- Heat-treated for strength and durability
- Equal or surpass original equipment
- Made in the U.S.A.
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 1954-1956 | Harley-Davidson | KH V Twin 55 | |
| 1955-1956 | Harley-Davidson | KHK V Twin 55 | |
| 1978-1985 | Harley-Davidson | Roadster XLS | |
| 1977-1978 | Harley-Davidson | Sportster 1000 Touring XLT | |
| 1972-1979 | Harley-Davidson | Sportster 1000 XLCH | |
| 1972-1985 | 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 | |
| 1984-1985 | Harley-Davidson | XLX 61 | |