EVO features interchangeable snap-fit injection molded shims which increases seatpost compatibility and futureproofing the SwitchGrade to fit upcoming posts. 17% smaller than SwitchGrade V1 for a more integrated look. Allows rider to control the saddle angle and position on the fly . Easily convertible between 2 or 3 locked positions by simply blocking out one of the detents. Climb setting steepens effective seat angle by -10 degrees, provides approximately 20mm additional height and 10mm forward offset. Downhill setting tilts 12 degrees back, lowers effective saddle drop approximately 30mm. Release lever can be run forward or backwards, depending on preference. Compression wedge rail clamps and swingarm design enables compatibility with round 7x7 rails or oval rails: 7x9, 7x10. Oval rail clamps sold separately. Compatible with a wide range of dropper and rigid seatposts (see aenomalyconstructs.com for fitment list). Unique solution for those with back or groin problems. Made in Canada, CNC machined from 7075 T6 and 6061 T6 aluminum. Net weight gain after replacing the stock rail clamps is about 85 grams