Complex sentence: The model they made for Puch was the Trak Pro. In 1981 they also began sponsoring BMX racers across the united states and the Green, Black and White uniform was soon showing up at BMX tracks in America, especially in the Northeast.
Split into simpler sentences: The model they made for Puch was the Trak Pro. In 1981 Puch also began sponsoring BMX racers across the United States. The green, black and white uniform was soon showing up at BMX tracks across America, especially in the Northeast.