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Sagging rear Phazer FX 07.

Antewallgren

Veteran
Joined
Nov 23, 2019
Messages
28
Age
34
Location
Sävar
Country
Sweden
Snowmobile
Yamaha Phazer FX 07
Hello!

I think my Phazer is sagging alot in the back. I've seen pictures of phazers thats alot raised at the back, mines kinda flat. It got even worse when there was some snow buildup. Its done 6000km now and dont know if anything has been done to it suspension vise.
 

Shock rebuild???
 
There is alot of sag on Phazers. I like that for handling but much of it is caused by friction. If you take apart entire rear suspension and clean every shaft and bushing much of it goes away only to return shortly after. Being a 07 you also should look for damage to the linkage under there. There was a update kit to get much stronger aluminum version or weld the link. Shocks could also need refreshing. Could be sticky. Any little thing will cause sag.
 
Is the spring pre-tensioner set to the highest? If so, maybe get a pair of adjusters that have an even higher fourth setting. I think Barn of Parts sells them.
 
Yeah I've set them to H. Is there any exhaustion on these springs? Like they loose their strength over time? What were the NM rating for a 07 FX? I see the newer ones are 2500nm.
 
Yeah I've set them to H. Is there any exhaustion on these springs? Like they loose their strength over time? What were the NM rating for a 07 FX? I see the newer ones are 2500nm.
I am sure they do lose some strength over time but most of the loss is pretty quick. 500mi or so. Not worth buying new of same rate. Honestly I get a kick out of the worry of sag. Unless there is some reason you want the back end up in the air which I have not found if it rides and handles good and doesnt bottom why worry about the height? Shocks do the work. Ever look at a Off road race truck? They are lower than my stock street truck and ride like a Cadillac through HUGE bumps and jumps. Spend your $ on rear shocks. One of the best investments to my Phazer I ever did. Custom Axis rear shock. It and the upgraded link kit ended the weekly breakage permanently. Still amazed how well that skid works vs my Viper even.
 
I'm gonna pull a sled with my two kids and wife, and maybe have someone at the back. Men me and my wife both sat on it it compressed to the bottom. Maybe this is what it is stock, but I would like to be able to sometimes go two on the Phazer.
 
I'm gonna pull a sled with my two kids and wife, and maybe have someone at the back. Men me and my wife both sat on it it compressed to the bottom. Maybe this is what it is stock, but I would like to be able to sometimes go two on the Phazer.
Gotcha yes you will need heavier springs or the adjusters for sure if riding double. Let me see if I can find spring rating for FX.
 
Gotcha yes you will need heavier springs or the adjusters for sure if riding double. Let me see if I can find spring rating for FX.

Cool thanks :) I know they did some changes with the shocks at the back for 08. But I don't know if that was all they changed.
 
Last edited:
Cool thanks :) I know they did some changes with the shocks at the back for 08. But I don't know if that was all they changed.
No problem. I believe this is what you are looking for. Is usually optional springs listed heavier and lighter but havent found them yet.
Phazer Springs.jpg
 
No problem. I believe this is what you are looking for. Is usually optional springs listed heavier and lighter but havent found them yet.
View attachment 151617

I wonder if I could fit the springs from Venture Lite? I read they are rated 3000nm and RTX ones are 2500nm. And also replace the all black non adjustable oil shock in the back.
 
No, they are straight and longer, which is why they don't need the bend. You could add the bend with some torches, and then cut them? Might make the ride stiff as hell though.
 
The rear mounting point is so far forward on a Phazer that I just don’t know if it would ever work well with 2 people. Even trying to ride with my 90# daughter it would pop the skis off the ground with the slightest touch of the throttle. My Viper, for example, has the rear arm mounted 8” further back on the chassis and is far easier to ride double. My Phazer has the weakest springs (MTX) set to stiff and only uses 1/3rd the travel with me sitting (190#) on it, and about 1/2 when my 250# buddy rides it.
 


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