CushCore XC Tire Insert - 27.5 Single brand_draftmaster Weight: 270 g

Weight: 270 g

All drums are dynamically spin balanced

Includes stainless steel cables with on-the-bar cable change ability

Works with most friction shifters

CushCore XC Tire Insert - 27.5 Single brand_draftmaster Weight: 270 gHow Cushcore Works CushCore is based on a new concept: Tire Suspension. Any suspension system has a spring and a damper, and with CushCore, pressurized air in the tire is the spring and the CushCore tire insert is the damper. Also like traditional suspension, a constant damping force wouldnt work. It has to be dynamic. Suspension should be supple on small bumps but firm on big hits. CushCore responds differently depending on the tire loading scenario.