These adapters are used to install UFS 167mm mount inline skating frames to Recreational 165mm mount inline skating boots.
OY3X - UFS to REC mount Adapter/Riser pack includes:
UFS is the "Universal Frame System" which uses 167mm distance between mounting points for attaching frames to inline skating boots. UFS mounting points are centered about the boot / foot.
REC refers to Recreational inline skating boots which use a 165mm distance between mounting points and a raised heel mount compared to the front mount. REC mounting points are offset based on the rear mount being centered about the heel of the boot / foot.
Oysi OY3X UFS to REC mounting adapters allow installation of UFS frames onto 165mm RECreational Mounting System Boots.
These adapters are design with specific geometry that is complementary to the Oysi OY3X chassis to ensure proper centered mounting relative to the boot / foot when installed on the REC 165mm mounting system.
These adapters can be used to install nearly any UFS Frame onto REC Mount Boots.
However, because UFS based frames other than Oysi OY3X may not have the same complementary geometry, the installation may result in a longitudinal offset of the UFS frame that is being mounted on the REC boot. The frame may sit not centered relative to the boot / foot, and generally it is shifted back towards the heel.
Please watch the OY3X introduction video to see how these adapters are used: