The following movies are not exactly horror movies, but still involve Halloween or Halloween characters and motorcycles...just in case the first five movies were too scary for you.
The Karate Kid - 1984
I couldn't talk about Halloween movies and leave out The Karate Kid, even if only for the initial bike chase scene.
Ghost Rider - 2007
Yes, I know it sucked, but it has motorcycles. Watching Nicholas Cage act counts as terrifying, right?
The Twilight Saga: New Moon - 2009
I know, and I'm sorry for including it. Sweet slide, bro. Remember kids: no sex before marriage or your baby will eat you from the inside out.
You say commercial, I say my favorite combination of werewolves and motorcycles.
How To: Outrun The Zombie Apocalypse On a Motorcycle
Gear: Motorcycle Gear That Doubles As A Halloween Costume
Movies: More on Motorcycles in Movies