



Replace your rear sprocket with an ESJOT sprocket designed for the demands of sports and racing. Made from QSTE460 steel and machined using the Diamond Cut 2.0 process, this 525 sprocket with 42 teeth offers precise tooth engagement and a treated finish to withstand intensive wear. Concentricity and runout are maintained within 0.1 mm for smooth chain guidance and controlled load on the final drive.
Designed to withstand high revs and sustained usage conditions, this sprocket is suitable for sport motorcycle transmissions where alignment precision and durability matter. Compatible with several high-performance models (e.g. Kawasaki H2R 1000 Ninja), it installs as a standard replacement for the 525 chain. Choose this sprocket if you are looking for a robust part machined with strict tolerances to keep the chain properly guided and limit premature tooth wear.