MRP Ribbon Coil Suspension Fork - 27.5" 170 mm 15 x 110 mm 44 mm Offset BLKMRP Ribbon Coil Suspension Fork 27. 5" 170 mm 15 x 110 mm 44 mm Offset Black. The Ribbon Coil gives you the supple action of coil with end stroke control previously found only with air forks. Compared to air springs fewer seals reduce stiction allowing the fork to be more reactive to the terrain and extending service life. MRPs Ramp Control manages bottom out events and other high frequency impacts to ensure riders stay high in the travel and in