No set bonus? D:
	You can only get 5 of the same type bonus total (there are some exceptions like the 7.5% from LotG stacking with other 7.5% bonuses).
If you got 4 bonuses from Crushing Impact and also have a set of Red Fortune slotted (which also gives 5% recharge bonuses) slotted that is 5 total 5% bonuses another Crushing impact won't give you anything extra as you will all ready have hit the cap from the rule of 5.
        
-Insanity is doing the same thing over and over again and expecting different results. - Albert Einstein.
-I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use. - Galileo Galilei
-When injustice becomes law, resistance becomes duty. - Thomas Jefferson
	Obligatory wiki link:
http://wiki.cohtitan.com/wiki/Invent...e_Law_of_Fives
        
ohhh, so how do people get the like 100+% recharge bonueses to get perma hasten then if you can only get 5 of the same thing. for me that stops at 25% :/
	You can potentially get:
5x5%
5x6.25% (Decimation, Positron's Blast, some others)
5x7.5% (the only one I can think of is Manticore)
5x "Luck of the Gambler" 7.5% (same bonus, different name) 
And many purple sets give 10% each, for another 5x10% possible. 
By the way, if I remember you need about 90% for perma-hasten. Before ED, you used to be able to do it with five "+2" SOs, I think, which is 167% x 1.1 or 183%.
        
Mini-guides: Force Field Defenders, Blasters, Market Self-Defense, Frankenslotting.
So you think you're a hero, huh.
@Boltcutter in game.
	Hasten lasts 120 seconds and recharges in 450.  To get the 450 duration down to 120, you have to divide by 3.75.
The formula is (original time) / (1 + recharge) = resulting time
So 'recharge' has to be 2.75 (or 275%).  This figure includes the enhancement slotted in Hasten, plus the effect of Hasten itself.
You can enhance for 95+ %.
Hasten is 70%.
So you need between 105 and 110%, depending on your exact enhancement value in Hasten.
If you set your power display to show your total recharge, it has to hit 275% minus the amount of enhancement in Hasten (since that is not included in the displayed figure).
        
Paragon City Search And Rescue
The Mentor Project
| Hasten lasts 120 seconds and recharges in 450.  To get the 450 duration down to 120, you have to divide by 3.75. The formula is (original time) / (1 + recharge) = resulting time So 'recharge' has to be 2.75 (or 275%). This figure includes the enhancement slotted in Hasten, plus the effect of Hasten itself. You can enhance for 95+ %. Hasten is 70%. So you need between 105 and 110%, depending on your exact enhancement value in Hasten. If you set your power display to show your total recharge, it has to hit 275% minus the amount of enhancement in Hasten (since that is not included in the displayed figure). | 
Mini-guides: Force Field Defenders, Blasters, Market Self-Defense, Frankenslotting.
So you think you're a hero, huh.
@Boltcutter in game.
Well, I had checked all this stuff recently since I just got perma Hasten on one toon.
Paragon City Search And Rescue
The Mentor Project

So i recently bought the Crushing Impact IO set for melee damage, and the (5)th IO gives a +5 recharge bonus to all power. after slotting it i was excited to see it work. however, after i slotted two more of these sets *at once* i noticed the set bonus for (2)-(4) worked properly and the (5)th did not. i received no +5 recharge bonus to my moves and am quite angry. can anyone help me on this topic, i don't understand why it didn't give me the bonus..