Description
ROAR-winning performance for 1/12 scale racing
The S12HV-RSP was designed for one job: to deliver connected steering feel and repeatable precision in 1/12 competition, where small changes in response translate directly into lap time. This is the same platform trusted in ROAR National Championship-winning builds.
Smooth, fast transit speed where it matters
In 1/12, the car rewards momentum and clean corner arcs. The S12HV-RSP uses a super smooth coreless motor tuned to provide a slightly faster transit speed than the most common 1/12 racing servo baseline-helping the car respond quickly without feeling edgy.
Precision and “connected” steering feel
This servo is built around details that matter on high-grip carpet and asphalt:
• Ultra narrow 1us deadband spacing for improved precision and on-center feel
• Crisp and quiet operation for consistent response run after run
• Very low power consumption to keep your electronics stable
Optimized gearing for enhanced corner flow
The lightweight special-alloy metal gear train uses an optimized ratio intended to improve corner flow-helping the car carve cleaner arcs and stay settled through direction changes.
Built for modern race electronics (HV + Sanwa SHR)
The S12HV-RSP supports 6.0-8.4v HV operation and is compatible with Sanwa SHR mode (and normal speed mode across radio types). Finished with stealth all-black wiring, a 25T spline, and a rigid composite upper/lower case with CNC aluminum center case.







