One Pair of Black OS alienation 36H – Free US Shipping $100+

New (Old Stock): New pair of Alienation OS20 black 36H rims, oversized 20" design using 451 ISO bead seat diameter for OS20 race setups. Double-wall, pinned/sleeved construction gives a stiff, durable rim ideal for high‑level BMX racing and OS20 conversions. Not compatible with standard 406mm 20" tires—these are for 451/OS20 tires only.