00:00a wheel spacer that cools your brakes i know what you're thinking that sounds like a marketing line
00:04a flat ring of aluminum sitting behind your wheel somehow lowering brake temperatures so today we're
00:11going to do this properly no slogans just the design the airflow the physics and the honest
00:18limits because this thing does something real but it doesn't do everything here's the problem first
00:24your brakes convert speed into heat and that heat sits in a tight sandwich rotor hub wheel on a
00:31wrangler crawling down a long trail grade riding the brakes at low speed airflow is at its worst exactly
00:38when heat is at its peak anything that moves air through that sandwich earns our attention
00:45now look at this spacer not a flat disc the outer face carries pedal-shaped cooling slots machined
00:51all the way through the back face is stepped multiple levels of pockets that cut weight
00:56and open up air volume behind the wheel the sidewall is knurled which increases surface area
01:02and the whole body is forged 6061 t6 aluminum the same alloy family your wheels are made from
01:09chosen because it conducts heat well and keeps strength at temperature here's the part you can't
01:15see with the naked eye the spacer bolts to the hub and spins with the wheel those pedal slots
01:21act like centrifugal veins as the assembly rotates they pull hot air out of the pocket between the hub
01:27and the wheel and push it outward away from the rotor cooler air gets drawn in behind it it's the
01:33same principle as a vented rotor moving air through a space that would otherwise trap heat the effect is
01:39modest but it's continuous every mile every rotation on this 2021 wrangler these are 25 millimeters
01:48front and rear hub centric on the 71.5 millimeter center bore torque to 140 newton meters on the spacer
01:56nuts 176 on the wheels the studs tuck into the wheel pockets no cutting nothing permanent and now the
02:04spacer sitting behind the wheel is doing something the old flat ones never did so do active cooling
02:10spacers actually cool your brakes yes with limits physics not magic a real airflow path a real alloy
02:19a modest but continuous effect have you ever felt brake fade on a trail or a long downhill tell me
02:25your setup in the comments if this kind of no hype breakdown is useful hit like subscribe the full
02:32install in the description see you out there
