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Children’s 20" bike for ages 6–9 and a height of 115–135 cm, weight 9.6 kg, microSHIFT derailleur, Tektro rim brakes, child’s height 110–135 cm.
Detailed Description
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 MachineChildren’s 20" bike for ages 6–9 and a height of 115–135 cm, weight 9.6 kg, microSHIFT derailleur, Tektro rim brakes, child’s height 110–135 cm.
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Rock Machine RIFF Jr 20 kids’ bike Gloss Limerock Grey is a children’s mountain bike designed for riding on cycle paths and light off-road terrain. It’s built around a durable aluminum frame and a simple drivetrain for basic gear shifting. With its spec, it targets the affordable segment for regular rides with kids.
The frame is made from 6061-T6 aluminum and is heat-treated for higher strength while keeping weight low. The design is MTB-inspired, with an emphasis on stability and easy handling on unpaved surfaces. The rigid aluminum fork with custom tubing reduces maintenance needs and keeps the front wheel tracking precisely. The seatpost diameter is 27.2 mm, making it easier to dial in the fit for a child’s riding position.
Drivetrain: The microSHIFT DS45-7R shifter works with 7 speeds and a microSHIFT RD-M21SS rear derailleur. The Shimano CS-HG200-7 cassette has a 12–28 range, and the bottom bracket is a Thun Ibex 120 mm, BSA.
Brakes: The brakes are Tektro J310 rim brakes with mechanical actuation. The disc-free setup simplifies servicing and reduces the risk of bending a rotor during handling.
Wheels and tires: The wheels are 20" with Stars J19SD rims with 20 holes. Rubena Scylla 20 × 1.9" tires are paired with One1 hubs with quick releases front and rear.
Cockpit: One1 Alloy MTB AL-153BT handlebars and a One1 MAS-MD60368 Alloy stem form a basic MTB cockpit. A Selle Royal Junior saddle is complemented by a One1 Alloy seatpost and VELO grips.
The aluminum frame and rigid fork give the bike direct steering response and stable tracking on gravel. The 20 × 1.9" tires boost confidence on softer ground and help absorb small bumps. The 7-speed gearing covers a typical pace on the flats and gentler climbs without complicated operation. Rim brakes rely on clean rim surfaces, so regular checks of the braking tracks are important.
This bike is intended for kids transitioning to a multi-speed drivetrain and riding a mix of cycle paths and dirt roads. It’s well suited to family rides and first longer routes, where you’ll appreciate simple servicing and durability. Compared to kids’ MTBs with disc brakes, it focuses on lower maintenance requirements and easier operation.
EAN: 8592842219594
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
Aluminum 6061-T6, heat-treated
Aluminum, custom tubing
Rubena Scylla 20 × 1.9"
Stars J19SD, 20 holes
One1 KTA55F, M9×100 mm, QR; One1 KTAZ2R, M10×130 mm, QR
Sapim Galvanized Black
microSHIFT DS45-7R
microSHIFT RD-M21SS
Wheel Top SXB4BL-MS
Shimano CS-HG200-7 (12–28)
Thun Ibex 120 mm, BSA, shell 68 mm
KMC Z8.3
VP Components 229, platform
One1 Alloy MTB AL-153BT
One1 MAS-MD60368 Alloy
VELO
Rim brake Tektro J310
Selle Royal Junior
One1 Alloy, 27.2 mm
Aluminum Alloy
Grey
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 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…
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Für Versand nach Deutschland, besuchen Sie bitte Rock Machine RIFF Jr 20 Kinderfahrrad Gloss Limerock Grey
Für Versand nach Österreich, besuchen Sie bitte Rock Machine RIFF Jr 20 Kinderfahrrad Gloss Limerock Grey
Chcesz dostarczyć towar do Polski? Sprawdź Rock Machine RIFF Jr 20 rower dziecięcy Gloss Limerock Grey
Chcete doručit zboží do České republiky? Prohlédněte si Rock Machine RIFF Jr 20 dětské kolo Gloss Limerock Grey
Chcete doručiť tovar na Slovensko? Pozrite si Rock Machine RIFF Jr 20 detský bicykel Gloss Limerock Grey
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