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Left crank arms? Where to buy?

Old 04-20-16, 08:20 AM
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bikerbobbbb
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Left crank arms? Where to buy?

Dumb question...

I can find the right crankset arm easily enough. A few have the left arm pictured too, but those aren't the right ones for me.

Where do you get the left arm? Or what should I be searching for?

Or is it common knowledge that the left arm is always included when you buy a crankset, even though they only include a picture of the right arm?
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Old 04-20-16, 08:27 AM
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Where do you get the left arm? Or what should I be searching for?
A Professional Bike Shop.
Bike shops stock repair parts and can order what is not hanging from the peg-wall when you walk In.

common square taper?, does it matter if it matches or not , other than same length?

Last edited by fietsbob; 04-21-16 at 11:59 AM.
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Old 04-20-16, 08:35 AM
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Originally Posted by bikerbobbbb View Post
Dumb question...

I can find the right crankset arm easily enough. A few have the left arm pictured too, but those aren't the right ones for me.

Where do you get the left arm? Or what should I be searching for?

Or is it common knowledge that the left arm is always included when you buy a crankset, even though they only include a picture of the right arm?
Fleabay occasionally have them. Bicycle co-ops often have them too. Or, like fietsbob said, order it from your local shop.
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Old 04-20-16, 08:38 AM
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It sounds like you are purchasing a new crankset and asking if the left arm typically comes with it. If this is the question, yes, the left arm is part of a crankset and would be included if purchasing new. Bottom bracket, however, may not be so you need to determine the correct one and get that separately.
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Old 04-20-16, 08:49 AM
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Yep, I'm purchasing on my own, online. No LBS.

I see the left arms included all over ebay. Sometimes the bolts. I'm just not finding it on my own, or an option to buy a matching single left crank arm. At least not easily and not a left arm that matches the brand/model/paint on the right crankset arm.

It sounds like the left arm comes with then. I wonder about bolts...
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Old 04-20-16, 09:29 AM
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Originally Posted by bikerbobbbb View Post
Yep, I'm purchasing on my own, online. No LBS.

I see the left arms included all over ebay. Sometimes the bolts. I'm just not finding it on my own, or an option to buy a matching single left crank arm. At least not easily and not a left arm that matches the brand/model/paint on the right crankset arm.

It sounds like the left arm comes with then. I wonder about bolts...
Have you purchased the crankset or are you just looking for one? If you have purchased the crankset and it didn't come with the left arm, contact the seller. You didn't purchase a "set" which should include both arms. If you are just looking at cranksets on-line, the "set" comes with both arms. The left one is usually in a small sleeve inside the box.
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Old 04-20-16, 03:21 PM
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Or you could just mix-and-match. Sounds kinda like that old Johnny Cash song, "One Piece at a Time".....
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Old 04-20-16, 03:28 PM
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And yet, some here still think bikerboobbb is not a troll. That's so funny!
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Old 04-20-16, 04:00 PM
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Originally Posted by cyccommute View Post
Have you purchased the crankset or are you just looking for one? If you have purchased the crankset and it didn't come with the left arm, contact the seller. You didn't purchase a "set" which should include both arms. If you are just looking at cranksets on-line, the "set" comes with both arms. The left one is usually in a small sleeve inside the box.


I'm about to purchase. I found one on Amazon that has the left arm in the pic too (as far as Amazon can be believed). From what I read on this thread, it looks safe. The pic has new bolts too, so that's probably a plus... except that they use an allen/hex head instead of the 14mm hex bolt head I have now. I found tools for it though I think.
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Old 04-20-16, 04:13 PM
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Originally Posted by bikerbobbbb View Post
I'm about to purchase. I found one on Amazon that has the left arm in the pic too (as far as Amazon can be believed). From what I read on this thread, it looks safe. The pic has new bolts too, so that's probably a plus... except that they use an allen/hex head instead of the 14mm hex bolt head I have now. I found tools for it though I think.
You really have to go the left crank arm store. It's member's only. The "big government" of the bike companies keep left crank arms under lock and key so people can't collect them in excess. PM me and I'll send you the payment information. I believe it's $200 for a membership.
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Old 04-20-16, 04:32 PM
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It would probably behoove you to ask the seller.........
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Old 04-20-16, 04:32 PM
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Originally Posted by AnkleWork View Post
And yet, some here still think bikerboobbb is not a troll. That's so funny!
You know, I've resolved several times to stop participating in the bikerbobbbb threads, but I just can't stop myself. His questions are just too plausible.
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Old 04-20-16, 06:59 PM
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i heard that Amazon only sells right cranks because single-leg pedaling is better for you. They simply will not stock left cranks. Nor does eBay. Nor any other online seller. Shimano actually stopped making left cranks. I mean, it all makes sense because who has two legs, anyway? Even my dog is one legged.

bikerboobbb, I apologize if you are in earnest, but sometimes it's hard to believe that anyone is that much of a boob.
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Old 04-20-16, 08:16 PM
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Old 04-20-16, 08:22 PM
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Gee willikers.
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Old 04-20-16, 08:33 PM
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As an evil bike shop owner, these kind of threads amuse and sadden me. I know a lot of shops are staffed by pompous jerks, but many are full of helpful, decent employees. I've seen several threads go on and on, when the easiest answer would take 30 seconds to answer if you walked into my shop for the first time and asked any of us your question. None of us would insult you, or pick your pocket. You can wear your " BIKE SHOPS SUCK" t-shirt, smell bad, and interrupt a paying customer and we'll still try to help. You don't have to buy anything, but if you preach your anti bike shop rant, we WILL eventually ignore you.
To add to all the answers others have given, crankSETS come with BOTH sides. Lefts are available by themselves, for those that need ONLY a left. There are 15 LH crankarms hanging on my wall. They, along with many other things, are for sale. Thankfully, our regular loyal customers aren't afraid of my shop.
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Old 04-20-16, 08:50 PM
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A couple of possibilities cross my mind..... does the original poster owe his local bike shop money? Did the employees catch him going through their dumpster looking for free stuff? Did they make fun of him? Did a female bike mechanic snub him in high school? Is he riding a stolen bike, and he can't take it to the LBS?
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Old 04-20-16, 08:51 PM
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Originally Posted by willie52 View Post
As an evil bike shop owner, these kind of threads amuse and sadden me. I know a lot of shops are staffed by pompous jerks, but many are full of helpful, decent employees. I've seen several threads go on and on, when the easiest answer would take 30 seconds to answer if you walked into my shop for the first time and asked any of us your question. None of us would insult you, or pick your pocket. You can wear your " BIKE SHOPS SUCK" t-shirt, smell bad, and interrupt a paying customer and we'll still try to help. You don't have to buy anything, but if you preach your anti bike shop rant, we WILL eventually ignore you.
To add to all the answers others have given, crankSETS come with BOTH sides. Lefts are available by themselves, for those that need ONLY a left. There are 15 LH crankarms hanging on my wall. They, along with many other things, are for sale. Thankfully, our regular loyal customers aren't afraid of my shop.
All of what you say is true and would be helpful IF the OP were either asking serious questions or was capable of understanding even very straight forward answers. His initial question(s) in the numerous threads he has started were answered in the first few following replies but he either couldn't or wouldn't understand the answers and repeated the same things on and on and on.

What is surprising is the number of respondents who continued to try to help long after it should have been apparent he is either a troll or absolutely unable to understand what he was being told.
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Old 04-20-16, 11:30 PM
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Originally Posted by Andy_K View Post
I've resolved several times to stop participating in the bikerbobbbb threads
Just as malefactors can hijack a thread and make it worthless (or worse) benefactors can hijack a thread and make it decent. There's probably nothing to gain disparaging anyone (at least in a bicycle forum) but benefactors make things better by contributing and ignoring provocations. OP asked a real question; perhaps others can benefit from honest answers even if he can't. Fora have lurkers.

I broke a left crank arm. I bought a suitable replacement from Niagara Cycle for $8. I tried a local bike shop that had used parts but they didn't have anything; new was $50, perhaps an appropriate price.
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Old 04-21-16, 12:49 AM
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Originally Posted by RandomTroll View Post
. . . OP asked a real question . . .
And one troll begets another.
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Old 04-21-16, 08:26 AM
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Originally Posted by AnkleWork View Post
And one troll begets another.
'Where can I buy a left crank arm?' isn't a real question?
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Old 04-21-16, 09:49 AM
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Originally Posted by bikerbobbbb View Post
Dumb question...

I can find the right crankset arm easily enough. A few have the left arm pictured too, but those aren't the right ones for me.

Where do you get the left arm? Or what should I be searching for?

Or is it common knowledge that the left arm is always included when you buy a crankset, even though they only include a picture of the right arm?
Left crankarms are commonly available separately. You may not be able to find a perfect match so, if you're that picky, you may get stuck buying a whole new crankset. If you take the attitude that you can only see one side of the bike at a time, you should be able to source just the left. Make sure that the length and the orientation of the square hole matches what you are replacing.

If you are trying to buy just the right side, I suspect that you're out of luck.
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Old 04-21-16, 10:21 AM
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Originally Posted by Retro Grouch View Post

If you are trying to buy just the right side, I suspect that you're out of luck.
That is the supposition under which the OP is operating........he believes that he will be purchasing the right side only and needs to buy the left side separately.....
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Old 04-21-16, 11:56 AM
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A big cost is shipping and stock distribution,, which is the same for a complete crankset as it is for 1 crank arm.
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Old 04-21-16, 04:31 PM
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Originally Posted by bikerbobbbb View Post
Is it common knowledge that the left arm is always included when you buy a crankset, even though they only include a picture of the right arm?
Yes. That's why they call it a crankSET.
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