- Moroso Throttle Return Spring Kit, 2300/4100 Holley Series
- The answer to your throttle return spring linkage problems if you're running a 2300/2305 series two-barrel or 4150/4160 series 4-barrel Holley® or Road, Speed, Race Demon™ carburetor
- Designed and built rugged enough for competition, yet its polished chrome finish is suitable for the finest show car
- Includes one set of heavy and one set of light springs