300 EN
TM RACING 4T 300 Fi MX
TM RACING 2T 300 Fi MX
TM RACING 2T 300 SMX
TM RACING 2T 300 FI EN
TM RACING 4T 300 Fi EN
TM RACING 2T 300 FI SMR
TM RACING 4T 450 Fi SMK
TM RACING 4T 450 Fi SMR
TM RACING 4T 450 Fi MX
TM RACING 4T 450 Fi EN

2024
TM RACING 2T 85 MX SENIOR
TM RACING 2T 100 MX SENIOR
TM RACING 2T 125 Fi SMR
TM RACING 2T 125 MX
TM RACING 2T 125 FI EN
TM RACING 2T 144 FI EN
TM RACING 2T 144 MX
TM RACING 2T 144 EN
TM RACING 4T 250 Fi EN
TM RACING 2T 250 EN
TM RACING 4T 250 Fi SMK
TM RACING 2T 250 FI EN
TM RACING 4T 250 Fi MX
TM RACING 2T 250 MX
TM RACING 2T 300 EN
TM RACING 2T 300 MX
TM RACING 2T 300 FI EN
TM RACING 4T 300 Fi MX
TM RACING 2T 300 FI SMR
TM RACING 2T 300 SMX
TM RACING 4T 300 Fi EN
TM RACING 4T 450 Fi SMK
TM RACING 4T 450 Fi SMR
TM RACING 4T 450 Fi MX
TM RACING 4T 450 Fi EN

2023
TM RACING 2T 125 Fi SMR
TM RACING 2T 125 MX
TM RACING 2T 125 FI EN
TM RACING 2T 144 FI EN
TM RACING 2T 144 MX
TM RACING 2T 144 EN
TM RACING 4T 250 Fi MX
TM RACING 2T 250 EN
TM RACING 4T 250 Fi EN
TM RACING 2T 250 FI EN
TM RACING 4T 250 Fi SMK
TM RACING 2T 250 MX
TM RACING 2T 300 FI SMR
TM RACING 4T 300 Fi EN
TM RACING 2T 300 FI EN
TM RACING 2T 300 MX
TM RACING 4T 300 Fi MX
TM RACING 2T 300 EN
TM RACING 4T 450 Fi MX
TM RACING 4T 450 Fi SMK
TM RACING 4T 450 Fi EN
TM RACING 4T 450 Fi SMR
TM RACING 4T 530 Fi SMR
TM RACING 4T 530 Fi EN

2022
TM RACING 2T 125 FI EN
TM RACING 2T 125 Fi SMR
TM RACING 2T 125 MX
TM RACING 2T 144 EN
TM RACING 2T 144 FI EN
TM RACING 2T 144 MX
TM RACING 4T 250 Fi MX
TM RACING 2T 250 FI EN
TM RACING 2T 250 EN
TM RACING 4T 250 Fi EN
TM RACING 4T 250 Fi SMX
TM RACING 2T 250 MX
TM RACING 2T 300 FI SMR
TM RACING 4T 300 Fi EN
TM RACING 2T 300 FI EN
TM RACING 2T 300 MX
TM RACING 4T 300 Fi MX
TM RACING 2T 300 EN
TM RACING 4T 450 Fi SMK
TM RACING 4T 450 Fi EN
TM RACING 4T 450 Fi SMR
TM RACING 4T 450 Fi MX
TM RACING 4T 530 Fi SMR
TM RACING 4T 530 Fi EN

2021
TM RACING 2T 85 MX SENIOR
TM RACING 2T 125 MX
TM RACING 2T 125 EN
TM RACING 2T 125 Fi SMR
TM RACING 2T 125 Fi EN
TM RACING 2T 144 Fi EN
TM RACING 2T 144 EN
TM RACING 2T 144 MX
TM RACING 2T 250 EN
TM RACING 4T 250 Fi SMX
TM RACING 2T 250 MX
TM RACING 4T 250 Fi MX TWIN
TM RACING 2T 250 Fi EN
TM RACING 2T 300 Fi SMR
TM RACING 2T 300 SMX
TM RACING 4T 300 Fi MX TWIN
TM RACING 2T 300 Fi EN
TM RACING 2T 300 MX
TM RACING 4T 300 Fi EN TWIN
TM RACING 2T 300 EN
TM RACING 4T 450Fi EN
TM RACING 4T 450 Fi MX
TM RACING 4T 450 Fi SMX
TM RACING 4T 450 Fi FT
TM RACING 4T 450 Fi SMK
TM RACING 4T 530Fi SMR
TM RACING 4T 530Fi EN

2020
TM RACING 2T 125 MX
TM RACING 2T 125 Fi SMR
TM RACING 2T 125 Fi EN
TM RACING 2T 125 SMR
TM RACING 2T 125 EN
TM RACING 2T 144 MX
TM RACING 2T 144 EN
TM RACING 2T 250 MX
TM RACING 4T 250 Fi EN TWIN
TM RACING 2T 250 FI EN
TM RACING 4T 250 Fi SMX
TM RACING 2T 250 EN
TM RACING 4T 250 Fi MX TWIN
TM RACING 4T 300Fi EN TWIN
TM RACING 2T 300 FI EN
TM RACING 2T 300 MX
TM RACING 2T 300 EN
TM RACING 4T 300 FI MX TWIN
TM RACING 2T 300 FI SMR
TM RACING 2T 300 SMX
TM RACING 4T 450 Fi SMX
TM RACING 4T 450 Fi EN
TM RACING 4T 450 Fi MX
TM RACING 4T 450 FI SMK
TM RACING 4T 450Fi FT
TM RACING 4T 450 Fi SMR
TM RACING 4T 530 Fi SMR
TM RACING 4T 530 Fi EN

2019
TM RACING 2T 125 MX
TM RACING 2T 125 EN
TM RACING 2T 125 SMR
TM RACING 2T 144 EN
TM RACING 2T 144 MX
TM RACING 4T 250 Fi SMX
TM RACING 2T 250Fi ES EN
TM RACING 4T 250 Fi EN TWIN
TM RACING 4T 250 Fi MX TWIN
TM RACING 2T 250 ES EN
TM RACING 2T 250 ES MX
TM RACING 4T 250 Fi EN
TM RACING 4T 300Fi MX
TM RACING 2T 300Fi ES EN
TM RACING 4T 300Fi EN
TM RACING 2T 300 ES MX
TM RACING 4T 450 Fi FT
TM RACING 4T 450 Fi SMX
TM RACING 4T 450 Fi EN
TM RACING 4T 450 Fi MX
TM RACING 4T 450 Fi SMX v.2
TM RACING 4T 530 Fi MX
TM RACING 4T 530 Fi EN
TM RACING 4T 530 Fi SMX

2018
TM RACING 2T 125 EN
TM RACING 2T 125 MX
TM RACING 2T 144 EN
TM RACING 2T 144 MX
TM RACING 2T 250 MX
TM RACING 4T 250 Fi MX TWIN
TM RACING 2T 250 EN
TM RACING 4T 250 Fi EN
TM RACING 4T 250 Fi SMX
TM RACING 2T 300 MX
TM RACING 4T 300Fi EN
TM RACING 2T 300 EN
TM RACING 4T 300Fi MX
TM RACING 4T 450 Fi FT
TM RACING 4T 450 Fi SMX
TM RACING 4T 450 Fi EN
TM RACING 4T 450 Fi MX
TM RACING 4T 530 Fi MX
TM RACING 4T 530 Fi EN

2017
TM RACING 2T 125 MX
TM RACING 2T 125 EN
TM RACING 2T 144 EN
TM RACING 2T 250 MX
TM RACING 4T 250 Fi MX
TM RACING 2T 250 EN
TM RACING 4T 250 Fi EN
TM RACING 2T 300 MX
TM RACING 4T 300Fi MX
TM RACING 2T 300 EN
TM RACING 4T 300Fi EN
TM RACING 4T 450 Fi EN
TM RACING 4T 450 Fi MX
TM RACING 4T 450 Fi FT
TM RACING 4T 450 Fi SMX
TM RACING 4T 530 Fi EN
TM RACING 4T 530 Fi MX

2016
TM RACING 2T 125 MX
TM RACING 2T 125 EN
TM RACING 2T 144 EN
TM RACING 2T 250 EN
TM RACING 4T 250 Fi MX
TM RACING 2T 250 MX
TM RACING 4T 250 Fi EN
TM RACING 2T 300 EN
TM RACING 4T 450 Fi SMX
TM RACING 4T 450 Fi MX
TM RACING 4T 450 Fi EN
TM RACING 4T 530 Fi MX
TM RACING 4T 530 Fi EN

2015
TM RACING 2T 125 MX
TM RACING 2T 125 EN
TM RACING 2T 144 MX
TM RACING 2T 144 EN
TM RACING 2T 250 EN
TM RACING 4T 250 Fi EN
TM RACING 2T 250 MX
TM RACING 4T 250 Fi MX
TM RACING 2T 300 EN
TM RACING 2T 300 MX
TM RACING 4T 450 Fi EN
TM RACING 4T 450 Fi SMX
TM RACING 4T 450 Fi MX
TM RACING 4T 530 Fi EN
TM RACING 4T 530 Fi MX

2014
TM RACING 2T 125 EN
TM RACING 2T 125 MX
TM RACING 2T 144 EN
TM RACING 2T 144 MX
TM RACING 2T 250 MX
TM RACING 2T 250 EN
TM RACING 2T 300 MX
TM RACING 2T 300 EN

2013
TM RACING 2T 125 MX
TM RACING 2T 125 EN
TM RACING 2T 144 MX
TM RACING 2T 144 EN
TM RACING 2T 250 MX
TM RACING 2T 250 EN
TM RACING 2T 300 EN
TM RACING 2T 300 MX

2012
TM RACING 2T 125 EN
TM RACING 2T 125 MX
TM RACING 2T 144 EN
TM RACING 2T 250 MX
TM RACING 2T 250 EN
TM RACING 2T 300 EN
TM RACING 2T 300 MX

2011
TM RACING 2T 125 EN
TM RACING 2T 125 MX
TM RACING 2T 144 EN
TM RACING 2T 144 MX
TM RACING 2T 250 EN
TM RACING 2T 250 MX
TM RACING 2T 300 MX

2010
TM RACING 2T 125 EN
TM RACING 2T 125 MX
TM RACING 2T 144 EN
TM RACING 2T 144 MX
TM RACING 2T 250 EN
TM RACING 2T 250 MX
TM RACING 2T 300 MX
TM RACING 2T 300 EN

2009
TM RACING 2T 125 MX
TM RACING 2T 125 EN
TM RACING 2T 144 MX
TM RACING 2T 144 EN
TM RACING 2T 250 MX
TM RACING 2T 250 EN
TM RACING 2T 300 MX
TM RACING 2T 300 EN

2008
TM RACING 2T 125 EN
TM RACING 2T 125 MX
TM RACING 2T 144 EN
TM RACING 2T 144 MX
TM RACING 2T 250 EN
TM RACING 2T 250 MX
TM RACING 2T 300 MX
TM RACING 2T 300 EN
TM RACING 4T 450 MX

2007
TM RACING 80 2 Temps MX/EN
TM RACING 85 2 Temps MX/EN
TM RACING 125 2 Temps MX/EN
TM RACING 250 2 Temps MX/EN
TM RACING 250 4 Temps MX/EN
TM RACING 300 2 Temps MX/EN
TM RACING 450 4 Temps MX/EN
TM RACING 530 4 Temps MX/EN
TM RACING 660 4 Temps MX/EN

2006
TM RACING 80 2 Temps MX/EN
TM RACING 85 2 Temps MX/EN
TM RACING 100 2 Temps MX/EN
TM RACING 125 2 Temps MX/EN
TM RACING 250 2 Temps MX/EN
TM RACING 250 4 Temps MX/EN
TM RACING 300 2 Temps MX/EN
TM RACING 450 4 Temps MX/EN
TM RACING 530 4 Temps MX/EN
TM RACING 660 4 Temps MX/EN

2005
TM RACING 80 2 Temps MX/EN
TM RACING 85 2 Temps MX/EN
TM RACING 100 2 Temps MX/EN
TM RACING 125 2 Temps MX/EN
TM RACING 250 4 Temps MX/EN
TM RACING 250 2 Temps MX/EN
TM RACING 300 2 Temps MX/EN
TM RACING 450 4 Temps MX/EN
TM RACING 530 4 Temps MX/EN
TM RACING 660 4 Temps MX/EN

2004
TM RACING 80 2 Temps MX/EN
TM RACING 85 2 Temps MX/EN
TM RACING 100 2 Temps MX/EN
TM RACING 125 2 Temps MX/EN
TM RACING 250 2 Temps MX/EN
TM RACING 250 4 Temps MX/EN
TM RACING 300 2 Temps MX/EN
TM RACING 450 4 Temps MX/EN
TM RACING 530 4 Temps MX/EN
TM RACING 660 4 Temps MX/EN

2003
TM RACING 80 2 Temps MX/EN
TM RACING 85 2 Temps MX/EN
TM RACING 100 2 Temps MX/EN
TM RACING 125 2 Temps MX/EN
TM RACING 250 4 Temps MX/EN
TM RACING 250 2 Temps MX/EN
TM RACING 300 2 Temps MX/EN
TM RACING 400 4 Temps MX/EN
TM RACING 450 4 Temps MX/EN
TM RACING 530 4 Temps MX/EN
TM RACING 600 4 Temps MX/EN

2002
TM RACING 80 2 Temps MX/EN
TM RACING 85 2 Temps MX/EN
TM RACING 100 2 Temps MX/EN
TM RACING 125 2 Temps MX/EN
TM RACING 250 2 Temps MX/EN
TM RACING 300 2 Temps MX/EN

2001
TM RACING 80 2 Temps MX/EN
TM RACING 85 2 Temps MX/EN
TM RACING 100 2 Temps MX/EN
TM RACING 125 2 Temps MX/EN
TM RACING 250 2 Temps MX/EN
TM RACING 300 2 Temps MX/EN

2000
TM RACING 80 2 Temps MX/EN
TM RACING 85 2 Temps MX/EN
TM RACING 100 2 Temps MX/EN
TM RACING 125 2 Temps MX/EN
TM RACING 250 2 Temps MX/EN
TM RACING 300 2 Temps MX/EN

1999
TM RACING 80 2 Temps MX/EN
TM RACING 85 2 Temps MX/EN
TM RACING 100 2 Temps MX/EN
TM RACING 125 2 Temps MX/EN
TM RACING 250 2 Temps MX/EN
TM RACING 300 2 Temps MX/EN

1998
TM RACING 80 2 Temps MX/EN
TM RACING 85 2 Temps MX/EN
TM RACING 100 2 Temps MX/EN
TM RACING 125 2 Temps MX/EN
TM RACING 250 2 Temps MX/EN

1997
TM RACING 80 2 Temps MX/EN
TM RACING 85 2 Temps MX/EN
TM RACING 100 2 Temps MX/EN
TM RACING 125 2 Temps MX/EN
TM RACING 250 2 Temps MX/EN

1996
TM RACING 80 2 Temps MX/EN
TM RACING 85 2 Temps MX/EN
TM RACING 100 2 Temps MX/EN
TM RACING 125 2 Temps MX/EN
TM RACING 250 2 Temps MX/EN


1 Item

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