Vrooom! Turn your bicycle into a lean, mean, trail riding machine with Turbospoke, the Bicycle Exhaust System. Remember putting baseball cards into the spokes of your bicycle to create motorcycle sounds? Turbospoke takes it to the next level. Use one of the three, specially designed Motocards to get the unique motorcycle sound effect you want. The cards are durable and waterproof for long-lasting, hard-charging fun. The specially designed Turbospoke Exhaust Pipe amplifies the sound creating a realistic motorcycle sound
