SI Valves Swirl-Polished Valves DSM 4G63

These replacement valves from SI Valves feature 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. Fully swirl polished. Chromed stems and Stellite tips.

Ideal for tough racing applications of all kinds.

Also available in 1mm OVERSIZE for ultimate in flow potential. Extra head machining is required for oversized valves.

Sold as a set of eight. Specify intake or exhaust, and size.

Fits all 1990-1999 turbo DSM (Eclipse/Talon/Laser) cars.