Description
Shovelhead Rocker Boxes by Speed And Science ®. Billet Aluminum Rocker Box system for the Harley-Davidson™ Shovelhead models.
- Bolt-on installation for all ’66-’84 models equipped with either billet Speed And Science heads (recommended) or cast OEM heads with OEM oil supply system.
- This system provides superior fit and function vs. castings.
- EVO style shafts (included).
- Extra clearances provided for hi-lift applications.
- The Speed And Science Rocker Boxes are designed for OEM shape rockers (standard or roller type, not included in the kit).
- Two-piece construction allows for easy clearance check between moving elements.
- The design is sealed with replaceable orings for easy maintenance and longevity.
- 1.4lb weight savings (p. pair) versus castings.
- Warranty details and conditions are listed in the Installation Manuals ( Manuals download page )
















CNC workmanship is excellent, well packed and well worth the expense
Beautiful machine work, best in the business in my opinion.
Beautiful, rockers installed perfectly!
Rocker boxes add the finishing touches. Again, fits as they should and no leaks
Just beautiful. I guess I could have run my stock rocker boxes (that I spent hours polishing…. but just look at those SNS boxes… couldn’t say no! Plus, the quality & tolerances on ALL SnS products are spot on, aces!