This is an optional Yokomo Adjustable Suspension Mount Set, anodized red and intended for used with the YD-2 series. This is an aluminum suspension mount set that best matches the limited red version of the YD-2 series. It is possible to upgrade further with other red anodized parts. This set includes two B (43.5-46.7 mm) for the front according to the short suspension arm specifications, and D (57.2-60.4 mm) and E (60.8-64.0 mm) for the rear, as well as hardware.