12mm VOP Piston Set (Red) (4) by Competition Suspension

Store Availability Learn More


Frederick, MD

Unavailable In Store - Check Others
Low Price: $18.99
Back Order Add to Wish List
Out Of Stock Online
You may back order this item and it will ship when it arrives in stock.

Please Log in to receive a notification when this item arrives in stock.

$1.99 Flat Rate Shipping!
This item is eligible for $1.99 flat rate shipping Learn More

This product was added to our catalog on January 13, 2014.

This is an optional Competition Suspension Red 12mm VOP Piston Set. Competition Suspension has once again raised the bar when it comes to suspension technology and performance. CSI's VOP (Varying Oval Port) 12mm shock pistons feature some unique design elements that help to maximize both shock and vehicle performance.

CSI's VOP engineered pistons feature CSI's varying port design that was introduced to 1/8 off-road racing a few years ago and has proven to be the industry standard for maximum shock performance. CSI's VOP tapered oval port 12mm pistons provide separate damping forces for compression and rebound, depending on which way the piston is installed. CSI's 4 port VOP design provides optimum low and high speed damping, giving the racer a larger tuning window for track conditions. Due to CSI's unique design, the VOP piston reacts faster to velocity changes, improving overall traction and handling on any track surface.

CSI's 12mm VOP pistons are available in two flow rates:

  • CSI Red VOP Piston: Medium to Low bite surface. Average to rough track conditions (Outdoor). Recommended Starting Range: (37.5wt to 42.5wt)
  • CSI Blue VOP Piston (CSI-CRP-0004): High to medium bite surface. Smooth to average track conditions (Indoor). Recommended Starting Range: (27.5wt to 32.5wt)
Red VOP Piston Installation:
  • Flat side of piston should always face up