S&S CYCLE Electrical Compression Release Unit 90-4914

Starting a high-displacement or forced-induction engine shouldn't feel like wrestling a compression spring. The S&S CYCLE Electrical Compression Release Unit eliminates the grueling hand-crank struggle by automatically venting cylinder pressure the moment you hit the start button, making cold starts effortless and reducing strain on your starter motor. This is essential hardware for any serious builder running a custom big-inch or supercharged powerplant.

The unit engages and disengages electronically—no mechanical manipulation required—giving you the convenience of modern starting technology without compromising the raw performance of your build. Installation is straightforward with a complete kit provided, and the included components are engineered for reliability and durability in demanding applications.

• Manufacturer: S&S CYCLE
• Part Number: 90-4914
• Type: Electric compression release
• Operation: Button-activated engagement
• Installation: Bolt-on kit
• Special socket: Available separately
• Compatibility: Aftermarket heads only
• Origin: Made in USA
• Application: High-compression engines
• Function: Reduces starter load