I would agree with IT over the oem vs aftermarket from a fitting point of view.
I would also add in a point about liability, if an aftermarket bar fails allowing the prized caravan to detatch and cause goodness what carnage, you're likely to be on your own.
At least with oem from a reputable source like our forum sponsor, you should have a chance should the unforseen occur.
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Daily drive:
2016 Infiniti QX70.....a car that's even more complicated than my last Infiniti FX to modify 
Current 'Project':
VW Crafter CR50 4 berth camper van
Previous 'Projects':
2006 Subaru Legacy Spec 'B' 3.0R,
1994 Ex-MOD Land Rover Defender, now "civilianised".
2000 Audi S8 FL
www.whall.co.uk
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