Bolt Motorcycle Hardware (2007-RVS) Rim Lock and Valve Stem Seal Designed to effectively seal out dirt and moisture where they affect off-road motorcycle wheels the most: at the valve and rim stems Aluminum rim-lock spacers and rubber valve stem grommets are custom contoured to allow even distribution of stress and to seal out the elements Helps reduce corrosion in your wheel, keeping spoke nipples from freezing up, reducing friction and flats Contains two rubber valve stem grommets, two aluminum rim-lock spacers, two self-locking flange nuts, and two black plastic valve caps Also includes a polished metal valve cap and a valve cap with a built in valve stem remover