How to Match a Shift Boot Collar to Your POCO Shift Knob
By ACUITY Instruments: Performance Automotive Products | Published: 2026-10-15
Category: How-to Guides
POCO shift knobs only accept ACUiTY POCO collars. Learn how to identify your knob, pick the right collar, and install it without damaging the boot.
Quick answer
If you run a POCO or POCO-Insulated shift knob, the only collar that fits is an ACUiTY POCO collar. Start by confirming which knob you have, then choose the collar finish you want, then install it with the supplied zip ties. A satin red aluminum shift boot collar, for example, is a direct fit on any POCO knob but will not work on other brands.
Why POCO collars are not universal
Most aftermarket shift boot collars are designed around a threaded nut that clamps the boot to the lever. POCO knobs use a different system: the collar threads onto the knob itself or clips into the knob's built-in collar, depending on the model. That means a collar sold for a generic M10x1.5 shifter will not thread or seat correctly on a POCO knob, and a POCO collar will not fit a non-POCO knob. The catalog listing for the satin red aluminum collar states this plainly: it is for POCO and POCO-Insulated shift knobs only and is not compatible with any other shift knobs or boot collar accessories. Treat that as your first filter before you buy anything.
Identify your POCO knob before ordering a collar
There are two POCO families to check. The standard POCO Low-Profile Shift Knob has a built-in shift boot collar that already connects the boot to the knob. The POCO Insulated Low-Profile Shift Knob also ships with a detachable aluminum shift boot collar. If you already own either knob, you may not need a separate collar at all — you only need a replacement or a different finish. If you are adding a collar to a POCO knob that came without one, or you want to change the look, the satin red aluminum collar is the accessory to order. Check the knob's product page or the underside of the knob for the POCO marking; if you see a different brand name, stop here.
What the collar actually does
A POCO collar is not just cosmetic. It holds the top of the shift boot against the base of the knob so the boot does not sag, bunch, or expose the shift lever. The collar also lets you remove or adjust the knob without pulling the boot loose. On the satin red aluminum collar, the finish is anodized and laser etched, and the body is 6061 aluminum. That matters because anodizing resists the oils and UV exposure that dull bare aluminum, and the laser etching will not rub off the way a sticker or paint fill can. The collar includes three lay-flat zip ties for installation, so you do not need to source hardware separately.
Step-by-step collar fitment and installation
- Confirm your knob is a POCO or POCO-Insulated: Look for the POCO marking on the knob or check your order history. The satin red collar is only for ACUiTY POCO and POCO-Insulated knobs; it will not fit other brands or generic M10x1.5 knobs. If you are not sure, do not order yet. A wrong collar will not thread and returns cost time.
- Decide whether you need a collar at all: Both the standard POCO Low-Profile and the POCO Insulated knob come with a built-in or detachable shift boot collar. If yours is intact and you like the finish, you already have what you need. Order the satin red collar only if yours is missing, damaged, or you want the red finish. Check the boot connection first; a loose boot is sometimes a seating problem, not a missing collar.
- Test-fit the collar on the knob before touching the boot: Thread or seat the collar onto the knob with the boot still in place. It should start by hand and sit flush without wobble. If it binds immediately, stop — you may have the wrong collar or cross-threaded it. Hand-tight only at this stage. Forcing a collar is the most common way to damage the threads.
- Position the boot and secure it with the supplied zip ties: Slide the boot up so its top edge sits inside the collar's groove. Use the three lay-flat zip ties included with the collar to hold the boot to the collar or lever as designed. Trim the tails flush so they do not catch on your hand or the console. Lay-flat ties sit smoother than standard ties; if you use your own, keep the heads on the side away from your leg.
- Check clearance and shift through the gears: With the collar installed, run the shifter through all gears. The collar should not contact the console, and the boot should not pull tight or bunch. On a low-profile POCO knob that sits 3-4mm above the lever, clearance is tight, so listen for rubbing. If the boot pulls tight in any gear, loosen the ties and reposition before you drive.
- Recheck tightness after the first drive: Heat and vibration can settle the collar and boot. After one drive, confirm the collar is still hand-tight and the zip ties have not shifted. Re-trim any tie tail that has worked loose. A two-minute recheck prevents a boot that works its way out weeks later.
POCO collar and knob facts
- Satin Red Aluminum Shift Boot Collar for POCO Shift Knobs: Satin red anodized finish with laser etching on a 6061 aluminum body; compatible with all ACUiTY POCO and POCO-Insulated shift knobs and includes 3 lay-flat zip ties. The anodized finish resists wear and the included zip ties mean you can install the collar the same day it arrives without a trip to the hardware store.
- POCO Low-Profile Shift Knob in Satin Teal Finish (M10X1.5): POCO Low-Profile Shift Knob sits only 3-4mm above the top of the threaded shift lever and typically offers 5%-10% less throw than with a stock knob; it has a built-in shift boot collar. If you already run this knob, you may only need a collar for a finish change, not for fitment — and the low height means the collar sits close to the boot, so check clearance before adding thickness.
- POCO Insulated Low-Profile Shift Knob in Red (M10X1.5): POCO Insulated Low-Profile Shift Knob uses an acetal outer shell to prevent the knob from feeling too hot or cold, with a stainless steel core and a detachable aluminum shift boot collar. The detachable collar on this model can be swapped for the satin red collar if you want a different look, but the insulated shell changes how the collar seats, so test-fit before tightening.
