YRX 12 Silicone Diaphragm for Pitching Damper - YOKYX40O by Yokomo  [YOKYX40O]

Silicone diaphragm for YRX 12 pitch damper

The Yokomo YOKYX40O silicone diaphragm serves as the flexible barrier inside the YRX 12 pitching damper, controlling the movement of air and oil to shape initial pitch damping and short-term response under acceleration and braking on 1/10 on-road models.

Silicone construction offers steady rebound and resilience compared with worn original parts, keeping pitch behavior predictable without changing shock oil or springs. This item is an aftermarket component intended for radio-controlled models only, not for real vehicles.

Replacing the diaphragm is a routine maintenance step: remove the damper cap, extract the old membrane, fit the new diaphragm ensuring it seats correctly, and reassemble. Verify the seal and keep contaminants away from the sealing surfaces to avoid early wear.

In handling setup, diaphragm selection is a subtle tuning lever. A firmer membrane will reduce front-end dive and sharpen transients, whereas a softer membrane increases compliance. Use diaphragm swaps with oil and spring adjustments for best balance.