Sharing for anyone else who is interested in an integrated Enve cockpit and 1-1/8” tapered fork on their Grizl gen 1.
To step down from 1-1/4” to 1-1/8” at the top of the head tube, I’m using an FSA headset top bearing assembly (search for “PREMIUM HEADSET INTERNAL UP INT Ø44”). For this setup I’m just using the silver EC44 cup, which sits where the stock Canyon bearing goes at the top of the head tube, and then the 1-1/8” FSA lock ring. The EC44 cup is vertically taller than the stock canyon bearing, so there’s a ~2mm gap between the bottom of the lip and the frame, so I’ve put a thick o-ring there to fill the gap and help seal the system. Not perfect, but good enough for me for now.
I have 5 headset shims (Cane Creek sells them, or call your LBS, or look on Amazon) sitting directly on top of the lock ring, which are 0.25mm tall each with a 1-1/8” internal diameter. These allow the Cervelo top cap adapter (purchased directly from Enve) to sit on top of the FSA cup without binding when you tighten the top cap. I started with one headset shim and just kept adding them until I could tighten the top cap to 2Nm without the steering getting sticky. Once I got to 5 shims it was buttery smooth with almost zero visible gap between the Cervelo top cap and the EC44 cup, so dust and water will hopefully not be an issue.
I sort of just used trial and error and some research to find a top cap that would marry with the Enve spacers and be about the right diameter for the Canyon head tube, and I think the Cervelo is the narrowest base out of all of the available options from Enve. I think it looks pretty good.
Hopefully this helps anyone trying to run an Enve integrated cockpit – happy to answer questions on the comments if you have any.
by papyrusinthewild