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Riprock Coaster 20

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Riprock Coaster 20

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We deliver! Just say when and how.

Traction, control, confidence, and fun—the Riprock 20 Coaster is the perfect bike for your kid to start hitting the trails with. And with the simple coaster brake design, safety and fun aren't mutually exclusive anymore.

While there are many notable features that make the Riprock awesome, it's the 2.3-inch tires that provide a high degree of, well, shred-ability—delivering exceptional traction, control, and confidence for riding rough, off-road sections and city streets alike. And when you combine the big tires with sturdy 20-inch wheels, an easy-to-use coaster brake that all but eliminates the threat of the dreaded endo, and a single-speed setup, you have the perfect mountain bike to get your little Ripper out on the trail.

Technical Specifications

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Frameset

Frame

Specialized A1 Premium Aluminum

Fork

Hi-Ten steel

Seat Binder

Bolt-type, 28.6mm

Cockpit

Saddle

Specialized Kids' Henge

SeatPost

Steel, 25.4mm

Stem

Die Cast Aluminum, 37mm length, 10 degree, 22.2 clamp diameter

Handlebars

BMX, steel, 10-degree backsweep, 4-degree upsweep, 130mm rise, 560mm width, 22.2mm

Grips

Specialized, slip-on

Brakes

Rear Brake

V-brake w/ tool-less reach adjust brake lever

Drivetrain

Chain

KMC Z510, single-speed, anti-drop, 1/2"x1/8"

Crankset

Hi-Ten steel, 114mm

Chainrings

Steel, 36T

Bottom Bracket

Feimin FP-B701, 68MM

Accessories

Pedals

Nylon platform w/ reflectors

Wheels & Tires

Rims

20" alloy, 16mm depth, 21mm internal width

Front Hub

Steel, bolt-on, 100mm spacing, loose ball bearings, 36h

Rear Hub

Coaster brake, bolt-on, loose ball bearings, 110mm spacing, 18T cog, 36h

Spokes

Stainless, 14g

Front Tire

Rhythm Lite, 30 TPI, wire bead, 20x2.3"

Rear Tire

Rhythm Lite, 30 TPI, wire bead, 20x2.3"

Inner Tubes

Schrader valve

* Weights based on production painted frames as pictured. Actual weights will vary based on colorway, frame size, and component variation. Specifications are subject to change without notice.

Geometry

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20
Crank Length114mm
Handlebar Width560mm
Stem Length37mm
Saddle Width143mm
Seatpost Length220mm
Seat Tube Length, BB Center to Top250mm
Top Tube Length, Horizontal449mm
BB Drop42mm
Chainstay Length386mm
Seat Tube Angle72°
Head Tube Angle70°
Fork Rake23mm
Trail71mm
Front Center476mm
Wheelbase858mm
Standover Height477mm
Head Tube Length80mm
Reach315mm
Stack413mm
Geometry

Rider Reviews

  • 4.9
  • 11 Reviews

best bike we've got

My kids all fight over this bike 12,9, and 7. its lightweight and rolls smooth. low seat height makes it comfortable for the kids to feel confident. specialized 16" is awesome too, we have two of them but kids outgrow that one fast.


Name:
Josh

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Excellent bike and service

Excellent bike and service

Would Recommend?
Yes!

Verified Buyer

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Name:
Manuel T.

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The coolest

My daughter (7) looooves this bike! This was an upgrade from the Riprock 16 that comes with training wheels. The orange and blue color combo is amazing. I’m going to see if they have this in adult size!

Would Recommend?
Yes!

Verified Buyer

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Name:
Erin V.

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Awesome bike! Bought for my

Awesome bike! Bought for my 8 year old son who loves it. Geometry of the bike keeps his center of gravity low and stable. Big 20” tires look cool and roll over lots of obstacles. Rear hand brake is adjustable for a smaller hand size. Build quality is high end and assembly was a breeze with the included hand tools. Online purchase was delivered fast and care was taken in packaging to ensure a perfect product, scratch free.

Would Recommend?
Yes!

Verified Buyer

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Name:
Guest G.

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I’m a former bicycle mechanic

I’m a former bicycle mechanic and am very impressed with the quality and workmanship of this bicycle. I won’t mention the brand I use to work on, however, they were very sturdy bicycles but needed a lot of set up before they could be delivered to the customer. I still own one of them and have had it for over 50 years and it is still in fine shape.

Would Recommend?
Yes!

Verified Buyer

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Name:
Guest G.

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Great bike. My 7 yo

Great bike. My 7 yo loves it.

Would Recommend?
Yes!

Verified Buyer

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Name:
Guest G.

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great frame design for beginners!

great frame design for beginners!

Would Recommend?
Yes!

Verified Buyer

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Name:
Guest G.

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Great bike for my 8

Great bike for my 8 year old!

Would Recommend?
Yes!

Verified Buyer

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Name:
Guest G.

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We bought this bike for

We bought this bike for our six-year-old granddaughter. It fits her perfectly and she loves it. We particularly like the two rear-wheel brakes (coaster and hand). Great price, too.

Would Recommend?
Yes!

Verified Buyer

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Name:
Guest G.

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My 7 year old LOVES

My 7 year old LOVES his new bike! Use it daily in the City and no issues.


Verified Buyer

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Name:
Guest G.

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