F7R Exhaust Valves

[grantyswilly2]

Hi, I need two exhaust valves for my Clio Williams and was wondering if anybody had bought these from Trechii Ltd? I think these are the correct size, any ideas?

http://www.ebay.co.uk/itm/RENAULT-CLIO-WILLIAMS-MEGANE-F7R-EXHAUST-VALVE-/170497822983?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item27b2765107#ht_1123wt_907

[grantyswilly2]

The dimensions for the exhaust valves they have for sale are - 28.3mm x 7mm x 108.8mm.