Description
Stock reed valves are the silent bottleneck in your KTM’s intake system—they restrict flow and cost you power at every RPM. The Boyesen dual-stage reed design eliminates this limitation by maintaining optimal valve timing across your entire operating range, delivering measurable gains from cold start through peak acceleration. If you’re serious about extracting maximum performance from your 250 or 380, this is where the gains begin.
Technical Specifications:
- Dual-stage reed design
- Optimized flow velocity
- Laboratory flow-tested
- Fits KTM 250/380
- MPN: 686
- Bolt-on installation
- Improved throttle response
- Enhanced low-end torque
- Increased top-end power
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