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Sprocket RFX Pro Series HCS Steel - 520

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RFX Pro Series HCS Steel - 520 SprocketRef : RFX01140A / 1123222001

Recommended retail price:38,00 €?

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32,30 ^€

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Description
Compatible motorbikes
Questions and answers

DescriptionRFX Pro Series HCS Steel - 520 Sprocket

Product details :

Features

RFX Pro Series HCS Sprocket - 520, 48 teeth (Manufacturer part number: FXRS 20-48 99ST)

Designed for motocross, this RFX Pro Series sprocket made from high carbon steel combines strength and precision. Its CNC laser cutting and CAD-designed profile ensure tight tolerances and optimized tooth geometry. The HCS material offers improved wear resistance compared to mild steels while allowing for a thinner profile, minimizing weight differences compared to aluminum sprockets.

Material: high carbon steel (HCS)
Pitch: 520
Number of teeth: 48
Color: silver
Finish: CNC laser cut, CAD profile
Design: mud evacuation grooves and reinforced rigidity for better torsional resistance

Installation (summary): place the motorcycle on a stand, remove chain and wheel, disassemble the worn sprocket, clean the hub, position the new sprocket, tighten the bolts with thread locker, and follow the torque specifications provided by the manufacturer before reassembling the wheel and adjusting the chain tension.

Ideal for motocross riders seeking a durable and precise sprocket, compatible with KAWASAKI KX 450 X (2026), KX 250 X (2026), and KX 250 (2026).

Technical information :

Reference

RFX01140A / 1123222001

No transmission chain

520

Number of teeth (crown)

Type of crown

Standard

Number of teeth

48 teeth

Material

Steel

Color

Silver

Compatible motorbikes

KAWASAKI51 compatible models

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