No Im not talking about that Shirly McClain hookey poo crap about coming back after your dead. Im talking about deep freezing bike (or anything metal) parts so they last longer.

So far all I have done is my sprockets and it seems to me fairly successful. The Sunstar sprocket that I am running now has lasted 30-40% longer than my last set. So far I am very happy with the results.

Does anyone else do this? I havent seen any posts concering this matter. I just wondered what eveyone else thinks of this process.


Darin from Missouri 1999 WR400F

I put the rear sprocket on about December of 99, and as of now it just has the very slightest of a "claw" look to the teeth.

I ride very frequently. Probably about every other week at least (minimum).

I also froze the countershaft as well and it was looking a little more grooved. I just replaced it today with another cryo'ed sprocket.

Personally, I think the process is definatly worth it. It only cost me $5-10 for the sprockets. You cannot do the O-ring chains though because he told me it will dry out the rubber o-ring and crack it.

I know for a fact though that the aluminum sprockets will out last my D.I.D. gold x-ring chain.

If you can find a place to do it in your area oatmeal, I would definatly suggest trying it out.


Darin from Missouri 1999 WR400F

We use liquid nitrogen on the ship for freezing valve seats to make them easier to insert and also for guides rod bushes.

I have the stock Sunstar sprocket on my YZ4 and a O-ring chain I put on thebike when i brought it in July 99.

Sprockewt is mint abd cahin is now wrecket due to being waterblasted and forgetting to lube afterwards.

I've found that waterblasting the clain and a lube afterwards has extended the lif of my chain and sprocket.

My theory is that new chainlube attracts dirt etc while lube thats a week old (or even overnight) seem to attract less dirt etc and last longer.



**Ride it like you Stole it!**

Matt Porritt

99 YZ400F

Rubber Chicken Racing

Motorcycle roadrace teams use Cryo for a lot of stuff like engine and trans parts, brake discs, ect... The part that they have found to benefit a lot is that ignition coils make a hotter spark after they've been cryo'd. Don't ask me why or how it works, that's just what the cryo guy tells me, he said all the teams send in boxes of coils to be done.


'99 WR400

'92 GSXR 7/11

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I read about this, it sounds weird but freezing metal is supposed to tighten up the molecular structure for longer wear, the article I read was in a hot rod mag and it sounds like many other racing industries use this, dragsters etc, as well as special tools and what not. When you say the sprocket is lasting longer, can you give me a time frame, like months or years, and how much do you ride. I'd be interested to find out more.Thanks

The guy that does my stuff also does stuff for Jack Nickalus the pro golfer. His clubs are supposed to hit the ball harder (or something like that)


Darin from Missouri 1999 WR400F

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