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Pushrod TechHigh Energy™MagnumHi-Tech™Semi-FinishedCheckingToolsXD-A Adjustable
XD-A Adjustable
COMP Cams® Pushrods

XD-A Adjustable

  • Top section slides 2" inside a wider bottom section with shims captured in-between to allow adjustability
  • Proven to 9,000 RPM drop-in fitment in GM LS engines
  • Can be adjusted over a range of .172" in .004" increments
  • 90% Increase in bending stiffness for enhanced valve train stability
  • Excellent dynamics with lightweight rockers

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. 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 and work with hydraulic and solid roller camshafts. Available for GM LS engines with more popular applications coming soon.

PUSHROD SETPUSHROD/SHIM KITSHIMS

Part # Adjustable Length Description Lifter Side Diameter Rocker Side Diameter
Pushrod Set
896805-16   7.320" - 7.552 GM LS XD-A™ Adjustable Pushrod 3/8" 5/16"
896806-16   7.530" – 7.762" GM LS XD-A™ Adjustable Pushrod 3/8" 5/16"
896807-16   7.740" – 7.972" GM LS XD-A™ Adjustable Pushrod 3/8" 5/16"
896808-16   7.950" – 8.182" GM LS XD-A™ Adjustable Pushrod 3/8" 5/16"
896809-16   8.160" – 8.392" GM LS XD-A™ Adjustable Pushrod 3/8" 5/16"

*Can be run with guide plates in older stud-mounted applications

PERFORMANCE
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