13 from the bottom of the side plates to the top of the pad. Check out my other items. BECAUSE OF HOW LOW THEY SIT, MINI BACKRESTS WILL NOT WORK WITH EXTRA WIDE OR TOURING STYLE PASSENGER SEATS. IF YOU HAVE FITMENT QUESTIONS, PLEASE ASK.The item "04-18 Harley Davidson XL Sportster Detachable Sissy Bar Backrest SHORTY" is in sale since Friday, April 6, 2018. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Accessories\Other Motorcycle Accessories". The seller is "bmcmark" and is located in Bettendorf, Iowa. This item can be shipped worldwide.