Quick rotor size question (with photo)

ednino

The bike came with 180mm front & 160mm rear

I don't need 180mm and want 160mm front & rear

If I remove that black adapter & bolt the calliper straight on, will this be for 160mm? Or do I need a different adapter thing?

nicklouse

correct.

poah

why do you want a smaller disc - there won't be a huge amount of difference between a 180 and a 160 in terms of power and weight. is the disc buggered?

Chunkers1980

So you're questioning why here? But flatly, no caveats, say 203s else where. Odd.

poah

Chunkers1980 wrote:

So you're questioning why here? But flatly, no caveats, say 203s else where. Odd.

no I'm just curious as to why - just being nosey not often you see someone wanting to go smaller.

I only have a 203 at the front for bling

The Rookie

A 160mm will save about 60g over a 180mm for starters (circa 34g for adaptor and a second set of bolts, although not with the Shimano inline adapator as fitted here!).

Ednino - you will need shorter calliper mounting bolts!

ednino

Cheers

as above, bigger brakes weigh more with no obvious advantage to me. For XC and trail centre use 160mm is ideal

02gf74

nicklouse wrote:

correct.

.... nearly, you will need shorter bolts.

nicklouse

02GF74 wrote:

nicklouse wrote:

correct.

.... nearly, you will need shorter bolts.

was not asked.

it is obvious.