Boyesen's air intake products are designed to help riders fine-tune their machine to achieve a specific power delivery. We take a 2020 Yamaha YZ250 and combine it with six different Boyesen products and an FMF exhaust system. Take a seat and get comfy because we dive deep into each and every test and include a full rundown on how each product changed the characteristics of the 2020 YZ250 two-stroke.

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