Moroso throttle return spring kit for Holley 2300 2305 4150 4160 carburetors 64927

A properly functioning throttle return spring is critical for predictable throttle control and engine response, especially in competition settings where milliseconds matter. The Moroso Throttle Return Spring Kit delivers the reliability you need with dual spring options—heavy and light stainless steel sets—so you can dial in the exact throttle feel for your driving style and carburetor setup. This is a straightforward bolt-on upgrade that eliminates guesswork and improves consistency lap after lap.

Technical Specifications:

• Holley 2300, 2305, 4150, 4160 compatible
• 14-gauge steel construction
• Polished chrome finish
• Stainless steel springs included
• Heavy and light spring sets
• Carburetor base mounting
• Complete hardware included
• Installation instructions provided
• Bolt-on installation
• Competition and show car ready