Wahoo KICKR CORE Wahoo KICKR CORE Smart Trainer Direct Drive Roller WFBKTR4 In mid-December 2025 (just before listing), an unusual noise occurred during use, and I stopped using it immediately. I had been using it without any problems until then. The unusual noise sounds like it might be rust in the bearings, but I haven't disassembled it to confirm. Besides the main unit, the accessories include the through-axle and quick-release attachments shown in the third photo, the power cable, and assembly tools. There is no instruction manual. A sprocket is required separately; the freehub body is for Shimano. It will be shipped in a KICKR CORE 2 box. No comments, immediate purchase OK. I will gradually lower the price for items that don't sell.