ISCG05 is an industry standard to allow manufacturers to create frames and parts that are compatible. It consists of three threaded holes around the bottom bracket, where for example a bashguard can be mounted.
ISCG05 is an improved version, of the old 2003 ISCG standard, often called ISCG03 or just ISCG.
How do I know if my frame has the ISCG05 mounts?
It's easy to figure out: just measure the distance between two holes.
If it is 55,92mm (2.2 inches), you're one lucky bastard!
Beware: our KYTE bashguard is ISCG05 compatible only, not ISCG03.