some one explain this to me

[t0pgunner]

http://www.ebay.co.uk/itm/VW-GOLF-MK3-GTI-16V-VR6-REAR-UNDER-TRAY-BUMPER-RARE-/260836982228?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3cbb187dd4


an under tray bumper this some kind of wanna be diffuser :S

[F17BAD]

Got one of them on mine

just a under tray, makes it look more tidy thats all,

its a rip off  too as these are £40 new at the dealer

[t0pgunner]

i see but not many people are going to go looking under my car to see if its tidy seems like a waste of money to me

[F17BAD]

i see but not many people are going to go looking under my car to see if its tidy seems like a waste of money to me

Yep

[Wayne]

I had one of those on my 96 GTI, did not know it was an option as such.

[t0pgunner]

well u learn somthing new everyday dont ya

[Golf_GT_TDI]

Vento has its own version as standard 

[thai-wronghorse]

Ive got one on my 97 16v, apparently they're supposed to help reduce drag coefficient...

[t0pgunner]

Reduce drag ok lol as I casually drive at 100 everywhere I guess it would come I'n handy might order one up 

[MotorPsycho]

It will actually help improve aero, underbody flow is one of the biggest causes of drag on a car due to projections, voids etc so the bumper will normally catch a lot of air like a bucket. Is it worth it? Dunno probably not

Lowering a car helps reduce the drag CO a well*, less space to get under car = less airflow under car



*to an extent, at some point not you'll hit stall and make more drag, or hit the floor and make even more drag :p