Rimpact Tuned Mass Damper

- The first internally installed mass damper for mouintain bikes made of 97% pure tungsten\n- The TMD reduces vibrations and fatigue in a compact design\n- Aluminum and steel, tapered and 1 1/8” steerers, single and dual crown, oval or cylindrical are all compatible(steerer length 0f 190mm+ required)\n- IGUS bushings allow the mass to move freely between the 2 springs and are self lubricating \n- Three die spring options are included and calibrated to carefully chosen frequencies(blue-light, yellow-medium and red-heavy)\n- 420g