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Stub Stack - 1½ For Hs4, Hif4, Hif38 Carbs-billet Aluminum

Stub Stack - 1½ For Hs4, Hif4, Hif38 Carbs-billet Aluminum

Stub Stack - 1½ For Hs4, Hif4, Hif38 Carbs-billet Aluminum

Stub Stack - 1½ For Hs4, Hif4, Hif38 Carbs-billet Aluminum

Part No: SS51
SALE Price $33.96
Was: $39.95
You save: $5.99
K&N velocity stack, for 1 1/2" SU carb . With all the talk about how to spend more money on performance it only seems natural that perhaps optimizing what you have is the basic first step. The addition of a "stub stack" within your aftermarket filter is one of the cheapest ways to improve performance. The principle is that the more air you get into the chamber, the denser the charge, the greater the chances of increased horsepower!
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4 out of 5 stars
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Most Helpful Customer Reviews
 
Work great, some fitment issues
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Ordered the stub stack after reading Vizards book, and seeing how much it improves flow into the carb while still fitting a regular air filter. The fit and finish is great, only thing I noticed is that with my generic K&N type cone air filter it hits the outer edge making me have to trim a bit of the rubber seal along the edge of the filter to fit it. Other than that very happy, a good buy.
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