The RD350 YPVS Power Valve mug takes its name from Yamaha's two-stroke twin, famous for the YPVS system that reshaped its exhaust port timing on the move to sharpen the powerband at higher revs. It was a genuine performance leap for its era, giving the RD350 a reputation that still gets talked about in workshops decades later. This mug carries that Power Valve name in a clean, minimal print across a classic white, bold two-tone or rugged enamel finish — equally at home next to the kettle or on a workbench. Pick it up alongside matching hoodies, t-shirts and beanies to complete the set.