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Home Motorcycle Spare Parts AJS Stormer 250/370/410 Section A1, A2, A3 & 410 - Engine A1 - Y4 250cc engine PISTON RING SET +010 Y4
+010" piston ring set.Fits:250 Starmaker (needs ring gap filing if "original Starmaker" piston is used. This is because the Stormer uses shrouded ring pegs where the Starmaker used butted rings)250 Stormer, all models.