S&S CYCLE Throttle Body - 58mm 111" 170-0347

If you're running an 111" engine and want measurable intake flow improvements without fabrication headaches, the S&S Cycle 58mm throttle body is the direct bolt-on solution. This one-piece design maintains stock appearance while delivering genuine performance gains—and it plays nice with your existing fuel rail, sensors, and throttle cables. You get the efficiency of a purpose-built manifold without tearing apart your engine bay.

Key Specifications:

• 58mm bore diameter
• One-piece throttle body/manifold
• Stainless steel throttle shaft
• Dual roller bearings
• Hardened steel flanges
• Black powder coat finish
• Stock sensor compatible
• Stock fuel rail compatible
• Stock throttle cable compatible
• Sealed design—zero air leaks
• Requires S&S Stealth air cleaner (sold separately)
• Made in U.S.A.
• MPN: 170-0347

Installation Note: Bolt-on design. Some S&S cylinder heads feature additional manifold surface material to accommodate stock-length manifolds on 124" engines. Verify fitment with your stock manifold before ordering if you're uncertain about compatibility.