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August 20, 2026 Service bulletin

Gasgas

Gasgas technical service bulletin GTB2604 for 2024 Gasgas ES 350 and 2024 Gasgas ES 500.

Bulletin number
GTB2604
Component
Service brakes
Summary
GASGAS North America has determined that a defect which relates to motor vehicle safety exists with certain model motorcycles listed above. During backwards rolling, the rear brake caliper may crack near the primary pin casting, which may cause the caliper to break when riding. Cracks or breaks in the rear brake caliper can reduce braking ability, increasing the risk of a crash. To remedy this defect, the rear brake caliper including the caliper bracket must be replaced on all affected motorcycles.

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