Comp Cams Designs XD-A Adjustable Pushrods for Improved Performance


Comp Cams is a leader in valvetrain technology as they continuously improve and expand upon their product offerings. Their latest addition to their line are the XD-A adjustable pushrods that are designed to reduce weight and improve accuracy. These game changing pushrods offer you a way to accurately set lash or pre-load while using non-adjustable rocker arms.


The XD-A pushrods have a top section that in 2” inside a wider section with one or two shims captured in between. They are currently only offered for GM LS engines, with more applications coming soon. These are proven to handle 9,000+ RPM in solid roller LS engines, so get yours now! Learn more about them in the official release below.

Official Release:

COMP Cams® XD-A Adjustable Pushrods Reduce Weight, Improve Accuracy

COMP Cams® introduces a game-changing method for accurately setting lash or pre-load while using non-adjustable-style rockers. The patent-pending XD-A™ Adjustable Pushrods incorporate a top section that slides two inches inside a wider bottom section, with one or two shims captured in-between. These pushrods won the Best New Performance – Racing Product Award during the 2016 SEMA Show. They are currently available for GM LS engines with more popular applications coming soon.

Proven to 9,000-plus RPM in solid roller LS applications, the system provides a 90-percent increase in bending stiffness for enhanced valve train stability. It also allows for lightening of a rocker arm system by 30-plus grams on the backside, by removing the adjuster and required support area for threads and seating. The use of lighter rockers (such as the COMP Cams® SPR™ Radius Tip Rocker Arms) with XD-A™ Adjustable Pushrods allows higher RPM to be achieved by creating a much more dynamically stable valve train system.

The pushrods are designed especially for engines with low-mass rocker arms and a light valve train, with drop-in fitment in LS engines. They can be adjusted over a range of .172″ in .004″ increments with shims, sold in sets of 16 by thickness or as a 240-piece set containing all available thickness options. Top sections are available in 0/200″ increments for coarse adjustment. The pushrods work with hydraulic and solid roller camshafts.

Quick Facts:

• Drop-in fitment in GM LS engines
• Can be adjusted over a range of .172″ in .004″ increments
• 90% increase in bending stiffness
• Excellent dynamics with lightweight rockers

About COMP Cams

Founded in 1976 and based in Memphis, TN, COMP Cams® has become the automotive performance aftermarket’s “Absolute Leader in Valve Train Technology.” Our mission is to produce the highest-performing products possible, provide superior customer service and lead the industry in technological development. Additional information about COMP Cams® and its products can be found at or by calling 1.800.999.0853. You can also visit us on Facebook (, Twitter (, Instagram ( and YouTube (

Features and Benefits:

  • Allows for Accurately Setting the Pre-Load While Using Non-Adjustable Rockers
  • Won Best New Performance Racing Products Award at 2016 SEMA Show
  • Made to Handle More than 9,000 RPM
Source :

Comp Cams

Elizabeth is a hardcore horsepower enthusiast with unmatched intensity for making things faster and louder. She wakes up for power and performance and only sleeps to charge up for the next project that’s heading to the track. From autocross to drag racing, Elizabeth is there with you, so stay tuned for her unique perspective on horsepower news, builds, tech info, and installs — with her, it’ll never be boring!


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