Permanent fitment record · FM-024

Does 31.8 mm Direct Mount Stem fit Sur-Ron Light Bee X?

Yes, with modification. 31.8 mm Direct Mount Stem on Sur-Ron Light Bee X fits only with the documented modification.

Manufacturer-listed evidence, last reviewed Jul 31, 2026.

Prickly Motorsports · K-1002-DMSTEM-31.8

Fits with modification

Bike configuration: Sur-Ron Light Bee X with compatible direct-mount fork crown and 31.8 mm handlebar
Evidence: Manufacturer-listed
Required hardware: 31.8 mm handlebar, required headset spacers, and the included M5/M6 stem hardware
Last reviewed: Jul 31, 2026

The manufacturer requires fork-tube trimming when replacing the stock stem. This is not a bolt-on stock-cockpit installation.

Sources and review history

This answer is limited to the exact configuration above. Fitment Map reviewed the linked evidence on Jul 31, 2026.

Compatibility research—not a safety certification.

Follow the manufacturer’s instructions and use a qualified technician for safety-critical work.