Description:

We have used a lot of Callies CompStar rods for our naturally aspirated LS builds. Callies recently introduced their new Compstar Extreme rods and we've been using them in many of our boosted engines. Because we use a lot of them, we make it a point to buy in quantity and keep them in stock. 

Designed and produced with engineering and finishing advancements, CompStar connecting rods have what it takes to make your engine build trouble free and your finished product reliable. Produced from heat treated and stress relieved 4340 material, CompStar rods are fully machined with a shot blasted Stress Riser free surface. Every detail of this highly stressed component has been carefully analyzed to maximize repeatability and dependability.

CompStar 4340 steel H-beam connecting rods feature ARP 2000 bolts carefully positioned for maximum pan rail clearance with additional stroker clearance designed into each rod. Other features include large outboard mating face contact area, fully detailed and prepped parting lines and bearing tab pockets. All rods are consistantly final sized within a .0002" tolerance. Weight matched sets are within 2 grams.

Compstar Extreme

The next step in the Compstar line up. Specifically designed for power adder applications. The Compstar Xtreme utilizes the same proven 4340 material and ARP 2000 or L19 fasteners. Strength is added by thickening up the flanges of the H beam and a reduced depth of cut towards the center of the rod. Then non-essential weight is taken out of the beam to help keep the overall weight of this rod in check. Watch the video to see a set of these Compstar Extreme rods at work in one of our Whipple supercharged 427's.  https://youtube.com/shorts/yPkFC95XUFU?feature=share

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