National Cycle, Beaded 7-bolt lower window. Black - H-D with OEM 7-bolt pattern beaded windshield 509977 Stage I kit includes a

Stage I kit includes a high-flow filter and accepts 93-15 oval or round OEM outer cover (unless noted)

OEM replacement reference 25224-52A

Fits most models with the stock exhaust crossover (interconnect) tube (also called balance pipe)

chrome-plated rear pulley inserts

Includes 8 friction discs

National Cycle, Beaded 7-bolt lower window. Black - H-D with OEM 7-bolt pattern beaded windshield 509977 Stage I kit includes aBlack. OEM style replacement lower window for OEM 7 bolt pattern windshields. This National Cycle's lower window is manufactured from FRM hard coated clear Lexan polycarbonate which is the highest quality motorcycle windscreen material available. Note: Is not compatible with National Cycle 5 bolt pattern windshields.