KH866 C10 Base Plate Replacement Kit for HJC HJ34/HJ34P/i30 — Direct-Fit Pivot Plates & Screws

KH866 C10 Base Plate Replacement Kit restores smooth visor operation on HJC HJ34, HJ34P and i30 helmets with a precise, durable pivot assembly.

If your helmet visor has become loose, stiff, or misaligned, the KH866 C10 Base Plate Replacement Kit is a direct-fit repair part designed to bring the visor mechanism back to factory-like performance. This kit supplies the pivot plates and mounting screws needed to replace worn or damaged base plates without altering helmet fit. It’s engineered to match the original HJC geometry so you can quickly return the visor to correct alignment and reliable opening/closing action.

How will this kit affect my visor’s performance?

Replacing worn base plates restores consistent detents and smoother travel through the visor’s opening positions. You’ll notice less wobble and a more positive stop at each click setting, which improves visibility and confidence when riding.

• Recreates original pivot geometry for accurate detents.
• Reduces visor play and unwanted movement at speed.
• Improves sealing and alignment to decrease wind noise.

Is the KH866 C10 Base Plate Replacement Kit easy to install?

Yes — the kit includes a matched pair of base plates and four screws sized for direct replacement, allowing a straightforward swap with minimal disassembly. No specialty tools are required beyond a typical small screwdriver, and clear mechanical fitment means most owners can complete the job themselves in under 20 minutes.

• Includes two base plates and four mounting screws for a full side-to-side replacement.
• Designed for bolt-on installation without modifying the helmet shell.
• Compact parts keep the visor mechanism intact during the swap.

Which helmets are compatible with this replacement kit?

The KH866 C10 kit is crafted to fit HJC helmet models HJ34, HJ34P and i30 that use the C10-style base plate and pivot system. Confirm your helmet’s part design before ordering to ensure compatibility; the kit mirrors OEM dimensions used on these HJC models.

• Engineered for HJC HJ34, HJ34P, and i30 model pivot assemblies.
• Matches original screw spacing and pivot axis for direct fit.
• Not universal — verify your helmet uses C10-style base plates.

Who should choose this part? Riders who own compatible HJC helmets and are experiencing visor wear — such as excessive play, poor detents, or difficulty removing/attaching the visor — will benefit most from this kit. It’s ideal for DIY maintenance, roadside repairs, or restoring a helmet to like-new function before resale. Motorcycle technicians and shops that service HJC models can also keep this affordable replacement on hand to quickly return helmets to proper working order.

Materials and packaging focus on durability and convenience: the base plates are manufactured from impact-resistant material designed for repeated use, and the included screws are sized to match HJC fasteners. The kit is a cost-effective alternative to full helmet replacement when the shell and visor are otherwise sound. For best results, inspect the visor pivot bushings and surrounding components during installation to ensure a complete and long-lasting repair.