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Home Motorcycle Spare Parts AJS Stormer 250/370/410 Section A1, A2, A3 & 410 - Engine A1 - Y4 250cc engine STARMAKER & Y4Mk1, BASE GASKET (0.010" thick)
250 Base Gasket (thin) 0.010"Used as standard on Starmaker and Y4 only.Can be used to "shim" up the squish band to the desired 0.040".Non asbestos