Bosch Performance Speed Crank Bolt

[ericcow]

Good day to all,

I have a Zen Samurai and so far I really like the bike. On my latest ride the bolt that holds the left crank arm onto the motor came loose and the crank came off before I could react. The crank was retrieved but the bolt was gone. Thankfully I was only a block and a half away from home. The motor is a Bosch Performance Line Speed with eThirteen cranks. Can anyone tell me what size/type of crank bolts I need for this setup so that I may source them locally? Cheers.

 

[BlackHand]

Not sure which crank you have, but most likely e*spec Core.

 

[fooferdoggie]

I would take it to a shop they may have one. the bolts I think are standard some are self-extracting some are not.

 

[ericcow]

Thanks for the replies. Can you tell me what the difference is between a self-extracting bolt and non s-e bolt in this regard? Cheers

 

[fooferdoggie]

the other one requires a crank puller to get the crank off once you remove the bolt. I think that's the one you have as the bolt is retained on the self extracting one.

 

[BlackHand]

I looked at a photo of the Samurai, looks like it has e*thirteen e*spec plus cranks. Note the mounting bolt part number at the bottom of the photo - looks like a pretty standard m15, not self extracting.

Link to the bolt

Replacement Crank Fixing Bolts / Self-Extractor Kits

Replacement Crank Fixing/Tightening bolts and Self Extractor Kits. Fits e*thirteen cranks of various generations as indicated below. The M15 bolts for Bosch and Brose are direct OEM replacements. The Self Extractor versions are an upgrade to the M15. Please see the service guide to select the...

www.ethirteen.com