This 1/12-scale accessory is a front lower A-arm spring supplied by Yokomo under model R12-10LHS and specified as hyper soft for use on R12/GT series setups. It is intended for RC chassis tuning, not for full-size vehicles.
The spring is described as a front component for R12/GT series cars and is listed as compatible with specific chassis models; it provides a softer spring rate to increase compliance at the front end, which helps adjust front-end grip and body roll characteristics in low-speed transitions and over small surface irregularities.
Installation overview: this spring mounts on the lower A-arm spring seat of the front suspension on the supported R12/GT chassis. Follow the chassis manufacturer’s standard disassembly steps for the front suspension when replacing springs, and check spring seating and travel after fitment.
Tuning role: use the hyper soft lower A-arm spring when you need the front to respond more compliantly to small bumps or to slightly reduce initial turn-in bite, pairing it with appropriate damper oil and anti-roll bar settings to find the desired balance.
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