21-Speed Mountain Bike With Mechanical Disc Brakes
21-Speed Mountain Bike With Mechanical Disc Brakes
- ADULT AND YOUTH MOUNTAIN BIKE: Go exploring with the Grafton by Mongoose. Featuring 24, 26 or 27.5-inch wheels, this bike is perfect for riders from 4'8" - 6'0" tall. Built for adult and youth riders, this bicycle brings everyone in on the fun.
- BORN IN DIRT: From pavement to singletrack, the aluminum mountain frame is built for adventure. With modern geometry and an internal headset, this adults, girls and boys mountain bike offers a clean, streamlined look.
- BUILT FOR ADVENTURE: This Mongoose kids bike is ready to roll with 2.3-inch-wide knobby mountain tires for superior grip and stability. The suspension fork absorbs bumps and rough terrain, ensuring a smooth, controlled ride.
- SHIFT INTO GEAR: This 21-speed bike features trigger shifters for smooth transitions and the right gear for your ride. Mechanical disc brakes provide reliable all-weather stopping power, giving riders control on varied terrain.
- KNOW YOUR ROOTS: As one of the OGs in BMX and action sports, Mongoose has helped bring this movement to the world. For over 50 years, we've been all about epic rides and pushing limits – and we're just getting started.
Made with care
Heirloom quality
Premium materials
Classic styling
Styled With
Road Bikes And Smart Ride Mounts
Explore road-ready bikes built for speed, control, and long-distance confidence, paired with secure bike phone mounts that keep navigation, ride tracking, and everyday route planning within easy reach. From open-road training to daily urban rides, this collection brings performance and practical control together for a smarter cycling experience.
FAQ
We have compiled a list of frequently asked questions to help you.
How do I choose the right product for my ride?
Start with your riding style, bike type, and daily route. Product pages include key details to help you compare fit, function, compatibility, and intended use before checkout.
When will my order arrive?
VeloCore offers free shipping on all products, and orders are typically delivered within 3–5 business days after processing.
Can I return or exchange my order?
Yes. We offer free returns and exchanges within 30 days, so you can shop cycling gear with more confidence.
Do subscribers receive a discount?
Yes. Email subscribers receive an automatic 15% sitewide discount with no code required. Selected promotional products may also receive an automatic 20% discount.
How can I contact customer support?
Our support team is available 24/7 to help with product questions, order support, shipping, returns, and exchanges.