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 450RX|RR|RR-S (20-)|XTrainer (23-) Air Filter Produced by Twin Air of the Netherlands
Nice finish, easy installation. Pricey for what you get but that is normal for cycle accessories. It is very hard to communicate with people at Sierra through phone or text. Finally got response with email. Love my Alpx
Sturdy and well made but there are no instructions at all included
Sturdy and well made but there are no instructions at all included. I couldn’t find instructions on any website. I finally worked it fout like assembling a puzzle, butor the price one would expect at least a diagram.
Great product, great price, I’d recommend it to my riding friends for sure!
Giant Loop Armadillo Bag
Ben Shirley
Great service
Great service, always on time...
Beta USA Liqui Moly 4-Stroke Oil Change Kit
Joseph Hamilton
Love my new radiator guards for my 2025 Beta Xtrainer
Love my new radiator guards for my 2025 Beta Xtrainer. Perfect fit and added a lot of reinforcement to the factory radiators.
Beta XTrainer Radiator Guards
Sundayrides55
Stayed hydrated throughout the humid South Carolina days
The Kriega Hydrapak kept me hydrated during the recent 2026 Palmetto Adv Rally. Filled it up in the morning with ice cold water and the water was still cool in the afternoon!
Kriega Hydrapak Reservoir Elite 3 Liter
Craig Criscone
Beautiful header
Beautiful header,fit and finish is top notch.Woke my 350 xpro up.