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After some help please, so I've got a 100mm hope pro4 front hub with a 20mm axle and I'll like to convert it to 110 boost as I've managed to get a great deal on some boxxers that are boost. Is this possible and what adapters would I need? Thanks in advance
Pendant mode. 20mm is 110 wide already (but that doesn't help you).
Are the forks 15mm boost or 20mm boost?
If 15mm boost then hope make an adaptor that requires a slight re-dish. If fits the right hand side so may mean you also need a standard 15mm kit for the left hand adaptor. Or MRP better boost if you don't want to re-dish.
It's they are 20mm boost then presumably you just need spacers.
They currently 20mm so should just need spacers by the sound of it, in theory all I need to do is push it out 5mm at either end and my rotor will still be in the same position. I'll perhaps call my lbs in the morning as it wouldn't surprise me if hope make an adapter.
If they're already 20mm, that should be they're already 110 and you just need to space out the rotor (I think)?
I don't know if hope do a boostifying 20mm rhs spacer, assume it would need a shorter LHS spacer to match?
dandasbike
in theory all I need to do is push it out 5mm at either end and my rotor will still be in the same position
you may want to revisit that theory... any disc side spacer will move your rotor over relative to the caliper
If they’re already 20mm, that should be they’re already 110 and you just need to space out the rotor (I think)?
Is the correct answer.
20mm boost, is the same 110mm wide as 20mm through axles always were, but the flanges and disk mount are moved outwards to where they would be on a 15x110mm boost hub. Because the old 20mm standard was based around a 100mm hub, with 5mm end caps (I have no idea why).
Interestingly (NOT); early Marzocchi 20mm forks already did this, so you had to buy a 5mm offset adapter for your brake caliper.
So yes you need a 5mm disk spacer.
5mm disc spacer
Sorted! Managed to get a 5mm rotor spacer for 7 quid and that's all I need. Didn't even know dh boost was a thing, apparently dvo supply their dh forks with the spacer included. Thanks for your help