ORIGIN 8 AHEAD FUSION EXPNDR 1-1/8x50 UD CARBON TOP BLACK HYDRAULIC DISC 8mm hole for 1pc cranks

8mm hole for 1pc cranks with shims for 19/22mm 3pc cranks included

Full length provides protection not only for the rider but those around them as well

5mm and wider - If the Quarq spider has an ID less than 49

Thread together bottom bracket for frames using the BBRight bottom bracket standard

ORIGIN 8 AHEAD FUSION EXPNDR 1-1/8x50 UD CARBON TOP BLACK HYDRAULIC DISC 8mm hole for 1pc cranks3 piece expander design provides a secure fit within carbon steerer tubes UD carbon top cap included 22 25mm range of expansion 50mm height reinforces carbon steerer tube beneath the stem New design evenly distributes headset compression forces Lightweight AL6061 alloy construction Stainless steel bolt