- Optional hanger sold separately to fit your setup. Sunflowers or other expansion hangers can be used to repair gold without the hanger. The mounting method for the front fork of a mountain bike is the same. - Size and adjustability: Riser total length 36-53 cm; height adjustable from 0 to 17 cm. - Construction: Four link locks for stable, reliable adjustment. - Geometry and operation: No teeth; folds to the left (fold inward); forward tilt 9 degrees. - Use scenarios: - Mountain bike riders can tailor handlebar height for a more comfortable riding position on long climbs or technical descents. - Bike builders or enthusiasts can customize setups by using sunflowers or expansion hangers to suit different accessories without changing the main hanger. - When not in use, the left-fold and compact profile help with storage and transport.