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Roscoe 20


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 tyres, 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 Mum, Dad or an older sibling. Fit for riders 114-132 cm (45-52˝) tall.

[2022] Model 1051434

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It's right for you if...

Your little shredder is ready to hop off the neighbourhood 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 Aluminium frame with a sloping top tube for added clearance, 20˝ wheels with mid-fat 2.8˝ tyres for added traction and stability, a 1×8 Shimano drive train 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 calliper 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 tyres 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.

Why you'll love it

The Walkthrough

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Wider 2.8" tyres

Wider tyres instil confidence and control on the trail.

Alpha Aluminium Frame

Trek’s high-performance Alpha Aluminium is shaped and tuned for unmatched ride quality.

1x Drive Train

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 Tyres

Wider tyres instill confidence and control on the trail.


*spec applies to all sizes unless otherwise noted

FrameAlpha Gold Aluminium, 20″
ForkRoscoe 20″ alloy
Hub frontFormula DC-20, alloy, 6-bolt, 100 mm ThruSkew
Hub rearFormula DC-2241, alloy, 6-bolt, Shimano 8/9/10 freehub, Boost141, 5 mm QR
Rim20″ alloy, 28-hole, schrader valve
TyreChen-Shin, 20×2.80″
ShifterShimano Altus M315, 8-speed
Rear derailleurShimano Tourney TX80
CrankAlloy, 32 T steel chain ring w/guard, 127 mm length
Bottom bracketSealed cartridge
CassetteSunRun cassette, 11-34, 8-speed
ChainKMC Z8.3, 8 speed
PedalKids’ 9/16″, platform
SaddleKids’ 20″ size, padded
SeatpostBontrager alloy, 27.2 mm, 12 mm offset, 250 mm length
HandlebarBontrager alloy, 31.8 mm, 15 mm rise, 580 mm width
GripsKids’ Kraton
StemBontrager alloy, 31.8 mm, Blendr-compatible, 7-degree, 60 mm length
Head setVP 1-1/8″, semi-integrated
BrakeTektro MD-M280 mechanical disc, 160 mm rotor
Brake leverKids’ alloy brake lever, black
Weight10.68 kg/23.54 lb
Weight limitThis bike has a maximum total weight limit (combined weight of bicycle, rider,and cargo) of 36 kg (80 lb).

Sizing & Tech

Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on are for general comparison purposes only. To find your perfect fit, visit an authorised retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.

All measurements provided in cm unless otherwise stated.

Bike Tech

2022 Roscoe 20


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