This 1/12-scale part is a front lower A-arm spring supplied by Yokomo under model R12-10LHS and designated hyper soft for R12/GT series use. It is intended for RC chassis tuning rather than full-size applications.
The spring serves as a front suspension element for R12/GT series cars and offers a softened rate to raise compliance at the front, aiding management of front grip and body roll on slow transitions and over fine track irregularities.
Installation overview: the spring mounts on the lower A-arm spring seat of the front suspension on supported R12/GT chassis. Refer to the chassis manufacturer's recommended disassembly for the front end when replacing springs, and verify spring seating and travel after fitting.
Tuning role: fit the hyper soft lower A-arm spring when you require a more compliant front response to small bumps or a slight reduction in initial turn-in bite; tune damper oil and anti-roll bar settings alongside the spring to reach the target handling balance.
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