Keith Black Pistons Dome Top Pistons KB266.020 for Big Twin 1984-1999
$597.31
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Keith Black Pistons Dome Top Pistons KB266.020 for Big Twin 1984-1999
$597.31
Upgrade your engine's performance with Keith Black Dome Top Pistons, engineered specifically for Big Twin 1984-1999 models with Evolution engines. Crafted from a premium hypereutectic alloy containing 16% silicon, these pistons offer a low thermal expansion rate that allows for tighter piston-to-cylinder clearance and exceptional stability in air-cooled applications.
Delivering a potent 10.5:1 compression ratio with an 80cc head chamber volume, this precision piston set optimizes combustion efficiency and power output. Each comprehensive kit includes two pistons, high-grade rings, wrist pins, and clips for a complete, reliable engine rebuild.
Key Features
| Brand | Keith Black Pistons |
| MPN | KB266.020 |
| Product Type | Dome Top Pistons |
| Piston Material | Hypereutectic 16% Silicon Alloy |
| Bore Size | 89.4 mm |
| Stroke | 108 mm |
| Oversize | +0.51 mm (+.020 in.) |
| Compression Ratio | 10.5:1 (with 80cc Chamber Volume) |
| Engine Compatibility | Big Twin Evolution |
| Model Year Range | 1984-1999 |
| Product Weight | 1.2 kg |
Highlights
- High-silicon (16%) hypereutectic alloy ideal for air-cooled engines
- Low thermal expansion enables tighter piston-to-cylinder clearances
- 10.5:1 compression ratio with standard 80cc combustion chambers
- Sized for 89.4 mm bore with 108 mm stroke (+0.51 mm oversize)
Compatibility
Fits Harley-Davidson Big Twin models equipped with the Evolution engine from model years 1984 through 1999.
What's included
- 2 x Keith Black Hypereutectic Dome Top Pistons
- 1 x Set of Piston Rings
- 2 x Wrist Pins
- 4 x Retaining Clips
Downloads
Frequently asked questions
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