Keith Black Pistons Dome Top Pistons KB305.005 for Big Twin 1984-1999
$597.31
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Keith Black Pistons Dome Top Pistons KB305.005 for Big Twin 1984-1999
$597.31
Upgrade your engine build with Keith Black dome top pistons engineered specifically for Harley-Davidson Big Twin Evolution engines. Cast from a high-grade 16% silicon hypereutectic alloy, these pistons offer a low thermal expansion rate that allows for tighter piston-to-cylinder operating clearances.
Designed for air-cooled applications, this complete set delivers a reliable 9.6:1 compression ratio with an 80cc combustion chamber volume. Each kit includes two pistons, matching rings, wrist pins, and clips for a thorough top-end rebuild.
Key Features
| Brand | Keith Black Pistons |
| Product Type | Pistons |
| Model Number | KB305.005 |
| Material | Hypereutectic Alloy (16% Silicon) |
| Bore Size | 89 mm |
| Stroke | 108 mm |
| Compression Ratio | 9.6:1 (with 80cc Head Chamber Volume) |
| Fitment | Big Twin 1984-1999 with Evo Engine |
| Top Style | Dome Top |
| Weight | 1.2 kg |
Highlights
- Constructed from 16% silicon hypereutectic alloy
- Delivers low thermal expansion for tighter clearances
- 9.6:1 compression ratio with 80cc chamber volume
- Engineered specifically for air-cooled V-Twin engines
Compatibility
Fits Harley-Davidson Big Twin Evolution (Evo) engines from 1984 through 1999.
What's included
- 2 x Keith Black Hypereutectic Pistons
- 1 x Piston Ring Set
- 2 x Wrist Pins
- 4 x Retaining Clips
Downloads
Frequently asked questions
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