{"product_id":"holley-step-down-leg-booster-sizes-125-135-144","title":"Holley Straight Leg Booster Sizes .125 .135 .144","description":"\u003ch4\u003e\u003cspan\u003eHolley Straight Leg Booster Sizes .125 .135 .144\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eHolley straight leg boosters are traditional venturi boosters found in standard everyday and baseline performance carburettors like the classic 600cfm \u0026amp; 350cfm models.\u003c\/span\u003eThey offer reliable signal strength, good throttle response, and cost-effective manufacturing for general street use.\u003c\/p\u003e\n\u003ch4 class=\"otQkpb\" role=\"heading\"\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003eCharacteristics and Design\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/h4\u003e\n\u003cdiv class=\"otQkpb\" role=\"heading\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eSimple shape:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Features a straight tubular leg design crossing the venturi.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eSignal strength:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Provides a moderate signal compared to stronger annular boosters or down-leg boosters.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\"\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eApplications:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Common in baseline 2-barrel (2300) and 4-barrel (4150\/4160) street\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e carburettors.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eOrifice sizes:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Available in various inner diameters (such as .125\", .135\", .144\") to tune fuel atomization and signal booster response.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/ul\u003e\n\u003cdiv class=\"Fsg96\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/div\u003e\n\u003cdiv class=\"\"\u003e\n\u003ch4 class=\"otQkpb\" role=\"heading\"\u003eComparison: Straight Leg vs. Other Boosters\u003c!--TgQPHd|||[]--\u003e\n\u003c\/h4\u003e\n\u003cdiv class=\"otQkpb\" role=\"heading\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eStraight Leg:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Best for basic street driving, offering predictable signal and easy calibration.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eDown-Leg \/ Dogleg:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Angled downward to improve high-RPM fuel flow and directional delivery in performance applications.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\"\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eAnnular:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Features a ring with multiple tiny discharge holes yielding the strongest signal at low speeds, ideal for heavy cars or large-volume intakes needing crisp low-end response\u003c\/span\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Holley","offers":[{"title":".125","offer_id":46351429894241,"sku":"HP53S-5","price":15.5,"currency_code":"AUD","in_stock":false},{"title":".135","offer_id":46351429927009,"sku":"HP53S-35","price":15.5,"currency_code":"AUD","in_stock":true},{"title":".144","offer_id":46351429959777,"sku":"HP53S-32","price":16.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0568\/2282\/5057\/files\/booster1_543123fd-4b27-478a-91a1-bf184b0c9acf.png?v=1786188672","url":"https:\/\/carbparts.com.au\/products\/holley-step-down-leg-booster-sizes-125-135-144","provider":"Carb Parts","version":"1.0","type":"link"}