Bill's Pipes SA-4 Header

This product is bike-specific
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Bill's Pipes SA-4 Header

Turn your SA 4 slip on into a full system with the SA 4 ultra-durable stainless steel head pipe. The SA 4 head pipe has a larger diameter than stock, which equates directly to more power.


  • TIG welded 304 stainless steel construction
  • Larger diameter than stock allowing for more flow
  • Maximum clearance and seamless fit
  • Increased horsepower and torque gains throughout the entire power band
  • Compatible with Bill's Pipes SA-4 slip on exhausts only
  • Made in the USA

Fitment Notes & Exceptions

Note: Compatible with Bill's Pipes SA-4 slip on mufflers only, will not fit oem or any other brand of muffler.

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We show real-time availability on this product page when you select the size/color item you want.  Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.

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If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

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