Keith Black Pistons Dome Top Pistons KB305.010 for Big Twin 1984-1999
$597.31
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Keith Black Pistons Dome Top Pistons KB305.010 for Big Twin 1984-1999
$597.31
Upgrade your engine's performance with Keith Black Pistons engineered specifically for Big Twin Evo engines. Constructed from a high-grade hypereutectic alloy with 16% silicon content, these pistons provide a low thermal expansion rate that allows for tighter piston-to-cylinder operating clearances in demanding air-cooled environments.
Designed to deliver a 9.6:1 compression ratio with an 80cc head chamber volume, this +.010in. oversized piston kit ensures dependable power delivery and extended durability for street or performance builds.
Key Features
| Brand | Keith Black Pistons |
| Manufacturer Part Number | KB305.010 |
| Piston Style | Dome Top |
| Oversize | +.010 in. |
| Bore Size | 89.1 mm |
| Stroke | 108 mm |
| Compression Ratio | 9.6:1 (with 80cc chamber volume) |
| Material | Hypereutectic Alloy (16% Silicon) |
| Engine Compatibility | Harley-Davidson Big Twin Evolution (1984-1999) |
| Estimated Weight | 1.8 kg |
Highlights
- Cast hypereutectic alloy with 16% silicon content
- Designed for air-cooled Big Twin Evolution engines
- Low thermal expansion enables tighter piston-to-cylinder clearance
- Delivers 9.6:1 compression ratio with 80cc cylinder heads
Compatibility
Compatible with Harley-Davidson Big Twin Evolution (Evo) engines from 1984 through 1999.
What's included
- 2 x Hypereutectic Dome Top Pistons
- 1 x Piston Ring Set
- 2 x Wrist Pins
- 1 x Set of Wrist Pin Clips
Downloads
Frequently asked questions
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