- 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
- Spring Lift 0.480"
Kit Includes:
- 4x CrSi Valve Springs
- 4x H.T. Steel Retainers
- 4x H.T. Steel Basewashers
- 4x H.T Steel Keeper (Pairs)
NOTE: May require machining of valve guides for special seals.
NOTE: May require "R"-style valves to achieve correct install height.
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 1978-1983 | Harley-Davidson | Roadster XLS | |
| 1977-1978 | Harley-Davidson | Sportster 1000 Touring XLT | |
| 1972-1979 | Harley-Davidson | Sportster 1000 XLCH | |
| 1972-1983 | Harley-Davidson | Sportster 1000 XLH | |
| 1970-1971 | Harley-Davidson | Sportster 883 XLCH | |
| 1957-1959 | Harley-Davidson | Sportster XL | |
| 1958 | Harley-Davidson | Sportster XLC | |
| 1958-1959 | Harley-Davidson | Sportster XLCH | |
| 1960-1969 | Harley-Davidson | Sportster XLCH55 | |
| 1958-1971 | Harley-Davidson | Sportster XLH | |