SI Performance Stainless
RPM - RON'S PRECISION MACHINE, INC.
Swirl polished - Import cars & Trucks
69 E. 580 N.
Santaquin, Utah 84655
1-801-754-5338 or Toll free 1-866-700-5877 e-mail
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Hours: 10:00 AM to 5:00 PM Monday - Friday MT (Utah) For Internet
Call toll free to purchase at: 1-866-700-5877 (U.S. only)
International orders (outside the U.S.) Click
Engine Rebuild Kit
and Parts Online Catalog
"Swirl Polished" Performance
This model features an undercut
stem in the head area. In addition to reducing the valve weight
(which provides benefits in opening rate and RPM limits) the
radius of the head is such that is significantly improves air/fuel
flow. This model enjoys great success when used with stock heads,
as well as modified versions. Many available with Black Knight
coating. Fully swirl polished stailess steel. Chromed stems and
Ideal for tough racing applications of all kinds.
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