







EK/PBR 520SRX2 Chain Kit 14/52-118 by EK CHAIN: a complete set designed for motocross and off-road use. This kit combines the SRX2 chain equipped with QX-Ring seals and a standard aluminium sprocket — suitable for riders looking for a good balance between durability and weight.
The SRX2 with QX-Ring seals reduces oil loss at the links compared to a chain without seals. The aluminium sprocket decreases unsprung weight, which is beneficial on off-road machines where every gram matters. Supplied with 118 links, this kit is suitable for 520 transmissions, but be sure to check the exact compatibility and required length on your machine before installation.
Examples of compatible motorcycles: KTM 350 EXC-F SIX DAYS (2026), GAS GAS EC 450 F (2025), KTM 350 EXC-F (2026). A popular choice among enduro/cross riders who want a high-performance and economical solution to get their transmission back in working order.