New 23.5mm offset best for higher speeds, rough tracks and in sandy or muddy conditions. Recommended for taller riders over 180lbs on 2023 YZ450f. Ride Eng. recommends the 22mm offset on the 2016-2022 YZ450f and for the 2012-2013 YZ250f. Add a Showa steering dampener (2010-2023 YZ450F, 2014-2023 YZ250F) to improve control entering and exiting rough corners and in deep ruts. Most riders upgrade the bar mount to our one-piece design because it reduces handlebar twist in the event of a crash (YZ-BBM00-CA) however OEM bar mounts, rubber cones and nuts all fit. Made from 2024 aluminum (same alloy the factory teams use) weight saved is about 7oz over stock. Included in kit: Top clamp; Bottom clamp, pressed in stem, lower bearing and pinch bolts. Usually compatible with aftermarket stabilizers, call the manufacturer to confirm.