MRP Riser Crown Race Rise to the Challenge Head angle matters. A degree or half-degree of slack can change how a bike tracks through rough terrain, and the Riser Crown Race gives you that adjustment at the fork crown rather than through an entirely new frame or headset. It seats in place of a standard crown race and raises the fork in the headtube by either 5mm or 10mm, slackening your head angle in the process. That same stack height also solves downtube clearance issues when fork crown hardware or adjustment knobs are too close for comfort. The aluminum construction keeps weight reasonable, and the 36-degree mating surface works with the most common integrated headset standards on the market today. Low Rise (5mm) option reduces head angle by approximately 0. 25deg for a subtle geometry shift that suits riders who want a small correction without a dramatic handling change High Rise (10mm) option delivers approximately 0. 5deg of head angle reduction, meaningful enough to feel on aggressive trail or enduro geometry where slacker is better36/45deg bearing compatibility works with Cane Creek, FSA, Chris King, and other standard 1. 5" integrated headset systems so you are not locked into a single brand CNC-machined aluminum construction keeps the race light and precise, ensuring proper bearing seating and consistent headset feel after installation | Mrp | Riser Crown Race 10Mm High Rise