How To Swap Shimano Ultegra Chainrings and Cranks - My Garbaruk 1X TT Setup

In this video I walk through how to swap your Shimano Ultegra R6800 Chainrings and Crankset with a brand new Shimano Ultegra R8000 setup with a Garbaruk 1X long-tooth chainring on my Scott Plasma Time Trial Bike.

Shimano standard is a BB386 press fit bottom bracket, I did not swap the bottom bracket in this video. The swap I did is extremely simple and the steps are easy to follow.

Ensure when purchasing a 1X chainring for Ultegra crank arms that you have the correct BCD (bolt-center diameter) in this case it's 110x4 BCD, however, note that R6800 has different crank arms than the R8000 Ultegra set so cosmetically, they will look different.

I highly recommend Garbaruk 1X chainrings after having raced and ridden my new chainring a handful of times with a freshly waxed Shimano 11 speed chain.

You can find them here:

There are also 1X options for Dura Ace, SRAM, etc.

I am running an 11 speed 1X system now with a SRAM Red Rear Derailleur.

If you want to see my full breakdown on the time trial bike check out this video:

Get the Shimano 8 Spline Dust Cap Tool Here:

The Shimano R8000 Crankset I Purchased:

How to Size Your Chain From Park Tool:

0:00 - Why I'm Installing Shimano Ultegra R8000
1:01 - Tools Required To Swap Shimano Cranksets
3:41 - How To Swap to An Ultegra 1X Chainring
7:30 - How To Remove A Shimano Ultegra R6800 Crankset
10:17 - Cleaning Up Your BB386 Bottom Bracket
11:01 - Installing A Shimano Ultegra R8000 Crankset
16:35 - Chain Sizing Resources

[WaltDoesBikes]

Hey folks! I realized on the removal of the R6800 NDS Crank Arm I pulled the dust cap BEFORE breaking loose the crank arm clamping bolts. The dust cap also serves as a bearing pre-load. It was hand tight, however I did it in the wrong order. Break lose the bolts that clamp the arm to the 24mm spindle and THEN pull the dust cap. It's likely it comes off much easier. Hope that adds some clarification if you're having a bit of trouble. Cheers and sorry for the confusion! Any other questions feel free to drop them below!

[Fluxyzabc]

Thank you for this thorough video. I was looking for too long what torx you actually need - T30!

[Jacob]

Thanks Boss, appreciate this video.

Have a question- I have a 105 crankset and want to upgrade to a Dura Ace.

Is it a direct swap? Do I need to upgrade the BB? Can I just plug and play?

[jakubkral]

I have bought an alternative product from Alugear also specifically designed for Ultegra R 8000 cranarms. The ring is pretty noisy. How is Grarbaruk? Is it ok? Other experiences?

[jimbo]

Are you sure you've actually got 15NM on the chainring and not the bolts bottoming out because you've removed a chainring and haven't used shorter bolts to compensate?

[sknkwrksowner]

Whoa whoa whoa! Bruh! The FIRST step is drop that coffee intro we love! Thumbs down, needs an edit. #joking #goodcontentalways

[DraxMoranis-dn]

If Joe dirt chose a different direction and became a cyclist