Are there any differences between the mk1 mx5 hubs and uprights and the mk2.

I have seen that some have an ABS ring but geometry wise are there any differences? also were there any differences in front brake disks and calipers between these cars.

I understand that the newer ones are 5 stud but wanted to understand the differences between the older 4 stud front upright set ups,

Many thanks in advance

all uprights are interchangeable, '89-'05, only the hubs have the reluctor rings added and the upright may have a mount for the sensor

the calipers for 235 (1.6) and 255mm (1.8) discs are the same, only the carriers change.

one minor point, if you fit 1.6 calipers to 1.8 carriers, you need to swap the carriers n/s to o/s and vice versa to keep bleed nipples at the top, because the large and small slider pins are reversed. if you need a spare caliper in the future, you either need to swap in pairs, or get one to match the other side, 1.6 or 1.8.

'99 onwards (mk2), all cars got the 255mm discs, both 1.6 and 1.8

the 277mm 'sport' (and some other mk2.5 limited edition) discs have different calipers and carriers, but the caliper mount pitch on the uprights are identical between all years and models

235 and 255 rear calipers are the same across all models except the sport, but if you fit 255 discs to 235 uprights, you need to trim some of the stone shield away, same with fitting 277mm to 255mm uprights.

Thanks thats spot on pal, cheers for the response much apreciated

it might be worth signing up to mx5nutz.com if you have anymore questions. the search is pretty good, but it's an active forum with a good knowledge base and full of helpful answers if you don't mind dodging a bit of sarcasm here and there

Is there not a difference in the steering arms?

Please ignore!

[Edited on 1/12/21 by Big T]