Discover RPM jump ropes: the ultimate accessory for CrossFit. RPM's high-performance strings are precision-engineered and assembled with care at RPM's headquarters in Northern California. Their quality is meticulously checked to offer you an exceptional product. Thanks to their patented design and a highly specialized assembly process, RPM strings are distinguished by an unparalleled balance of free spin and power transfer. They are recognized for their unparalleled performance in the world of CrossFit.