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A bit of advice please...
The bike is a 2015 Specialized Crave XC 29er HT
I want to go with a single crank,converting from a SRAM (GXP BB)2x10 SRAM S-1255, 2pc 10-speed crank which i would replace probably with a Shimano XT
Already fitted is a XT rear derailleur and a SRAM PG 1030, 10-speed, 11-36 cassette which i would like to retain.
Is it as simple as just replacing crank and removing front mech,cable and left hand shifter??
and would i need to shorten chain?
Cheers guys
You can most likely keep the cranks, though I'm not 100% on those particular ones. You need to check the BCD -bolt circle diameter. But the new ring will most likely be a direct replacement.
Get a narrow wide chainring, bolt it on and shorten the chain accordingly.
Chainline can often be optimised by spacing the bottom bracket cups a little, sometimes even with shims behind the chainring.