Fitted from the factory, the BETA PISTON RING D.72 (OEM 026.02.031.00.00) is Beta’s original Crankshaft/Piston/Balancer Shaft component for the RR 300 2T, RR 300 2T RACING, RX 300 2T, X-TRAINER 300 2T (2013–2025). It keeps your Beta performing exactly as the factory intended. Replace it as part of normal maintenance or after wear. Genuine ...
