I’ve got a XS Fire Mountain that I’m doing up for my son. I need some 165mm cranks for it, but they seem very expensive to me.
I’m after spare taper or external, 1, 2 or 3 rings in an easily replacable bolt spacing.
Is there anything out there for less than £50? I can’t find much…

Thanks for any help!

http://www.spacycles.co.uk/m2b0s109p2003/SPA-CYCLES-XD-2-Touring-Cranks

£20 do you?

Secondhand Zee?

I just got some square taper 155 mm for my SiL. £50 ish I think from SJS cycles. They’ve got various size options including, I would imagine, 165 mm. Nothing fancy and they’re pretty weighty but they tick all the boxes.

aas above sjs have a few options

Thanks folks. Both options look good.
Those SPA ones are probably a bit lighter than the Thorn ones would you think?

if you’re going square taper, you can go shorter than 165…

(inside-leg divided by 5, as a rough guide. My 5foot wife uses 140’s)

Thicker pedals?

Alivio T4060 from CRC, external cups/hollow BB axle, not too heavy if converting to single ring… £40 and sell the rings on ebay. Just be warned – it’s not a looker!

https://www.amazon.co.uk/Kettenradgarnitur-SR-Suntour-T20242-Zähne-schwarz/dp/B0029MP3AO/ref=sr_1_fkmr0_1

Not sure if 152mm is too short? Cranks are fine, chain rings are heavy, ideal for a 1x conversion.

Thicker pedals

Pedal thickness doesn’t affect the ‘throw’ of the cranks.

XT double in 165 without BB are £77 at CRC. JAN17 for another 10 off probably.
More than 50 but bloody cheap.

@downshift – I’m not sure if those rings are removable. I think the rings are rivet on. Also may have an odd BCD

what length are your son’s legs? you might find 165 could be too long.

Crank Length Calculation

I have 2 sets of those suntours on kids bikes, rings are removable.

@nre – What’s the BCD? Is it 104?

Yep std 104, have superstar 30t Nw rings on our girls bikes (there’s a previous thread or 2 on them)…

@nre – thanks for the info. I’ve just ordered a set for my daughters bike 😀

Work just fine…

You’ll need a chain for it to work TBH

Just bought a set of these for my fat bike. 162mm long, square taper, 4 bolt – lighter than the Suntour cranks they replaced – fitted a Renthal narrow-wide chainring and sold the bashguard on for a tenner 🙂