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It's right for you if...
Your little shredder is ready to hop off the neighborhood streets and onto the trail, and you want to get them started the right way with a real-deal mountain bike that builds skills and confidence from the outset. If you're looking to teach your little one the wisdom of the trail, there's no better teaching tool than Roscoe.
The tech you get
A durable Alpha Gold Aluminum frame with a sloping top tube for added clearance, 20˝ wheels with mid-fat 2.8˝ tires for added traction and stability, a 1x8 Shimano drivetrain with a wide-range cassette for hills and technical sections, mechanical disc brakes, and loads of thoughtful details borrowed from adult MTB tech, like a closed front dropout and a tucked-in rear brake caliper so when kids drop their Roscoe it doesn't mean an automatic trip to the shop for a replacement part.
The final word
Give a kid a Roscoe and you'll make a mountain biker for life. Mid-fat tires and a wealth of kid-specific design details make this bike the perfect introduction to the trail. If your little one is ready to tag along when you hit the singletrack, this is the kid-friendly set-up that's made to build confidence, skills, and a healthy obsession with the world's greatest activity.
The Walkthrough
favorite_borderWhy you'll love it
- There's no family outing as fun as a trail session, and Roscoe is the ideal kids' bike for building great memories
- This isn't a small adult bike—it's built from the ground up for kids, by people who know exactly what works for them and what doesn't
- When you're learning to ride, simplicity is best: a 1x8 drivetrain lets kids focus on keeping the rubber side down
- The kid-specific frame geometry has a sloping top tube that makes it easier to hop on and off
- The rear brake caliper is tucked into the frame to help prevent damage from laying the bike down
How to: teach your kid to ride a bike
"Teaching your child to ride a bike should be a special experience. With the right knowledge, the right tools, and the right approach, you can build a memory that you and your child will look back on forever. This is everything you need to help your little one make a smooth transition from training wheels to a two-wheeler."
Watch the video
How to: choose a kids' bike
"Whether your little one is ready for their first bike ever or a bigger size, our guide will help you make the right choice."
Learn more
Generation A to B
During the global pandemic, kids’ bikes skyrocketed to must-have status for millions of families. What we do now to keep our kids rolling will determine the health of our future and theirs.
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Features
Alpha Aluminum frame
Trek's lightweight, high-performance aluminum is durable and rustproof.
1x drivetrain
Simple shifting is the best way to teach a kid to ride a real mountain bike.
Race-ready components
Quality components mean this bike is ready to shred the singletrack, on race day or every day.
Wider 2.8in tires
Wider tires instill confidence and control on the trail.
Specifications
*spec applies to all sizes unless otherwise noted
| Frame | Alpha Silver Aluminum, 20'' |
|---|---|
| Fork | Roscoe 20'' alloy |
| Hub front | Formula DC-20, alloy, 6-bolt, 100mm ThruSkew |
|---|---|
| Hub rear | Formula DC-2241, alloy, 6-bolt, Shimano 8/9/10 freehub, Boost141, 5mm QR |
| Rim | 20'' alloy, 28-hole, schrader valve |
| Tire | Chen-Shin, 20x2.80'' |
| Shifter | Shimano Altus M315, 8 speed |
|---|---|
| Rear derailleur | Shimano Tourney TX80 |
| Crank | Alloy, 32T steel chain ring w/guard, 127mm length |
| Bottom bracket | Sealed cartridge |
| Cassette | SunRun cassette, 11-34, 8 speed |
| Chain | KMC Z8.3, 8 speed |
| Pedal | Kids' 9/16'' |
| Saddle | Kids' 20'' size, padded |
|---|---|
| Seatpost | Bontrager alloy, 27.2mm, 12mm offset, 250mm length |
| Handlebar | Bontrager alloy, 31.8mm, 15mm rise, 580mm width |
| Grips | Kids' Kraton |
| Stem | Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 60mm length |
| Headset | VP 1-1/8'', semi-Integrated |
| Brake | Tektro MD-M280 mechanical disc, 160mm rotor |
| Brake lever | Kids' alloy brake lever, black |
| Weight | 10.68 kg / 23.54 lbs |
|---|---|
| Weight limit | This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 80 pounds (36 kg). |
Sizing & Tech
The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local retailer.
Rider Height
12" wheel
86.0 - 102.0 cm
2'9.9" - 3'4.2"
16" wheel
99.0 - 117.0 cm
3'3.0" - 3'10.1"
20" wheel
114.0 - 132.0 cm
3'8.9" - 4'4.0"
24" wheel
130.0 - 150.0 cm
4'3.2" - 4'11.1"
26" wheel
146.0 - 160.0 cm
4'9.5" - 5'3.0"
All measurements provided in cm unless otherwise noted.
| Wheel size | B — Seat tube angle | D — Head angle | E — Effective top tube | F — Bottom bracket height | H — Chainstay length | J — Trail | K — Wheelbase | L — Standover | M — Frame reach | N — Frame stack |
|---|---|---|---|---|---|---|---|---|---|---|
| 20" kids' | 72.0° | 70.0° | 44.5 | 23.5 | 36.3 | 4.8 | 86.3 | 51.8 | 28.8 | 48.3 |