The 2019 Riprock Coaster 20 is an aluminum frame coaster bike by Specialized.
View on specialized.com
Single-speed — 1 speed
Similar bikes are easier to ride up hills than the 2019 Riprock Coaster 20.
The 2019 Riprock Coaster 20 won‘t keep up with similar bikes while riding downhill or sprinting.
Oh snap! This frame was drawn from the actual bike geometry measurements. Roll over the table below to highlight frame dimensions.
|Frame||Specialized A1 Premium Aluminum|
|Fork||Hi-Ten, 1-1/8" steerer|
|Bottom Bracket||Steel, loose ball bearings|
|Handlebar||BMX, steel, 10-degree backsweep, 4-degree upsweep, 130mm rise, 560mm width, 22.2mm|
|Saddle||Specialized Kids' Henge|
|Pedals||Nylon platform w/ reflectors|
|Crank||Hi-Ten steel, 114mm, 36T|
|Chain||KMC Z510, single-speed, anti-drop, 1/2"x1/8"|
|Brakes||V-brake w/ tool-less reach adjust brake lever|
|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|
|Tires||Rhythm Lite, 30 TPI, wire bead, 20x2.3"|