Hi. I have for sale a used alloy seatstay removed off a Trek Fuel EX 9 2015 29er. No cracks or dents. Has signs from usage (scratches, paint bubbling in one area - maybe from brake fluid) It fits all 29er Fuel EX 2014-2015 frames with alloy seatstay and 2016 Fuel EX5 / EX7 29er. If You don't know if it fits Your Fuel EX just send me a message with photo of You frame.