S&S CYCLE Throttle Body - 58mm 124" 170-0345

A properly sized throttle body is critical for maximizing airflow and throttle response on any high-displacement engine. The S&S 58mm design delivers a direct bolt-on solution that maintains stock appearance while eliminating flow restrictions common to OEM components. This is essential if you're running a 124" engine and want consistent, predictable throttle modulation without the headaches of custom fabrication.

The sealed stainless steel throttle shaft with dual roller bearings eliminates play and air leaks that can cause rough idle and hesitation. The one-piece throttle body/manifold design integrates seamlessly with your existing fuel rail, sensors, and throttle cables—no adapters or rewiring required.

• 58mm bore diameter
• Stainless steel throttle shaft
• Dual roller bearings
• One-piece design
• Hardened steel flanges
• Compatible with stock sensors
• Bolt-on installation
• Black powder coat finish
• Made in U.S.A.
• Requires S&S Stealth air cleaners
• MPN: 170-0345