Description
Features
- Designed for its specific application, taking into account several critical parameters including; cam profiles, harmonics, natural frequency of the springs, valvetrain mass, required pressure, wire stress, fatigue life, and engine rpm
- Progressively wound springs using Kobe super-clean, chromium silicon(CrSi) based wire that is heat treated and shot peened
- Complete set for one engine
- Made in the USA
| Position | Notes | |||
|---|---|---|---|---|
| 1958-1979 | Harley-Davidson | XLCH | - | - |
| 1972-1983 | Harley-Davidson | XLH1000 | - | - |
| 1959-1971 | Harley-Davidson | XLH900 | - | - |
| 1960-1971 | Harley-Davidson | Sportster 900 XL | - | - |
| 1977-1978 | Harley-Davidson | XLCR Cafe Racer | - | - |
| 1977-1978 | Harley-Davidson | XLT | - | - |
| 1983 | Harley-Davidson | XLX 1000 | - | - |
| 1957-1959 | Harley-Davidson | XL | - | - |
| 1979-1983 | Harley-Davidson | XLS Roadster | - | - |
| 1957-1958 | Harley-Davidson | Sportster 900 XLH | - | - |
| 1979 | Harley-Davidson | Café Racer XLCR | - | - |
| 1957 | Harley-Davidson | Sportster 900 XLCH | - | - |
