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Sprocket RFX Pro Series Elite Aluminium Rear Sprocket - 520

BLACK WEEK

RFX Pro Series Elite Aluminium Rear Sprocket - 520 Sprocket

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BLACK WEEK

RFX Pro Series Elite Aluminium Rear Sprocket - 520 SprocketRef : RFX01024A / 1123221007

Recommended retail price:50,00 €?

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42,50 ^€

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Description
Compatible motorbikes
Questions and answers

DescriptionRFX Pro Series Elite Aluminium Rear Sprocket - 520 Sprocket

Product details :

Features

RFX Pro Series Elite Aluminum Sprocket - 520 (Manufacturer part number: FXRS 20-50 99BK): a sprocket designed for competition and motocross outings where mud and rough terrain are part of the daily routine. Machined from 7075 aluminum, it combines lightweight construction with mechanical strength to reduce unsprung mass without sacrificing reliability.

CNC machining in 7075 aluminum for precise geometry.
50 teeth — 520 chain pitch.
Mud evacuation grooves to limit accumulation and premature wear.
Laser-engraved RFX logo and black anodized finish.
CAD-designed profile and tight tolerances for precise chain engagement.
Stiff design aimed at improving torsional resistance in demanding conditions.
Color coding specific to models or available in standard silver.

Whether you are preparing a KX for racing or looking for a robust replacement part for your off-road training, this RFX Pro Series sprocket offers a lightweight and refined alternative. Check compatibility with your motorcycle (reference 520) before installation to ensure proper alignment with your sprocket and chain.

Technical information :

Reference

RFX01024A / 1123221007

No transmission chain

520

Number of teeth (crown)

Type of crown

Standard

Number of teeth

50 teeth

Material

Aluminum

Color

Black

Compatible motorbikes

KAWASAKI51 compatible models

KX 125 (KX125B) - 1982/1983KX 125 (KX125D) - 1985/1985KX 125 (KX125E) - 1986/1987KX 125 (KX125F) - 1988/1988KX 125 (KX125G) - 1989/1989KX 125 (KX125H) - 1990/1991KX 125 (KX125J) - 1992/1993KX 125 (KX125K) - 1994/1998KX 125 (KX125L) - 1999/2002KX 125 (KX125M) - 2003/2008KX 125 (KX125C) - 1984/1984KDX 200 (KDX200H) - 1995/2006KDX 200 (KDX200E) - 1989/1994KDX 200 (KDX200A) - 1983/1985KDX 200 (KDX200C) - 1986/1988KDX 220 R (KDX220R) - 1997/2005KX 250 F (KX252A) - 2017/2018KX 250 F (KX250Z) - 2013/2016KX 250 F (KX250Y) - 2011/2012KX 250 F (KX250X) - 2010/2010KX 250 F (KX250W) - 2009/2009KX 250 F (KX250T) - 2006/2008KX 250 F (KX250N) - 2004/2005KDX 250 (KDX250D) - 1991/1994KX 250 - 2023/2026KX 250 (KX252C) - 2022/2022KX 250 X - 2023/2023 - 2025/2026KX 250 (KX250M) - 2003/2004KX 250 (KX250R) - 2005/2008KX 250 (KX252A) - 2019/2019KX 250 (KX250L) - 1999/2002KX 250 (KX250K) - 1994/1998KX 250 (KX250J) - 1992/1993KX 250 (KX250H) - 1990/1991KX 250 (KX250G) - 1989/1989KX 250 (KX250F) - 1988/1988KX 250 (KX250E) - 1987/1987KX 250 (KX250D) - 1985/1986KX 250 (KX250C) - 1983/1984KX 250 (KX250B) - 1982/1982KX 250 (KX252B) - 2020/2021KX 450 (KX450J) - 2019/2022KX 450 - 2023/2023 - 2025/2025KX 450 X - 2023/2023 - 2025/2026KX 450 F (KX450H) - 2016/2018KX 450 F (KX450F) - 2012/2015KX 450 F (KX450E) - 2009/2011KX 450 F (KX450D) - 2006/2008KX 500 (KX500D) - 1988/1988KX 500 (KX500C) - 1987/1987KX 500 (KX500E) - 1989/2003