Old Man Mountain Rear Fit Kit SET125 M12x1.25 Model=40-Series ZS - Zero Stack Headset CNC crafted with 7075 aluminum

CNC crafted with 7075 aluminum

backward for more glide or to the “0” position for the best of both worlds

Pair with the full Wahoo Ecosystem of smart devices to track analyze and share your breakthrough gains

} Critical T25 bolts for flat mount caliper installations in a variety of lengths

Wide hip wings and Airo Flex hip belt for optimum fit

Old Man Mountain Rear Fit Kit SET125 M12x1.25 Model=40-Series ZS - Zero Stack Headset CNC crafted with 7075 aluminumComes with stainless nuts, frame pucks and hardware Designed, tested and made in Bend, Oregon Model Fit Kit Description 12mm Rear Axle Mount Kit Axle Length (mm) Thread Pitch M12x1. 25 Color Silver Axle Size 12Mm