Industry Nine iRiX IS41/IS52 Headset : IS41/28.6 | IS52/40 Integrated Complete Purple CheckoutTitle=Stan's Arch MK4 Front Wheel - 27.5 and strategic mesh ventilation stops

and strategic mesh ventilation stops you from overheating

Patented seamless technology offers remarkable comfort and support

Fits Brand Rocky Mountain

Default Settings Reb55/Comp30 Adj Hydraulic Bottom Out Body Eyelet Standard Damping RC2T Adj

Industry Nine iRiX IS41/IS52 Headset : IS41/28.6 | IS52/40 Integrated Complete Purple CheckoutTitle=Stan's Arch MK4 Front Wheel - 27.5 and strategic mesh ventilation stopsTECH SPECS Crown Race Diameter 40mm Headset Position Complete SHIS Upper IS41 28. 6 Steerer Tube 1 1 8 1. 5 Lower Cup 52mm S. H. I. S. IS41 28. 6 IS52 40 Primary Color Purple SHIS Lower IS52 40 Bearing Grade Stainless Steel Headset Type Integrated Upper Cup 41mm Material Aluminum