Swap in this tall velocity stack set to move the LSXHR 103mm tunnel ram manifold's power band down where it is easier to use on the street.

LSXHR Tall Velocity Stack Set Details:

• Tall stack length shifts torque and horsepower into the lower RPM operating range
• Fits LSXHR 103mm tunnel ram-style manifolds on LS3 and LS7 engines
• Sold as a complete set of 8 stacks

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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