Fitted from the factory, the BETA NIPPLE (OEM 036.42.005.00.00) is Beta’s original Rear Wheel component for the RR 125 2T, RR 125 2T RACING, RR 350 4T, RR 400 4T, RR 450 4T, RR 498 4T and 4 more models (2011–2027). It keeps your Beta performing exactly as the factory intended. Replace it as part of normal maintenance or after wear. An orig...