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Biltwell Thunder Risers
  • Biltwell Thunder Risers - Black
  • Biltwell Thunder Risers - Black
  • Biltwell Thunder Risers - Polished
  • Biltwell Thunder Risers - Polished

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Video Review

Biltwell Thunder Risers Videos

Biltwell Thunder Risers

A large number of late-model Harley owners who prefer tall handlebars convinced Biltwell to develop the Thunder risers. This riser’s one-piece design increases riser stiffness and clamping power on rubber-mounted top trees, and is a boon to performance and style on practically any motorcycle. Bold branding is an uncommon sight on most of Biltwell's motorcycle parts, however, the Thunder Risers are an exception.


  • Investment-cast
  • CNC-machined stainless steel
  • 5/16” x 18 t.p.i. stainless steel bar clamp hardware
View Fitment Notes & Exceptions

Fitment Notes & Exceptions

This is a universal fit part; it may or may not fit without modification.

  • Rigid- and rubber-mounted top trees with 3.5” (89mm) center-to-center mounting holes only
  • The holes on your trees must accept 1/2” O.D. hardware
  • Lower clamps are threaded to accept 1/2"-13 mounting hardware (not included)
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Biltwell Thunder Risers 5 5 1 1
One of the nicest parts on my bike I have never found a bilateral brat I don't like. The guys over there continue to knock it out of the park. The riser is a solid pice with nice style cues. I have it mounted to a 35mm HD front end with a set of bolt well zed bars. It looks and performs exceptionally. No slip even when taking it on some fire roads. I recho end this for anyone in search of a quality riser. September 28, 2015
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Biltwell Thunder Risers
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Product Style RevZilla Item # Manufacturer Product # Availability
Black 889793 ER175SSBK/ER-175-SS-BK In Stock: Ships within 24 hours
Polished 889792 ER175SSPS/ER-175-SS-PS In Stock: Ships within 24 hours