Some kids make small modifications to their bikes so that something drags against the spokes or tyres to make a sound as they ride. You can take this to another level with the TurboSpoke Bicycle Exhaust System. It only takes about 5 minutes to install and comes with 3 different sounds to represent off-road motorbikes, muscle bikes, and somewhere in the middle. The metal-looking plastic exhaust pipe amplifies the sound made by the “Motocards” to make it much more impressive. Comes with stickers for decoration and an allen wrench for installation.
$19.95 when it was available.