· Direct, plug - in replacement for 2004 - present Harleys equipped with 5” speedometer console · Digital speedometer display · Digital LED - bar tachometer · Odometer and trip functions · Displays engine “vitals,” such as cylinder head temp and battery voltage · User - configurable alarms for speed, head temp, and battery voltage · Calculates horsepower, and 0 - 60 time evaluate your last tune or modification! · Payback function records up to 30 seconds of data! · Calculates fuel mileage and range · Programmable shift light · Illumination automatically adjusts for night or day viewing (intensity is adjustable) · Rugged billet aluminum housing · Simple, two - button programming · Comprehensive instruction manual Zipper’s Performance Products and Thunder Heart Performance Corporation are joining forces as the J1850 Alliance to create products that are “J1850 compatible” for 2004 - later Harleys . Thunder Heart’s cutting - edge technology combine with Zipper’s expertise in performance to provide the rider with the best products possible . The J1850 Alliance is pleased to announce their latest accessory for late - model Harleys: the new Digital Performance Speedometer Module . It combines a digital speedometer and tachometer with a built - in performance computer and information center to allow riders unprecedented access to useful information . In addition to the standard speed, RPM, and odometer functions, the Digital Speedometer Module displays “engine vitals,” performance measurements, and configurable alarms . All this, with a programmable shift light! The Digital Speedometer Module is housed in a rugged, chrome - plated billet aluminum housing that is a direct replacement for the speedometer in all 2004 - present Harleys equipped with a 5” console speedometer . 2004 - present Harley Davidsons equipped with 5” speedometer console PATENT PENDING