The one-of-a-kind handlebar with adjustable riser gives you more leverage to easily maneuver the SPARK and customize your experience to your personal riding style. Quickly adjust steering to a variety of heights - use the lower position for cruising/sitdown riding, or extend to maximum height in seconds for stand-up riding. Adjustable length of 1.6" to 4" (42.5 mm to 103.5 mm). Just flip the lever to make the adjustment, no tool required. Part numbers you will also need for installation: SPARK without iBR* 2016 and prior: 278003491, 295100702 2017 and up: 278003491 SPARK with iBR 2016 and prior: 278003490, 295100702 2017: 278003490 2018 and up: 278003823 *Intelligent Brake and Reverse (iBR).