Trek Roscoe 20 (2023) Rage Red to Dnister Black Fade

SBC ID | MFG SKU - 210000070656 | 1575000

Roscoe 20 is a mid-fat kids' mountain bike designed to build confidence on the trail.

It takes cues from the adult Roscoe, but this ride was built from the ground up for kids. 2.8˝ mid-fat tires, a 1x drivetrain, and a wide-range cassette make Roscoe the ideal bike for little rippers who want to build skills and have a ridiculous amount of fun keeping up with Mom, Dad, or an older sibling.

Why you'll love it

  1. There's no family outing as fun as a trail session, and Roscoe is the ideal kids' bike for building great memories
  2. 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
  3. When you're learning to ride, simplicity is best: a 1x8 drivetrain lets kids focus on keeping the rubber side down
  4. The kid-specific frame geometry has a sloping top tube that makes it easier to hop on and off
  5. The rear brake caliper is tucked into the frame to help prevent damage from laying the bike down

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, 24˝ 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 single-track, this is the kid-friendly set-up that's made to build confidence, skills, and a healthy obsession with the world's greatest activity.

Sizing & Fit

For riders 45-52" tall. Come on into Sunshine for a fitting for your child.



Alpha Silver Aluminum, 20''


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


20'' alloy, 28-hole, schrader valve


Chen-Shin, 20x2.80''


Shimano Altus M315, 8 speed

Rear derailleur

Shimano Tourney TX80


Alloy, 32T steel chain ring w/guard, 127mm length

Bottom bracket

Sealed cartridge


SunRun cassette, 11-34, 8 speed


KMC Z8.3, 8 speed


Kids' 9/16''


Kids' 20'' size, padded


Bontrager alloy, 27.2mm, 12mm offset, 250mm length


Bontrager alloy, 31.8mm, 15mm rise, 580mm width


Kids' Kraton


Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 60mm length


VP 1-1/8'', semi-Integrated


Tektro MD-M280 mechanical disc, 160mm rotor

Brake lever

Kids' alloy brake lever, black


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).