SPANK SPIKE 369 Vibrocore(TM) Rim - Limited Edition World Cup tested. Rider approved. The SPANK SPIKE 369 Vibrocore(TM) Rim is a gravity-focused rim built for hard-charging enduro and downhill riding, when rim strength, bike control, and vibration absorption matter most. The Spike 369 Vibrocore Rim features a moderately low 19mm profile height, paired with a wide 30. 5mm internal width to balance radial compliance with lateral stiffness for predictable handling at high speeds on tough trails. The secret sauce is the Vibrocore(TM) foam which is injected into the rim, reducing vibration and even increasing rim fatigue life. With Sacred Geometry hollow bead walls and Spank's Bead Bite hookless profile, the Spike 369 Vibrocore is designed to improve impact resistance and improve tubeless tire security at lower pressures. The end result is a rim that helps cut down on trail chatter without compromising precision and lateral stiffness. Features Vibrocore(TM) foam injection reduces harmful vibration frequencies and increases rim fatigue life Sacred Geometry bead wall improves lateral and vertical strength while helping reduce pinch flats Radial compliance profile boosts traction over bumps and reduces the harsh feedback from being transmitted back to the rider30. 5mm inner width supports tire sizes from 2. 0" to 2. 6"Bead Bite hookless design for increased tubeless reliability and tire security at lower pressures SPECIFICATIONSWeight (+/-)630g (27. 5") / 660g (29")Inner Rim Width30. 5mm Outer Rim Width39mm Rim Profile Height19mm Tubeless Compatible Yes | Spank | Spike 369 Vibrocore(TM) Rim Ltd Edition 29" Pink | Aluminum