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Riprock Coaster 20

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Riprock Coaster 20

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

Front Brake

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

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

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

  • 5
  • 3 Reviews

Good bike to start with

Good bike

Would Recommend?
Yes!

Name:
Chanda

Helpful?

Great first real bike

Started my son on a woom and when he grew out of that we got this. Fits perfect, well built, upgradeable to large handlebars/seat. He's six and he'll be riding this until he's 10 most likely. Well worth the investment.

Would Recommend?
Yes!

Name:
Kevin

Helpful?

Great bike, very well put

Great bike, very well put together.

Would Recommend?
Yes!

Verified Buyer

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Name:
Guest G.

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