Specialized Riprock Coaster 20 INT

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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.

The A1 premium aluminum frame is lightweight and built to withstand the tough use by kids, while the geometry features an ultra-low standover that makes it easy for your little ones to fit on and grow with the bike.
Steel coaster brake is a reliable, easy to use brake perfect for safe stops and awesome skids.
20x2.3" Rhythm Lite tires deliver tons of traction, comfort, stability, and fun over all types of terrain.

Specifications

FRAMESET

Seat Binder: Bolt-type, 28.6mm

Fork: Hi-Ten steel

Frame: Specialized A1 Premium Aluminum

COCKPIT

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

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

Saddle: Specialized Kids' Henge

Grips: Specialized, slip-on

SeatPost: Steel, 25.4mm

BRAKES

Rear Brake: V-brake w/ tool-less reach adjust brake lever

Front Brake: V-brake, linear pull

DRIVETRAIN

Bottom Bracket: Feimin FP-B701, 68MM

Crankset: Hi-Ten steel, 114mm

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

Chainrings: Steel, 36T

WHEELS & TIRES

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

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

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

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

Inner Tubes: Schrader valve

Spokes: Stainless, 14g

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

ACCESSORIES

Pedals: Nylon platform w/ reflectors

WEIGHT

Weight: 10.6 kg (23 lb, 5.9 oz)

Weight Size: One Size

Geometry

	20
Crank Length	114
Handlebar Width	560
Stem Length	37
Saddle Width	143
Seatpost Length	220
Head Tube Angle	70
Wheelbase	858
Front Center	476
Reach	315
Top Tube Length, Horizontal	449
BB Drop	42
Fork Rake	23
Trail	71
Stack	413
Chainstay Length	386
Standover Height	477
Head Tube Length	80
Seat Tube Angle	72
Seat Tube Length, BB Center to Top	250

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Specialized Riprock Coaster 20 INT

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