KPMI Engine Kit 20-22550 for Harley-Davidson Shovelhead 80 1978-1983
$453.00
Skip to product information
KPMI Engine Kit 20-22550 for Harley-Davidson Shovelhead 80 1978-1983
$453.00
Upgrade your cylinder head overhaul with the KPMI Engine Kit, engineered for Harley-Davidson Shovelhead 80" models from 1978 to 1983. Designed to double service life compared to OEM components, this comprehensive kit features premium Black Diamond stainless steel intake and exhaust valves finished with a durable Black Nitroneg coating.
Equipped with heat-treated steel retainers and high-performance valve springs supporting up to 10.5 mm (0.415 in) valve lift, this package provides everything required for reliable valvetrain rebuilding. All components meet or exceed original equipment standards to deliver optimal longevity and performance under rigorous engine demands.
Key Features
| Brand | KPMI |
| Manufacturer Part Number | 20-22550 |
| Product Type | Engine Valve Train Kit |
| Valve Type | Intake / Exhaust |
| Retainer Material | Heat-Treated Steel |
| Valve Material | Black Diamond™ Stainless Steel |
| Coating | Black Nitroneg |
| Maximum Valve Lift | 10.5 mm |
| Installed Height | 34.9 mm |
| Seat Pressure | 129 lb (58.5 kg) |
| Open Pressure | 272 lb (123.4 kg) |
| Intake Head Diameter | 49.5 mm |
| Intake Stem Diameter | 9.6 mm |
| Intake Tulip Angle | 23° |
| Intake Overall Length | 98.7 mm |
| Exhaust Head Diameter | 44.5 mm |
| Exhaust Stem Diameter | 9.6 mm |
| Exhaust Tulip Angle | 29° |
| Exhaust Overall Length | 96.8 mm |
| Weight | 1.1 kg |
Highlights
- Complete cylinder head overhaul package for Harley-Davidson Shovelhead 80"
- Engineered to double valvetrain service life over OEM components
- Premium Black Diamond stainless steel valves with Black Nitroneg coating
- Heat-treated steel retainers and high-grade spring assembly
- Supports valve lift up to 10.5 mm (0.415 in)
Compatibility
Compatible with 1978–1983 Harley-Davidson Shovelhead 80" motorcycle engines.
What's included
- KPMI Complete Valve Spring Kit
- KPMI Black Diamond Stainless Steel Intake and Exhaust Valves
- Heat-Treated Steel Retainers
- Keepers and Seals (where applicable)
Downloads
Frequently asked questions
|