Crank Type Identification

How to identify which style of crank is on your bike. You will be guided to the corresponding crank removal and installation video if it exists in our collection.

Questions or comments? Leave them below!

The following crank types are covered:
– ISIS Drive
– Shimano® Octalink®
– Power Spline™


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➤ About Park Tool:
Since our founding in 1963, Park Tool has been the leading name in bicycle tools. Our YouTube channel is an extension of our mission to be the ultimate resource for mechanics and riders of all skill levels. Here you will find comprehensive repair help tutorials for a wide range of components and processes, as well as troubleshooting guides, tips and tricks, and information on the latest Park Tool products.

[joshgardner]

0:22 (1) Self Extracting Crank System
1:15 (2) Two-Piece Cranks
3:35 (3) Three-Piece Cranks
5:49 (4) One-Piece Cranks

Great video - thank you!

[Quadflash]

Calvin, I've started rehabbing bikes at our local bike co-op. I had no idea how many different bikes and components there are. Your videos and your Big Blue book keep me productive and a whole lot less frustrated. Thanks for your straight and understandable instructions!!!

[calvinjonesfan]

Hi Calvin I am your biggest fan. Thank you so much for making this helpful video.

[budabead]

Another great video! thank you!
I just got myself a pcs-9 and have a number a jobs lined up.
i could do some of it but i gotta be honest... you're way to smooth at explaining things in simple terms and i just love your passion for it all - can tell you've been in this business for a while.

park tool for the win:)

love from the UK

[jeffreyvictor]

Very well explained! I like and am grateful that you supplied the link to the need video as you were explaining.

[ConcreteJungle]

Amazing video thanks. Very professional filming and explanations

[The_Mess]

Oh for a universal ISO Standard, fortunately all my bikes have been Shimano 3 piece systems, so I should have the crank tool in my disorganised and incompletely collection of tools.

And thanks, between you and Browns Cycles website, all the stuff we need to fix bikes is freely available.

[jakegarrett]

Wow, I think this video has more material covered than most of the useless linguistics/diversity classes I had to take and write essays for, except this video is actually very useful and under 7 minutes packing it all in very well!

As a mechanical and aerospace engineer, there are over a billion ways to solve a problem, and it looks like bicycle companies never could settle on one... well, at least this guy covers them well! Great video, you could have a degree in just bicycle repair from all these variations, I’m glad they got an expert on this subject, makes my life easier, thanks!

[jimtoneyNoBaloney]

Super helpful for my old Santa Cruz. Thank You!

[tatangsm]

It's really helpful from the above explanation. Thanks.

[TomAbramoff]

the video series' from park are legendary. thank you!

[opposition]

Great videos!!
I appreciate you sharing your knowledge!

[gordonreid]

What would we do without Calvin? Well done videos!

[Tombrosapien]

Hey there, excellent video, however I’m not sure mine was mentioned, I have a hexagon 14mm nut both sides covered my little rubber cap and I’m guessing the one on the right (next to the crankset) goes through to the other side, it’s an SR SUNTOUR model and I’m assuming it’s a 2 piece crank, how do I undo it?

[vitalijletko]

You can’t charge 5 grand for a bike with a square taper bottom bracket, it’s gotta be fancy, don’t you know, even though it performs the exact same function.

[brunobaumanis]

i am a noob at bikes and stuff and basically i want to put on a new crankset on my mtb bike and i guess i have a 3 piece one.. can i put on a 2 piece one on it? or are they not interchangable?
btw i want to do this all by myself without the help of a bike shop.. for fun

[IAMOGiNKD]

Hi! I have an old bike with the Non Self Extracting crank on it. Is there any way you can post a video of give me information on how to remove it? thanks!!

[robertmcfadyen]

I have a set of Shimano 431 octalink cranks where the brooching was done in each arm but with a 0.5 degree error between them which is a rare slipstream quality control "FAIL" that ended up in my spare parts inventory new .

[blodeuweddcooper]

Very informative video, thank you very much!

[michaelberna]

I could've sworn Calvin played in the Disney Atlantis movie.