TransDigm's pricing power on critical sole-source parts plus disciplined capital recycling is why its multiple has held for a decade. About 90% of sales are proprietary and three-quarters sole source, with high-margin aftermarket at 55% of revenue; organic sales grew 13% last quarter. About $2.6B of free cash flow funds bolt-on deals and buybacks, with leverage at 5.8x. At about 18 times EBITDA after an 18% drop, cooling engine aftermarket growth should narrow the gap and rerate it. x.com x.com x.com x.com x.com x.comÂ