OTK Tony Kart Caster Pill Kit It gives the kart more

It gives the kart more front grip

2× Aluminum Conical Washers

and better power delivery

and 50mm internal diameters to fit almost any kart

and trackside mechanical support

OTK Tony Kart Caster Pill Kit It gives the kart moreSilicon Valley Karting Caster Pill Kit A complete kit designed for precise kart setup and fine tuning under different track conditions. Includes: Caster adjustment, rear bumper tool, and caster pill cover Compatibility: Fits all OTK karts with 10 mm king pins; includes swappable inserts to adapt to 8 mm king pins This set includes caster adjustment options DOT 1, DOT 2, DOT 4, DOT 5, and a blank (zero pill) Note: DOT 3 (default caster) is not included