The X-Coil is an original spring developed by Endless to achieve the highest level of accuracy. The X-Coil exhibits the correct spring rate during a much larger portion of the compression range than the competition. As such, internal valving for all ZEAL coilovers has been set to new standards of precision, resulting in a higher performing, more accurate and predictable coilover
The X-Coils R s an original spring developed by Endless to achieve the highest level of accuracy. The X-Coil R is designed to have maximum road connectivity and offers the best feel for a circuit focused driver. X-Coil R springs are made from a stretch-level 230 kg steel material that is also very lightweight. The advanced nature of these racing springs has made them the spring of choice in the Super GT and Super Taikyu series. To match these springs, internal valving for all ZEAL coilovers has been set to new standards of precision, resulting in a higher performing, more accurate and predictable coilover system.
Photo: Super GT GT300 Class suspension assembly