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Bill's Pipes SA-4 Slip-On Exhaust Yamaha WR250F 2003-2006

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This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

Bill's Pipes SA-4 Slip-On Exhaust Yamaha WR250F

The Bill's Pipes SA-4 slip on muffler offers the best bang for your buck if you are looking for instant horsepower and torque gains. The SA-4 slip on replaces your heavy and restrictive muffler, giving you a lighter, much better performing exhaust all while retaining your stock head pipe. Simply put, the SA-4 cannot be matched when it comes to price, craftsmanship, and overall looks.


  • Lightweight brushed aluminum muffler
  • TIG welded reinforced muffler bracket
  • 304 Stainless steel mid pipe
  • Black powder coated stainless steel end tip
  • Increased horsepower and torque gains throughout the entire power band
  • Removable screen-type spark arrestor included
  • Hand-crafted in the USA

Note: Images are for reference only, exhaust will vary per make and model.

This Product Fits:
WR250F 2003, 2004, 2005, 2006
Product Style RevZilla Item # Manufacturer Product # Availability
Stainless Steel/Aluminum/Stainless Steel 1206793 41-YW2503 Out of Stock


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