Cook pasta according to package directions for al dente, in salted water.
Heat a large skillet to medium-high. Add sausage links and brown on all sides, until no longer pink. Transfer sausage to a cutting board or plate. Set aside.
Add olive oil, peppers, and onion to the pan with a pinch of coarse salt. Cook the vegetables until the onions are translucent. Add garlic and continue to cook for another minute.
Add the tomatoes and basil to the pan and reduce heat to a simmer. While the sauce simmers, slice the sausage and return to the pan.
When the pasta is cooked drain and toss with the sausage and peppers until evenly coated with sauce. If needed, adjust seasoning with salt & pepper to taste.