COMP Cams XD-A Adjustable Pushrod Set

The COMP Cams XD-A Adjustable Pushrod Set is a two-piece adjustable pushrod system for performance valvetrains. It uses a top section that slides inside a wider bottom section, with shims captured between them. This lets you set pushrod length precisely without adjustable rocker arms. Use it as an engine pushrod set when you want to fine-tune valvetrain geometry.

Key Features:

• Adjustable two-piece design: The top section slides about two inches into the bottom section, with one or two shims between them to set the final length.
• Fine adjustment: Shims adjust the length over a range of .172" in .004" increments.
• Increased stiffness: COMP Cams states a 90-percent increase in bending stiffness, which helps keep the valvetrain stable.
• High-RPM capability: The system is proven to 9,000-plus RPM in solid roller applications.
• Supports lightweight rockers: Pairing the pushrods with low-mass rocker arms removes the adjuster and its thread and seating area from the back of the rocker. COMP Cams says this saves 30-plus grams, which helps the valvetrain stay stable at higher RPM.
• Camshaft compatibility: Top sections come in 0.200" increments for coarse adjustment and work with hydraulic and solid roller camshafts.
• Chromoly construction: Chromoly steel gives the pushrods strength and durability.

Pushrod shims are sold separately by thickness, or as a complete shim kit with all thickness options. Check the individual variant listing for the exact length range.

COMP Cams backs this product with a 12-month warranty.