New clutch needed

[Rooksy]

Hi guys i have a 2005 1.9tdi 6 speed manual 110bhp but i believe it to be remapped as it pulls pretty strong. The clutch is starting to slip when pulling in 4th and 5th with the torque so i'm looking to fit a better clutch than the factory fitted one could some body throw me in the right direction to a decent one, any info will be much appreciated. Cheers