
EK/JT 520SRX2 Chain Kit 13/50 - Ultra-Light Sprocket by EK CHAIN: a set designed for motocross riders who want a drivetrain ready to withstand off-road use without frills. This kit combines a robust 520 chain with an ultra-light aluminum rear sprocket, reducing weight for improved responsiveness and agility.
Designed for motocross use, this kit is particularly suited for demanding off-road models where weight and drivetrain reliability matter. The aluminum sprocket reduces unsprung inertia for sharper acceleration, while the 520 chain remains a common choice for its compatibility and robustness. Ideal for users of GAS GAS EC 250 F (2012–2015) and derivatives.
Compatible motorcycles (examples):