FANTOM HELIX RS SPEC EDITION Rotor Upgrade Yokomo FA-18613ST Titanium Shaft  [FA-18613ST]

FANTOM HELIX RS SPEC EDITION rotor overview

This FA-18613ST is the Yokomo titanium-shaft rotor variant built for the FANTOM HELIX RS SPEC EDITION motor family and noted as JMRCA certified in the original release. It serves as a direct replacement rotor assembly for that motor platform and is aimed at 1/10 on-road competition where regulated output limits apply.

From a mechanical standpoint the titanium shaft improves surface hardness and resists corrosion better than standard steel shafts, helping maintain concentricity and lowering wear rates during race use. This upgrade concentrates on mechanical durability and consistent timing rather than modifying electrical or power characteristics.

Installation notes: inspect rotor endplay and bearing fit when you assemble, ensure correct rotor orientation for the HELIX RS SPEC EDITION motor, and recheck pinion-to-spur clearance after refit. Use appropriate hand tools and avoid forcing components to prevent damage to the motor housing or bearings.

Service and setup guidance: because this rotor preserves factory motor timing and is produced to meet class rules, focus tuning on drivetrain alignment, gearing choices, and ESC settings. Check the shaft for scoring or deformation before each meeting and replace if any wear is found.

For teams running the FANTOM HELIX RS SPEC EDITION motor in regulated classes, the Yokomo FA-18613ST titanium-shaft rotor is a robust replacement aimed at mechanical reliability; always verify fitment and clearances as part of routine maintenance.