AFAM offers the reinforced 520XRR3 13/50 chain kit with an ultra-light, mud-resistant sprocket for the BETA RR 125cc, BETA RR 350cc, BETA RR 400cc—a complete solution designed for enduro and motocross motorcycles subjected to high stress. This kit combines a reinforced X-Ring chain, a standard sprocket, and a lightweight aluminum chainring designed to minimize the buildup of mud and debris when riding on rough terrain. Reducing rotating mass promotes a more responsive power delivery and better acceleration. X-Ring technology helps reduce chain wear and stretch, ensuring a longer service life even under intensive use. Its design ensures efficient power transfer while maintaining excellent resistance to off-road stresses. This kit is an ideal choice for riders seeking a balance between light weight, performance, and drivetrain durability. 

Fits:

2019 BETA RR 125 2-Stroke Enduro

2018 BETA RR 125 2T ENDURO

2019 BETA RR 350 4T ENDURO EFI

2018 BETA RR 350 4T ENDURO EFI

2017 BETA RR 350 4-Stroke Enduro EFI

BETA RR 350 4-Stroke Enduro EFI 2016

BETA RR 350 4-Stroke Enduro 2014

BETA RR 350 4-Stroke Enduro 2013

2018 BETA RR 350 4-Stroke Enduro EFI Racing

BETA RR 350 4-Stroke Enduro EFI Racing 2017

2016 BETA RR 350 4T ENDURO EFI RACING

BETA RR 400 4-Stroke Enduro 2014

BETA RR 400 4-Stroke Enduro 2013

BETA RR 125 2-Stroke Enduro Racing 2019

BETA RR 350 4-Stroke Enduro Racing 2019

BETA RR 350 4-Stroke Enduro Racing 2013

BETA RR 125 2-Stroke Racing 2021

BETA RR 125 2-Stroke Racing 2020

BETA RR 125 2-Stroke 2021

BETA RR 125 2-Stroke 2020

BETA RR 125 2-Stroke 2024

BETA RR 125 2-Stroke 2023

BETA RR 125 2-Stroke 2022

BETA RR 125 2-Stroke Racing 2024

BETA RR 125 2T RACING 2023

BETA RR 125 2T RACING 2022

BETA RR 125 2T XPRO 2026

BETA RR 125 2T XPRO 2025

BETA RR 125 2T RACE 2026

BETA RR 125 2-Stroke RACE 2025