Abstract: A guard for a chain and chain ring of a bicycle includes a bracket and a bracket extension. The bracket extension has a first end and a second end, and at least the second end is integrally formed. The second end includes a U-shaped configuration configured to house a chain retainer. The bracket and the bracket extension may be secured to one another using two fasteners. The bracket and the bracket extension may rotate relative to one another when only one of the fasteners is attached and may be fixed relative to one another when both of the fasteners are attached.

Abstract: A guard for a chain and chain ring of a bicycle includes a bracket and a bracket extension. The bracket extension has a first end and a second end, and at least the second end is integrally formed. The second end includes a U-shaped configuration configured to house a chain retainer. The bracket and the bracket extension may be secured to one another using two fasteners. The bracket and the bracket extension may rotate relative to one another when only one of the fasteners is attached and may be fixed relative to one another when both of the fasteners are attached.

Abstract: A combined chain guide and chain ring protector for a bicycle for off-road use having a lower bracket sleeve, a chain ring around which a drive chain extends and a chain ring outer radius. The protector includes a mounting bracket secured at the lower bracket sleeve and a guard mounted thereto. An outer edge of the guard extends beyond the outer radius of the chain ring, thereby protecting a portion of the chain ring from inadvertent impacts. The chain guide extends from the mounting bracket along a path of the drive chain, and preferably includes an upper guide having an inner barrier positioned inboard of the bicycle chain an outer barrier positioned outboard of the inner barrier and an upper barrier positioned above the bicycle chain for preventing the chain from derailing from the chain ring in an upward direction.

Abstract: A combined chain guide and chain ring protector for a bicycle for off-road use having a lower bracket sleeve, a chain ring around which a drive chain extends and a chain ring outer radius. The protector includes a mounting bracket secured at the lower bracket sleeve and a guard mounted thereto. An outer edge of the guard extends beyond the outer radius of the chain ring, thereby protecting a portion of the chain ring from inadvertent impacts. The chain guide extends from the mounting bracket along a path of the drive chain, and preferably includes an upper guide having an inner barrier positioned inboard of the bicycle chain an outer barrier positioned outboard of the inner barrier and an upper barrier positioned above the bicycle chain for preventing the chain from derailing from the chain ring in an upward direction.

Abstract: A combined chain guide and chain ring protector for a bicycle for off-road use having a lower bracket sleeve, a chain ring around which a drive chain extends and a chain ring outer radius. The protector includes a mounting bracket secured at the lower bracket sleeve and a guard mounted thereto. An outer edge of the guard extends beyond the outer radius of the chain ring, thereby protecting a portion of the chain ring from inadvertent impacts. The chain guide extends from the mounting bracket along a path of the drive chain, and preferably includes an upper guide having an inner barrier positioned inboard of the bicycle chain an outer barrier positioned outboard of the inner barrier and an upper barrier positioned above the bicycle chain for preventing the chain from derailing from the chain ring in an upward direction.

Abstract: A chain guide having a mounting bracket mounted to the bottom bracket shell with multiple coaxial pulleys, each of which is in substantially planar alignment with one chainring of a crank with two or more chainrings. Each pulley cog engages the bicycle chain when the chain is on a corresponding chainring. One of the pulley cogs can be replaced by a roller mounted to the bracket coaxially with the first pulley cog and in substantially planar alignment with the corresponding chainring.

Abstract: A combined chain guide and chain ring protector for a bicycle for off-road use having a lower bracket sleeve, a chain ring around which a drive chain extends and a chain ring outer radius. The protector includes a mounting bracket secured at the lower bracket sleeve and a guard mounted thereto. An outer edge of the guard extends beyond the outer radius of the chain ring, thereby protecting a portion of the chain ring from inadvertent impacts. The chain guide extends from the mounting bracket along a path of the drive chain, and preferably includes an upper guide having an inner barrier positioned inboard of the bicycle chain an outer barrier positioned outboard of the inner barrier and an upper barrier positioned above the bicycle chain for preventing the chain from derailing from the chain ring in an upward direction.