51mm Alloy Tube - 1 Metre Length ML4-1650 is an essential upgrade to

is an essential upgrade to optimize power by eliminating a critical flow restriction in the intake tract

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51mm Alloy Tube - 1 Metre Length ML4-1650 is an essential upgrade to51mm Alloy Tubes Technical Details Outside diameter 51mm Essential to racecar and kitcar builders, and those installing their own intercooler conversions. Straight 1 metre lengths of aluminium alloy tube in a range of popular sizes. The tube is cut to 1 metre length, ends de burred, but otherwise in its "raw" state. Not polished or swaged. All tube is 16gauge, equivalent to 1. 5mm wall thickness. Grade is HE9. Drawing for reference only.