These YZ250 clamps reduce the offset only 1.5mm. They flex like stock and even have the YZF's factory rubber mounting system. Riders on these models must add our 1 1/8" over-sized rubber mounted bar mounts (YZ-BBM00-CA), firm or soft poly cones (CR-PC000-KT or CR-PC00Y-KT) and hardware (MX-10125-KT). The OEM bar mounts will not fit. These clamps are compatible with the old '05-'09 and new '10-'23 front fender. Its also possible to add a Showa steering dampener (2005-23 YZ250) with these clamps. 23.5mm Offset recommended for Motocross (MX); Off-road racing (GNCC) and desert racing (DR). This set is designed as a compromise between improved handling and working well at higher speeds or for sand and muddy conditions (stock offset 25mm). Made from 2024 aluminum (same alloy the factory teams use) the set saves 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.