KO RSx4S - One10X Type-T - With selector 4S

The KO Propo RSx4S One10X Type‑T with Selector 4S (SCH-KO30148) is a premium low‑profile servo engineered for smooth cornering response and low current consumption. Preloaded with five model memories tailored for popular Tamiya categories, it lets you switch servo characteristics quickly using the included Servo Model Selector for 4S or via EX‑NEXT telemetry/expansion units. A light blue aluminium heatsink middle case complements its refined internals for consistent performance and thermal stability.

Key Features

• Low‑profile performance servo focused on smooth, linear steering feel and efficiency
• Five preset model memories for quick characteristic changes
• Hard‑anodised aluminium gears and hard servo gear shaft
• Coreless motor with dual ball bearings for precision and durability
• Aluminium heatsink middle case in light blue
• Black cable with gold‑plated connector
• Serial compatible and HCS compatible
• Made in Japan

Preset Model Memories

• Model 1: Mini‑chassis RWD (e.g. M06/M08), DD machines (e.g. F104), reproduction machines
• Model 2: Mini‑chassis FWD (e.g. M05/M07), WR/GF series, Lunch Box, etc. (default)
• Model 3: Resin chassis touring car (TA/TB), 2WD buggy (e.g. TD2)
• Model 4: Carbon chassis touring car (e.g. TA07MS, TRF420/TB‑EVO), 4WD buggy (e.g. TD4/DB)
• Model 5: High‑speed touring cars

Model memories are preset data registered in the servo. RSx4S also allows fine adjustment of parameters to suit driving style.

Specifications

• Torque/Speed @7.4V: 12.5 kg‑cm, 0.09 s/60°
• Torque/Speed @6.0V: 11.8 kg‑cm, 0.10 s/60°
• Dimensions: 40.5 × 26 × 21 mm (low profile)
• Weight: 50.5 g
• Servo lead: 180 mm
• Operating voltage: 6.0–7.4 V (LiPo, LiFe, Ni‑MH)

Suggested Compatibility

• Suitable use cases suggested by the presets include Tamiya mini chassis (FWD/RWD), DD platforms, WR/GF series, touring cars (resin and carbon chassis), and 2WD/4WD buggies as noted in the model list above.

What’s Included

• KO Propo RSx4S One10X Type‑T Low‑Profile Servo
• Servo Model Selector for 4S

Adjustment Methods

• Included Servo Model Selector for 4S
• Via EX‑NEXT telemetry or expansion unit