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Manley 11272-8 Gen II Race Flo LS Intake Valves 2.125in Head .3125in Stem

(1999-2006 GMC Sierra)

Manufacturer

Picture for manufacturer Manley

Part Number

11272-8
5 reviews
Sale Price

$377.90

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Product Details

Featuring a 2.125-inch head diameter and a .3125-inch stem diameter, these valves deliver the precision flow characteristics and durability demanded by serious performance and racing engine builders.

Key Features:

  • Head Diameter: 2.125 in.
  • Stem Diameter: .3125 in.
  • Material: NK-842 stainless steel alloy for high-strength intake valve performance
  • Chrome Stems: Hard-coated chrome stems for superior wear resistance and reduced friction
  • Hardened Tips: Heat-treated valve tips for extended service life under high-rpm operation
  • Swirl Polished Underhead: Fully machined and swirl-polished underhead area promotes optimal airflow
  • Race Flo (R/F) Profile: Gen II underhead geometry engineered for maximum flow with minimal restriction

Manley Race Series Gen II valves are engineered for bracket racing, drag racing, oval track, and high-performance street applications operating below 8,000 RPM. The NK-842 stainless intake material offers superior tensile strength and fatigue life compared to conventional EV-8 (21-4N) alloy valves, making them an ideal upgrade for boosted, high-compression, or high-horsepower LS engine builds.

Products specifications

Fits

1999-2006 GMC Sierra

Everything arrived well packaged and in good order... It was shipped promptly, but hey, no accounting for the snow storm in the NW... I think UPS calls it an "act of God"... Thanks

Super pricing, fast shipments, good selection they have it all.

Excellent prices on all the items I have searched and very fast and reasonable shipping.

Ordered Monday, delivered Thursday - just as promised. Best price among all reputable on-line parts dealers. Saved at least a third off the most popular dealers.

Great selection and fast shipping. Not to meantion the lowest prices anywhere on the net.

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