Keith Black Pistons Spiral Locks RRN-81-4PK for Shovel Evolution & Sportster
$40.26
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Keith Black Pistons Spiral Locks RRN-81-4PK for Shovel Evolution & Sportster
$40.26
Secure your piston assembly with precision-engineered replacement piston pin spiral locks from Keith Black Pistons. Designed specifically for reliable wrist pin retention, these spiral retaining rings maintain critical stability under high engine stress and operating loads.
Built to fit Keith Black Shovelhead, Evolution, and Sportster pistons, this package provides a direct replacement solution sold as a set of four. Ensure dependable engine performance and prevent pin migration with durable, high-integrity hardware.
Key Features
| Brand | Keith Black Pistons |
| Manufacturer Part Number | RRN-81-4PK |
| Product Type | Piston Pin Spiral Locks |
| Package Quantity | 4 |
| Compatible Engine Types | Harley-Davidson Shovelhead, Evolution, Sportster |
| Piston Compatibility | Keith Black Pistons |
| Weight | 0.1 kg |
Compatibility
Compatible with Keith Black pistons for Harley-Davidson Shovelhead, Evolution, and Sportster engine applications.
How to use
Slightly stretch the unsprung retainer approximately 1.3 cm to 1.9 cm across both ends to aid installation. Place one end into the piston pin retaining groove, then use a small screwdriver to work around the pinhole in a circular pattern, ensuring the spiral lock is completely seated inside the groove to prevent unwinding.
Frequently asked questions
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