Compare bikes: Compare Btwin Poply 540 (2020) vs. Specialized Riprock Coaster 12 (2020) - Findabike

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

Hi-Ten steel, 76mm

Hi-Ten steel

The lowered frame geometry makes it easier to get on and off the bike.The steel frame is robust.

Specialized A1 Premium Aluminum

Front: Bolt-on, 95mm spacing, loose ball bearings, 16h - Rear: Coaster brake, bolt-on, loose ball bearings, 110mm spacing, 16T cog, 16h

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

Stainless, 14g

Front: Rhythm Lite, 30 TPI, wire bead, 12x2.3" - Rear: Rhythm Lite, 30 TPI, wire bead, 12x2.3"

Two V-Brake pads for effective braking.These brakes are composed of callipers that exert more or less pressure on the rim to slow or stop the rotation of the wheels.

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

BMX, steel, 10-degree backsweep, 4-degree upsweep, 65mm rise, 470mm width, 22.2mm

Specialized, slip-on

A saddle carefully designed to adapt to the morphology of children. It is equipped with a plastic section on the rear (a bumper) to protect against any impacts.

Specialized Kids'

Steel, 22.2mm

Nylon platform w/ reflectors