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Mates got set of formula b4's but the rear caliper seems to be for a default 140mm rotor. The caliper is IS but is about 10mm short on fitting to the IS frame with a 160mm rotor. Does an IS to IS 160mm adaptor exist as i have been unable to find one. Im guessing its because newer brakes have a default rotor size of 160mm so an adaptor wouldnt be needed.
I could be wrong but a 160mm to 180mm should give you the extra height you would need. which is easily available.
No, but it stands to reason that you could use an Is/ IS plus 20, which adds the extra 10mm to a 160 mount under normal circumstances, so should fit a 140 caliper to a 160 rotor on your frame.
This might be your adapter here
http://www.chainreactioncycles.com/ie/en/hope-mount-adaptor-is-to-is-20mm/rp-prod13736
[img] http://media.chainreactioncycles.com//is/image/ChainReactionCycles/prod13736_IMGSET?wid=500&hei=500 [/img]
Why couldnt i find them. Oh well. These are very expensive compared to the post to IS adaptors. Its cheaper to buy a 140mm rotor
Why couldnt i find them. Oh well. These are very expensive compared to the post to IS adapters. Its cheaper to buy a 140mm rotor
It depends on how good his rotors are. I'd rather have a £12 adapter than a £12 disc.