For Immediate Release: Introducing the MRP Jul 29, 2016 Filed under: Harley-Davidson, Mechanical Reverse Pulley, MRP, Reverse, Yelvington Share Tweet Pin it Fancy Add SEMINOLE, Fla. – Yelvington USA announces today they are delivering their patented Mechanical Reverse Pulley system (MRP) at the 2016 Sturgis Rally to assist riders to never again be stuck between a rock and a hard place. Read more...