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Race calibrated for out-of-the-box performance, carburettors have changeable emulsion jets for infinite tuning, idle feed restrictors, anodized metering blocks and base plates (billet base plates on 4150 series), and dual inlet fuel bowls with built-in oversized sight windows for easy float adjustments.
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| Part No. | Description | Price | Buy | | HL0-80672 | 4500 ULTRA DOM 1050 CFM | $1,293.72 |  | HL0-80673 | 4500 ULTRA DOM 1150 CFM | $1,496.42 | | HL0-80674 | 4150 ULTRA HP 650 CFM | $1,077.92 | | HL0-80675 | 4150 ULTRA HP 750 CFM | $1,088.44 | | HL0-80676 | 4150 ULTRA HP 950 CFM | $1,114.37 | |
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