Huffy 24" Oxide 21-Speed Mountain Bike with Dual Disc Brakes. Great performance. Thrilling adrenaline rush. Awesome look. When you're ready to pedal beyond the pavement, the Huffy Oxide 24-inch Mountain Bike with dual suspension has got style and the specs you want for a cool, confident ride. The 21-speed shifting system with a Shimano rear indexed derailleur consistently shifts between gears for quick adjustments venturing uphill or accelerating on level ground. Comfortable trigger shifter delivers smooth, easy shifting. Plus, the dual suspension frame combines with the suspension fork for great response whether you chose an exhilarating ride on a trail or a more relaxed ride through the neighborhood. Front and rear dual disc brakes provide a more consistent response with reliable stopping action in all types of weather. These brakes are especially handy for climbs and descents, and for more dependable control in muddy or rocky areas. Ride with confidence on this hardtail mountain bike. With disc brakes, this bike allows the use of wider tires