ROCK CRAWLER / PERFORMANCE NORMALLY ASPIRATED
Designed for the experienced trail rider who wants power throughout the rpm range. Requires BC spring & retainer kit. ECU and head work for optimal gains.
If 1999-2005, requires older timing kit from 1996-98.
| Adv Dur | 280°/286° |
| Dur @ .050 | 220°/226° |
| Valve Lift (1.6:1) | .493"/.510" |
| Valve Lift (mm) | 12.52/12.95 |