PDR is now set up as a dealer for Wicked Pistons. In stock ready to ship.

Available are 13.5:1 compression pistons in:
Stock Bore
Stock Bore WR
98mm
98mm WR
Special Order available, but will take 4-5 weeks longer.

Also available are thick or thin head gaskets. The stock gasket will be 13.5:1 compression. The thick will reduce the compression slightly and thin raise compression slightly

Price is $280.00 shipped w/ Gaskets.

PM for more details.

Thanks,
PDR

Congratulations

For those who have not seen this piston, but have heard of it here is a pick:



These are good pistons.

P.S. Just to add, I do not need one, just helping out the add. Hope you don't mind.

what kinda power increase should you see with this on your typical cammod, FCI, piped motor?

I am not going to quote exact power gains. But, you will see a significant increase in torque and top end. All around power is gained from teh compression incease. This piston has proven to be reliable and shows great power gains.

PDR

Does the comp ration change fro 04-05 to 06 and newer? Or is it 13.5 no matter what year?

If you have an 06 rod in your bike, the compression will be lower.

are you sure about that diesel? usaully its the other way around, 04-05 are lower compression than 06+

I am sure on that. The stock compression on a 06 is lower. 04/05 compression is 11.9:1, while 06+ compression is 11.4:1. (thanks Tersejr)

So, if you put a piston design for a 04/05 motor that makes 13.5:1, it will inherently be about .5 less compression. Wicked thought the 06 compression would be around 12.7-13:1.

The 06 rod is shorter thus making it a true 450, you however lose compression.

The issue is when people rebuild most go to a WR crank and the need for a piston design directly for an 06 is not there, YET. This could change.

PDR

OEM compression specs are 11.9 for '04/'05 and 11.4 for '06/'07

The Wicked will have less then the 13.5 in a '06/'07 motor.

Tersjr,

You are right. The compressions are 11.9:1 and now 11.4:1.

Thats what I get for going off memory and not checking before I post! I have edited my post!
Thanks,
PDR

Hey no big deal. We won't even go into running compression vs. static compression, or compression the motor sees with cam profiles at different lifts Is Matt still talking about a '06 specific compression piston?

If the demand for it increases, then I will have it done. I think in his mind its not neccessary yet. I think once we get more 07 in the market, it will become more desired with the oil mod keeping complete failures down..... time will tell.

And thats the reason for running this group purchase, kinda to see what the demand is for pistons right now.

So, guys lets see some interested parties!!

PDR

opps yeah I had it backwards in my head for some reason. So where would I be with the "THIN" gasket on my 06 ? 13.1 ?

According to wicked, you would be somewhere in the 12.8:1 - 13:1 range. The numbers are rounded to an extent I was told.

PDR

Would we need to run 100% race fuel or could we use a 50/50 mix?

It truly depends on what race fuel you can get. I mean VP makes something like 20-30 different kinds of race gas.

I would say you need to be in the motor octane of 102 range to prevent detonation with this piston at 13.5:1.

So a mix of 91 and 110 50/50 will yield a about 100-101, which could be ok. YOu have to run it and check for detonation to be 100% sure.

Thanks Diesel. Im in! Let me know when you want payment.

I will need a stock bore WR piston.

Does there have to be 10 participants to get the discounted price?

PM sent

is there a differnce between this & the regular 13.5 CP piston, other than it says wicked on it?

Yes, the regular CP piston is a dome piston with air channels. The Wicked is a flat top piston without airchannels as to not impeed airflow. This piston will make more power than the CP regular piston.

PDR

Ok I'm in for one.

Will these still be reliable without the oil mod?

Any piston/wrist pin will face the same troubles with an un-oil modded case. This piston is not exempt from the oil mod.

Well said!

Whats the status on these? Anybody recieved theirs yet?

They were shipped out Tuesday!

Received it! Along with a boat load of stickers! Thanks Diesel!

I own a 07 and understand that the wicked piston will put me right at 13:1 with the thin gaskets. Anyone have any idea what the compression ratio would be with the thick gaskets. I would like to run pump gas as close as possible or a mixture of pump gas and race gas.

Semi locally has 111 Rockett fuel for 7.25 gal and VP C12 seems to be running well over 60 bucks for 5 gal.

what elevation are you, that will be important.

i ran a wicked in an 07 with the stock base gasket, which matt worked out to be close to 12.8:1 on premium pump gas, no issue.

so i would say that with the thick gasket you will be fine, but thats only my opinion

I will be riding at sea level with 91 oct pump gas preferrably

hmm, our octane ratings over here are different to yours, from what i can gather, your highest pump fuel is 93? correct?

based on that i think it would be a bit risky to run 91 at sea level

Actually 91 is the highest rating i have seen around here unless places like Los Angeles and heavily populated areas have 93

Pistons are in stock ready to Ship. Hit me up with a PM to get yours.

PDR

I have the piston, I plan on running 60/40 mix of C12 and premium pump gas (92 octane). 50/50 may be sufficient, but Id rather be on the safe side.

You should be right on.

PDR

Soon I will be in the market for a higher comp piston kit. I was looking at Wiseco,CP,now this one. whats really a diff between pistons thanks. I have an 06 and I was woundering the same thing about racing fuel. the highest Octane is 93 around here. Thanks

To run the wicked piston you will need to run a minimun of 102 octane.

The wicked piston is made by CP, so you get the great quality of CP. It is a custom designed piston, so you will see a little performance gain from the regular CP piston!

These are in stock and ready to ship.

Thanks,
Diesel
PDR

At my local speed shop they sale 106 Octane so will that be safe.Thanks jimmy

You have to find out what the actual motor octane. Do you know the exact brand of the fuel?

More Pistons on the way Stock bore stock pin in stock, WR pin will be here within the week.

HOT ROD WR cranks available!!!

I will also have some CP 12.5:1 compression stock bore stock pin pistons by the end of the week!

PDR

I think I might have to replace my piston soon, is there any wicked pistons that are more reliable than the stocker and run on pump gas?

The wicked is only at 13.5:1 compression. For our pump gas builds we use a 12.5:1 CP shelf piston. CP makes the wicked pistons, so it is very close. THe performance is Great. CP shelf pistons are $210.00 I have these in stock as well.

Thanks,
Diesel
PDR