will and how much will a degree key help my blaster.and is it hard to put on

 

Easy to put on but you need a flywheel puller, which you can get for like $11 at Vito's. Put on on each of my kids' Blasters. Real noticeable improvement in low and mid range, and no noticeable loss of top end. BUT.........the offset key is not as strong as the stock one, and our piped Blaster sheared it. I put the stock one back on it after that. The other one still going strong.