I have normal road wheels 700c, 9 speed shimano............should I go for 130mm or 135mm......other than the one being, presumably 5mm wider, what is the difference?

i have got a onza t-rex trials bike and i am going to buy this hub the bike is running on non disk, and i do not know what size i need can somebody help me

How do I know whether I need a 130 or a 135mm unit?

May i order Hope Pro 3 Hub Rear 130 MM/36 Hole/Campagnolo - Black?

I'm writing as I need some professional tech support concerning your products.

First of all, I'm extremely interested in buying one of your rear hubs [to start with then I would like to go with the front one.]

I need a heavy duty rear hub and use v-break system that's why my original thought was to go with Pro 3 Mono Hub. However, I started to think that, as this hub was designed with road cyclists in mind, it might not have been designed for dealing with large loads. Hence my question: should I rather choose Pro 2 Evo Hub [because of its rigidity] although I'm not going to instal disc brakes? This could spoil the looks, but I think it would work perfectly with my 9 speed Shimano XT cassette. Am I right here?

Or maybe, I can install the Pro 3 Mono hub without any risk of destroying it because of the heavy loads?

Important info: I weigh about 110 kilos [cir. 220 pounds] + another 20 kilos [40 pounds] of gear above the rear wheel. I ride almost only on asphalt roads but, as always, there are occasional bumps in the road or a short distance on gravel. I want to use a Mavic A319 rim and 700x40C tyres.

I would be grateful for you help.