The Evil Bike E13 Supercharger bashguard allows is a chainring’s best friend. No, it is not metal - it’s better. It is made with Evil Bike’s indestructable patent-pending Makrolon plastic. It is designed to be used either as a standalone bashguard (without a chainguide), or with a chainguide of your choice. The Supercharger replaces the large ring on your crankset, meaning that you can use a middle and/or a granny gear concurrently. It is not designed for a three ring application. Monk a Moo stocks three models - the 32 Special to protect rings with up to 32 teeth, the Urban for rings up to 36 teeth, and the MTN-X for rings up to 40T. All have a bolt pattern of 4x104, and they come in Clear, Black, White, Red Translucent, or Blue Translucent.