Description
If you’re running an aftermarket flame arrestor on your Keihin carb, this adapter is non-negotiable. The WSM 38-42mm adapter bridges your OEM setup to high-flow clamp-on filters, ensuring proper airflow while maintaining safe engine operation. It’s the critical link between performance carburetor upgrades and quality intake filtration.
Built to OEM specifications with included mounting hardware, this adapter installs in minutes and pairs seamlessly with popular Prok and Blowsion filters.
- Keihin carburetor compatible
- 38-42mm bore range
- Silver anodized finish
- Accepts 2-3/4″ I.D. flanges
- Works with Prok filters
- Works with Blowsion filters
- Flame arrestor upgrade required
- Bolt-on installation
- Mounting bolts included
- MPN: 006-665









