" indicate the difficulty level for installing the product.When riding though dusty roads or in the rain you want to protect your Thunder Kit with this handy Rain Cover. The Rain Covers are pretreated silicon polyester wraps. This material contains uniform micron sized openings that allow air in, yet deflects any water splashed up on the air filter. Recent Dyno and flow bench testing has shown no significant loss of horsepower with the Rain Cover.When riding though dusty roads or in the rain you want to protect your Thunder Kit with this handy Rain Cover. The Rain Covers are pretreated silicon polyester wraps. This material contains uniform micron sized openings that allow air in, yet deflects any water splashed up on the air filter. Recent Dyno and flow bench testing has shown no significant loss of horsepower with the Rain Cover.
Note: These covers are not 100% waterproof, but do provide some protection from dust and rain.