Yokomo FA-19021ST FANTOM HELIX RS SPEC Edition 21.5T Titanium Shaft Race Motor  [FA-19021ST]

Yokomo FANTOM HELIX RS Spec: Race-Proven Speed and Control

The Yokomo FANTOM HELIX RS Spec Motor has become a popular choice among RC racers thanks to its balance of speed and precise engineering. Built to meet ROAR requirements, the design improves rotor balance, case stability, and introduces a refined stator layout for consistent on-track performance. Whether you race in stock classes or tune for club events, the HELIX RS Spec delivers predictable results.

Dual Balance Rotor and Stator Engineering

The core innovation is the dual balance rotor, which stabilizes rotation and improves throttle response. Combined with a high-efficiency stator layout, this setup boosts torque and RPM while keeping energy use efficient. The titanium shaft option, provided in Japan, helps reduce stalling through tight turns and improves durability under race stress.

Tuneable Rotor Choices and Durable Build

The HELIX RS Spec offers three rotor lengths for track tuning: RSR 24mm, RS 25mm (standard), and RST 26mm, giving you clear options to alter acceleration and top speed. The redesigned collector ring and silver-plated solder tabs are aimed at holding up under sustained high RPM operation.

For racers focused on consistent lap times and tuning flexibility, the Yokomo FANTOM HELIX RS Spec Motor is a strong candidate that pairs modern rotor technology with a serviceable platform for setup changes.