SRAM X4 3x8 Speed Trigger Shifter - Front - 22.2mm Bar Clamp - 3 Speed Heavy/Bulky the valve cores are removable

the valve cores are removable

The Mac-Ride suits kids approximately 2-5 years old (they need the strength and coordination to hold themselves upright and ability to follow instructions to hold onto the handlebars)

By threading in to your crank

Pros: Rated to ASTM F1952-00 (DOWNHILL) and ASTM F2032-06 (BMX)

SRAM X4 3x8 Speed Trigger Shifter - Front - 22.2mm Bar Clamp - 3 Speed Heavy/Bulky the valve cores are removableThe X4 offers the proven SRAM 2 lever trigger shifting performance at a more affordable price point. Featuring their proven ergonomics and award winning 1: 1 actuation, these trigger shifters set the standard for entry level performance and value. Features: The X4 offers the proven SRAM 2 lever trigger shifting Featuring proven ergonomics and award winning 1: 1 actuation Specs: Shifter Style Trigger Cable pull ratio 1: 1 Speeds 3,8 & 3x8