

520MX6 14/52 reinforced chain kit with an Ultra-Light mud-resistant sprocket—a short MX setup that prioritizes traction and acceleration while minimizing the buildup of mud and sand.
AFAM offers this reinforced 520MX6 chain kit for the GAS GAS MCF 250 cc, GAS GAS MCF 350 cc, HUSQVARNA FC 250 cc, HUSQVARNA FC 350 cc, KTM SX 150 cc, KTM SX RACING 450 cc, KTM SX RACING FACTORY EDITION STEVE RAMON 450 cc, KTM SX-F 250 cc, KTM SX-F ADAMO EDITION 250 cc, KTM SX-F FACTORY EDITION 250 cc, KTM SX-F 350 cc, KTM SX-F 450 cc, KTM SX-F FACTORY EDITION 450 cc, KTM SX-F FACTORY EDITION MAX NAGL 450 cc, KTM SX-F PRESERIES 450 cc, with a 118-link A520MX6-GG chain, a standard 14-tooth 73301 steel sprocket, and a 52-tooth 72304 aluminum sprocket. The chain features a gold/gold finish, a 520 pitch, and reinforced construction designed for MX use. The 14/52 gear ratio—equivalent to 3.71—provides greater traction and responsiveness during acceleration and when exiting corners. The Ultra-Light aluminum mud-resistant sprocket features a Racing T4 design that facilitates the removal of mud, sand, and debris from around the drivetrain. This design thus combines a lighter sprocket with improved clearance of debris accumulated on demanding terrain.
Fits:
2021 KTM 450 SX-F Factory Edition
2023 KTM 450 SX-F
2025 KTM 250 SX-F
2024 KTM 250 SX-F
2025 KTM 250 SX-F ADAMO EDITION
2025 KTM 350 SX-F
2019 KTM 150 SX
2006 KTM 450 SX RACING
2005 KTM 450 SX RACING
2005 KTM 450 SX RACING FACTORY EDITION STEVE RAMON
2013 KTM 450 SX-F
2012 KTM 450 SX-F
2011 KTM 450 SX-F
2010 KTM 450 SX-F
2009 KTM 450 SX-F
2008 KTM 450 SX-F
2007 KTM 450 SX-F
2027 KTM 250 SX-F
2026 KTM 250 SX-F
2027 KTM 250 SX-F FACTORY EDITION
2026 KTM 250 SX-F FACTORY EDITION
2027 KTM 350 SX-F
2026 KTM 350 SX-F
2013 KTM 450 SX-F Factory Edition
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