1972 Cr450

Could anyone give me the dimensions for a cr450 exhaust please. I’m having trouble finding one to use on my race bike so I think I’ll have to make it myself.Thanks

https://www.ebay.com/itm/Husqvarna-...00bc54b:g:5esAAOSwg59eMEsx&LH_ItemCondition=4

That looks good, is the cr400 pipe the same as the cr450?

72 400 and 450 pipes are not compatible in dimensions, performance yes. The original 72 - 73 450 pipes show up on Ebay occasionally but good ones are becoming scarce and pricey, btw 72 cr and wr pipes are the same. Since you're building a race bike you may want to consider a pipe from a 74-75 400 - 450 model. They tuck in further so your leg is less likely to be cooked plus they have built in silencer/spark arrestor. A 74 75 400 will fit the 450 if the 450 head fins are shaved. The stock 74 450's came with shaved fins as did the 400's.

My MK frame 450 race bike project with a 74 75 400 pipe. On another note, the kicker setup isn't finished.


74 450 WR Example

Thanks Crashaholic, you’re info has made my choices a lot clearer. Judging by your name you probably have the same riding style as me.

Thought this may help, pic of a 400 pipe on a 450. If you want to stay with an era correct pipe a 400 could work by shortening the header at the center weld. Besides a shorter header on the 450 is suppose to be good for performance.

I forgot to mention that the later 74-75 era pipe would require special mounting brackets up front and at the silencer tube, could raise the price of the setup. Also the rear pipe mount on your 72 thats located above the number plate would have to be bent in toward the fender for clearance purposes.

Looks good Crash! What paint you using for the black? And is that the same pipe? It doesn't look as close to the head as the last pic. Also what about the exhaust port manifolds ? Are they all the same size? And i LOVE the see thru crank !!! Hahahahah !! Chris

I've been using rattle paint VHT Semi Gloss 139 cured on the bbq at 250 F for an hour. The stuff chips just like any other can paint I've tried but VHT is convenient for me to buy. Something I started doing a few years ago is spraying the side cases with old screws inserted so the surface beneath doesn't get a buildup of paint that chips when I used the impact screw driver.

No its a pre 74 400 pipe and the previous post is after 73, not sure what model. Possibly a 250 definitely not a 450 as it has a smaller stinger than the WR but its a bit bigger than the CR and has a built in turbo spark arrestor, e.g. JR Krizman.

The large displacement models are from 69 into the 80's.

Its a new concept I've come up with. Should lighten the bike substantially. I"ll let you know how it works out.

Hahahahahah!! Looks like it should be pretty quiet too!!


Thanks for the info. Chris

It wouldn’t be a Husky if it didn’t burn your leg! Everyone I knew who had one in the seventies had a toasted left knee & hated tight right hand off camber turns.
By the way those bikes look gorgeous. I’m struggling with mine as I’ve just moved house & my bikes & lathe are in storage until I can build a new workshop.