GR86/BRZ Clutch Stop Stopper Bumper

If you have a GR86/BRZ 2nd Generation (2023+) w/ manual transmission, have a look underneath the dash at the OEM clutch stopper. Is it ripped to shreds? Because mine was. Turns out, the USDM guys get a crappy 1.5mm thick soft rubber pad to cushion the clutch pedal arm from the pedal bracket. 

I have machined a few of these from a urethane type material, but I was not happy with the installation process for those much harder materials. So I designed and printed one from 95A TPU.

You will need to adjust your clutch pedal after installation of this part to allow the clutch to fully disengage.

Install this part at your own risk.

Notes about the design

• The OEM rubber bumper/stopper is 1.5mm thick, very soft (50A or 70A) rubber. This option is both thicker, and harder than the OEM options. I have offered three thicknesses: 2mm, 2.5mm, and 3mm. Personally, I liked the 2-2.5mm range, but I put the 3mm up there anyway. I can always add more thicknesses if requested.

Notes about the print

• This is designed to be printed with 100% infill using 95A TPU. I used 4 walls to increase rigidity of the thin outside section.

• I printed this from Inland TPU (95A) on a stock Bambu Lab P2S. This was one of my first TPU prints, and it came out pretty good I'd say!

• The Generic TPU profile used limits the volumetric flow rate to 3.2 mm^3/s. I left it here to keep the print slower because the part is small.

• DRY YOUR TPU!!!

• The filament was fed from a Polymaker Polydryer box, bypassed the Filament Buffer, and routed it directly into the PTFE tube through the connector at the rear top left of the printer above the poop chute. There was a blue locking ring preventing the tube connector from being pushed in. I removed it to be able to feed the filament through using a spare PTFE tube. Reducing restriction for the printer to pull the filament was important.

• It was a bit of a pain to remove from the bed, but not impossible. Be careful using metal tools as you may scratch the PEI coating.

Installing this part was pretty easy. Simply remove the old one, destruction of the old part is likely, and begin installing the new one by putting the tapered end toward the hole in the pedal bracket. Get it started, and then use the clutch pedal to seat it further. Minor fitment can be tweaked with your thumb/finger after the clutch pedal is released. Ensure the part is fully seated before driving.

That's it!

This model is also available on Makerworld. https://makerworld.com/en/@thepanduuh/