Keith Black Pistons Std Dome Top Pistons KB920C.STD for Big Twin 1984-1999
$727.16
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Keith Black Pistons Std Dome Top Pistons KB920C.STD for Big Twin 1984-1999
$727.16
Engineered for exceptional strength and performance, these standard dome top pistons deliver a 9.5:1 compression ratio with 85cc head chambers. Manufactured from premium forged 4032 alloy with 11% silicon, they offer superior resistance to cracking under demanding high-compression operating conditions.
Fully machined for precise tolerances, each complete kit includes two pistons, rings, wrist pins, and clips for a seamless top-end rebuild. They provide reliable power delivery and long-lasting durability for your V-Twin engine.
Key Features
| Brand | Keith Black Pistons |
| Manufacturer Part Number | KB920C.STD |
| Piston Type | Dome Top |
| Piston Size | Standard |
| Material | Forged 4032 Alloy |
| Bore | 88.8 mm |
| Stroke | 108 mm |
| Compression Ratio | 9.5:1 |
| Head Chamber Volume | 85 cc |
| Clearance Requirement | 0.025 mm wider piston to wall clearance |
| Product Weight | 1.2 kg |
Highlights
- Forged 4032 alloy construction with 11% silicon for maximum crack resistance
- 9.5:1 compression ratio optimized for 85cc combustion chambers
- Fully machined precision standard bore profile
- Complete dual-cylinder rebuild kit
Compatibility
Fits Harley-Davidson Big Twin Evolution models from 1984 to 1999 with 88.8 mm standard bore cylinders.
What's included
- 2 x Keith Black Pistons
- 1 x Complete Ring Set
- 2 x Wrist Pins
- 4 x Retaining Clips
Downloads
Frequently asked questions
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