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445.99 €

Rock Machine RIFF Tr 20 kids bike Gloss Limerock Grey

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Our Code: 803.2026.20201
Discount 9%

Children’s 20" mountain bike, lightweight aluminum frame, rigid fork, Tektro disc brakes, 1x7 gearing, for children aged 6–10, weight 9.85 kg.

Detailed Description
Rock Machine

Rock Machine follows the rule: Fun first, and then more fun. From humble garage beginnings in 1994 to the present, you can see Rock Machine bikes on World Cup tracks, but mainly on trails where Rock…

More about the brand Rock Machine
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Discount 9%

Children’s 20" mountain bike, lightweight aluminum frame, rigid fork, Tektro disc brakes, 1x7 gearing, for children aged 6–10, weight 9.85 kg.

Detailed Description
In stock
An expedition is possible tomorrow (delivery options)
Price Including VAT 445.99 € Recommended Retail Price: 495.45 € -9%
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Description

Some parts of this page are translated automatically, so please excuse any imperfections.

Rock Machine RIFF Tr 20 kids’ bike Gloss Limerock Grey is a children’s mountain bike designed for light terrain, bike paths, and everyday rides. It’s built around an aluminum frame and a simple seven-speed drivetrain for easy operation. It sits in the affordable kids’ MTB category, where functional components and durable construction matter most.

Frame and geometry

The frame is made from 6061-T6 aluminum with heat treatment, which supports stiffness and durability while keeping material weight low. The design targets kids’ MTB use, where stability and easy handling are key. The front fork is a rigid aluminum unit with Alloy Custom Tubing legs. This combination reduces maintenance needs and keeps steering precise on rough surfaces.

Components

Drivetrain: microSHIFT DS45-7R shifting runs 7 speeds with a microSHIFT RD-M21SS rear derailleur. The Shimano CS-HG200-7 cassette offers a 12–28-tooth range, paired with a KMC Z8.3 chain.

Brakes: The Tektro MDM 280 brake system is chosen for easy modulation and consistent performance. The controls suit children’s hands and typical trail use.

Wheels and tires: The wheels use Stars J19SD rims with 24 holes and Sapim Galvanized Black spokes. Rubena Cheetah 20 × 2.10 tires provide grip on gravel and stability in light terrain.

Cockpit: One1 Alloy MTB AL-153BT handlebars are paired with a One1 MAS-MD60368 Alloy stem. A Selle Royal Junior saddle and a One1 Alloy 27.2 mm seatpost address kids’ ergonomics and straightforward adjustment.

Ride characteristics

The aluminum frame transfers pedaling power directly and holds its line on paved surfaces. The rigid aluminum fork improves steering precision and reduces bobbing under load. The 20 × 2.10 tires add confidence over roots and gravel while still rolling efficiently. The seven-speed range with a 12–28-tooth cassette is aimed at maintaining a smooth pace on gentle climbs.

Who it’s for

The RIFF Tr 20 is for kids who ride independently and want a children’s MTB for trails, forest paths, and riding to school. You’ll appreciate it on family rides where simple handling and durability make the difference. In its class, it relies on a rigid fork and a basic derailleur drivetrain instead of a multi-speed front chainring setup.

Key specifications

  • Frame: 6061-T6 aluminum, heat-treated
  • Fork: rigid aluminum, Alloy Custom Tubing
  • Shifters: microSHIFT DS45-7R, 7 speeds
  • Rear derailleur: microSHIFT RD-M21SS
  • Cassette: Shimano CS-HG200-7, 12–28 teeth
  • Brakes: Tektro MDM 280
  • Wheels and tires: 20", Rubena Cheetah 20 × 2.10
  • Hubs: One1, quick release; M9 × 100 mm and M10 × 135 mm

EAN: 8592842219587

Size chart

Children's Bikes

size models height (cm)
20" Blizz 20 / Riff Tr 20 / Thunder 20 / Riff Jr 20 / Catt Jr 20
110 - 130
24" Blizz 24 / Riff Tr 24 / Thunder 24 / Riff Jr 24 / Catt Jr 24
120 - 145
27" XS Thunder 27 / Riff Jr 27 / Catt Jr 27 / Blizz 27 / Riff Tr 27 size XS
135 - 155
27" S Thunder 27 / Riff Jr 27 / Catt Jr 27 / Blizz 27 / Riff Tr 27 size S 140 - 160
29" XS Thunder 29 size XS 140 - 160
29" S Thunder 29 size S 145 - 165

Manufacturer: BIKE FUN International s.r.o., Areál Tatry 1445/2, 74221 Kopřivnice, info@bikefunint.com, www.rockmachinebikes.com/en-en

Specifications

Frame Set
Frame

Aluminum 6061-T6, heat treated

Fork

Alloy Custom Tubing

Wheels
Tires

Rubena Cheetah 20 × 2.10

Rims

Stars J19SD, 24 holes

Hubs

One1 KTTD8F, M9 × 100 mm, quick release; One1 KTTD2R, M10 × 135 mm, quick release

Spokes

Sapim Galvanized Black

Drivetrain
Shifters

microSHIFT DS45-7R (right)

Rear Derailleur

microSHIFT RD-M21SS

Crankset

Wheel Top SXB4BL-MS

Cassette

Shimano CS-HG200-7 (12–28T)

Chain

KMC Z8.3

Pedals

VP Components 229, platform

Components
Handlebars

One1 Alloy MTB AL-153BT

Stem

One1 MAS-MD60368 Alloy

Grips

VELO

Brakes

Tektro MDM 280

Saddle

Selle Royal Junior

Seatpost

One1 Alloy; 27.2 mm

General Information
Frame Material

Aluminum Alloy

Colour

Grey

Activity

Mountain Biking, Cycling With the Kids

The wheel manufacturer reserves the right to change the wheel specifications without any reason. In exceptional cases, the delivered product may differ from the specified specifications and images to improve the availability or functionality of the wheel.

Rock Machine

Rock Machine follows the rule: Fun first, and then more fun. From humble garage beginnings in 1994 to the present, you can see Rock Machine bikes on World Cup tracks, but mainly on trails where Rock…

More about the brand Rock Machine

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Contact us.

Ask a question
+43 144 20070 Mon - Fri: 10:00 am to 15:00 pm
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Für Versand nach Deutschland, besuchen Sie bitte Rock Machine RIFF Tr 20 Kinderfahrrad Gloss Limerock Grey

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