Trapped particles can restrict airflow, and if dirt works its way into your engine, a pinhead-sized granule will gouge your cylinder, piston and rings like a bullet. The course, open-pore outer foam catches airborne dirt, grime and sand while a fine, open-pore inner foam acts as a second filter to trap small particles ensuring maximum air passage. Twin Air's Standard air filters feature an exclusively formulated adhesive that withstands repeated cleanings and a greaseless foam sealing ring that acts as a breathable gasket for increased air passage. Pre-Oiled filters are treated with Twin Air® BIO Foam Filter Oil using state of the art filter oiling machines, which provide the ultimate consistency in pore coverage. The same treatment that Factory Race Teams and O.E.M.s receive is now available to all Twin Air customers.
-High quality, dual-stage filter
Fits 450RX, 2020-on RR/full-size RR-S/RS, and 2023-on XTrainer.
Twin Air Beta RR|RR-S (20-)|XTrainer (23-) Pre-Oiled Air Filter Produced by Twin Air of the Netherlands
Graphics kit was fine, but the plastics on my 2018 Beta 250rr are from Polisport. They're a bit different than the OEM plastics originally on the bike. Bought the bike used so I didn't know that.
Return was easy.
Second time I've ordered this kit from Sierra Moto Supply. Comes in sturdy cardboard envelope and then boxed incredibly well to protect the case cover gasket. Always a good experience with Sierra.
Genuine oem kit in Beta packaging/labeling. Bought to have on hand and haven't had to use it yet. Great price and smooth ordering process from Sierra Moto Supply.