I just replaced all four of mine on my 2006 800HO Renegade. The original ones were shot and down to the wear bar in spots. All they had were Woody's 4" at the dealer which seem to work good but I think the 6" is recommended for a Renegade. Cost about $110 for a set of four. I think in the future I will try to switch the centers for the outsides as they get worn to get more life out them overall.

 

I went with the 7.5" Shapers in the middle and left the stock 4" outside. The Shapers are awesome.