Pitching Damper End Adaptor for YR-X12 - Yokomo YX-40C  [YOKYX40C]

Design and fitment

This shock cap and end adaptor is intended for the YR-X12 pitching damper assembly and functions as either a replacement cap or an adaptor that sets the damper's top mount and terminal position within the shock tower or linkage arrangement.

The component is supplied as a direct-fit for YR-X12-designated dampers; installers should confirm proper thread engagement and seating before final assembly. Typical fitting requires basic shock teardown, aligning the cap to the damper body, and verifying that the piston and spacer stack run freely through the full travel.

In tuning terms, changing the cap or end adaptor affects end geometry and mounting height, which influences how the pitching damper contributes to chassis pitch control. Use this adaptor when altering end fittings, swapping damper types, or refining linkage geometry to achieve the pitch characteristics you want.

Installation notes

• Disassemble the shock to remove the original cap, then replace with the YX-40C cap/adaptor, confirming correct thread engagement and seating.
• Cycle the shock through its entire travel after reassembly to ensure there is no binding at the revised end position.
• If end geometry is modified, re-evaluate damper stroke and spring preload to suit the vehicle setup.