1-7/8" Spider Diameter

This category gathers Extreme HD Parts components sharing a 1-7/8″ spider diameter. You’ll find Extreme Cam enclosure tubes, offered tube-only and as complete tube kits, plus s-cam bushing kits with a matching 1-7/8″ bore in left-hand and right-hand configurations. It’s a quick way for fleet mechanics and shops to find every part built to the 1-7/8″ spider size.