Polaris Riders Forum banner

1 - 17 of 17 Posts

·
Premium Member
Joined
·
8,086 Posts
Discussion Starter #1
Provided by jim

Spring rates, what i can find.
03 predator front 80-160 progressive rear long spring 340, short 350

04 predator front same as 03 rear long 450, short 500

05 predator front 140 rear 400

06 predator same as 05 front and rear

07 predator,Le also same as 05,06

06 outlaw 500 front long 120 short 60 rear long120 short 60

07 outlaw 500,525 same as 06

08 IRS same again as 06

08 SRA 525 Front 120 single spring rear has long and short spring but no specs are given

08 MXR 450 , 525 LE Fronts are fox piggyback with the 120 and 60 # springs
 

·
Premium Member
Joined
·
2,096 Posts
I believe the 09's are 160 tall and short according to parts list.
 

·
Premium Member
Joined
·
2,096 Posts
The 09 rears are 160# for the tall and short springs, and the fronts are a 160 short with the same long as the 08's, which I believe are 120#
 

·
Premium Member
Joined
·
264 Posts
According to the polaris online part numbers, the front of the 09 450 mxr is 120 long and 140 short. The 525 has a 180 short. all the long ones are the same for what i can find, for the front on all 08,09's

The rear of mine (08 525 SRA), IS 500 long one, 8.5" and the short one just says progressive.

The rear of the 09's 400 long, 600 short for the 450's
and the 525 SRA is shown at 400 long and 500 short.

Also this rear spring above #7043093-293 400 in lbs ,is tha same on the 05,06,07 predators.


specs on these are brought up when searching for the item and price on snows polaris web site.
 

·
Registered
Joined
·
243 Posts
Ummmm, So now that the data is here in front of us, maybe it can be used to help answer my question. My '05 TLD SRA rear shock seemed to be sprung about right for my weight and riding style. My '08 SRA 525 now seems too stiff. If I ride it REALLY aggressively and really punch the jumps, it responds OK, but most of the time it sits and rides too high, and bucks back badly when I am riding a more relaxed pace. I am assuming the spring rate is too high. Am I on the right track here?
 

·
Premium Member
Joined
·
8,086 Posts
Discussion Starter #6
The shock on the outlaw sra has too long of a body, it is actually running out of shock on you
 

·
Registered
Joined
·
243 Posts
SSJEFF, if it is too long, what do I do with it? I have heard of guys having them shortened 3/4 inch. Do they then use longer springs too? What if I could re-design the mount points to lower the back end? Would I then want a longer spring too? This stuff confuses me.
 

·
Premium Member
Joined
·
264 Posts
You need to talk to ronnie of wilson racing up in jeffs sig. He probable still has my take off there yet, he had one ready for me.

Mine is now shorter by an inch or better, it lowered the rear a little, and the springs are not even close to what it was.

Do to front to rear balance, he will and you should want to do your fronts also.
 

·
Registered
Joined
·
143 Posts
SSJEFF are you saying that changing the rear spring rate 100 lbs will not help with the ride quality???
 

·
Premium Member
Joined
·
164 Posts
A bit of a correction on the IRS Outlaws.... The front & rear are not the same.

Fronts are part# 7043197 = 120 lb/in

The rears however, are a different part number - 7043133 - which it seems are often also used on the front of the straight axle quads... same length spring & same number of active coils with a slightly thicker wire.

Polaris doesn't list the rate... but comparing them to the 7043197 using a spring rate calculator it would seem they are around 135 lb/in.

#7043481 for the rear of the 09 is listed as 160 lb/in.
 

·
Premium Member
Joined
·
164 Posts
Something I forgot to mention above...

The 160 lb/in main spring for the 09 rears doesn't mean the 09 comes with a stiffer rear spring... in fact, the spring package for 09 is softer all the way around.... by a LOT.

The small secondary springs in 07 & 08 were there for no real reason other than to take up the slack so your adjusters couldn't move when the shock went to full extension if you weren't running any preload. They were always in full coil-bind. So the effective spring rate was the rate of the main springs.

Front = 120 lb/in
Rear = 135 lb/in (estimated)


2009 is a far different story... the small secondary springs (at least as listed by Polaris) have enough rate to become a factor. In fact, if you do the math....

Front = (120 x 180) / (120 + 180) = 72 lb/in
Rear = (160 x 160) / (160 + 160) = 80 lb/in

Quite a difference from 07-08.
 

·
Registered
Joined
·
122 Posts
Would it be beneficial to take the springs off of my IRS front shocks which i have removed and replaced with Fox Podium's and swap them with the fox springs ?

Thanks
 

·
Registered
Joined
·
785 Posts
what length shocksare say the 08 IRS? would it be wise to go a little longer to keep the ground clearance high even with a soft preload? igetthatrace quads turn/handle better w/ lower peg height, but i'ld rather have the ground clearance and softer, plush ride. any thoughts?
 

·
Registered
Joined
·
730 Posts
So are these the correct spring rates for an 08 450 MXR??

08 MXR 450 , 525 LE Fronts are fox piggyback with the 120 and 60 # springs

Rears are 160#??

Someone please fill me in as to if I got the right info out of here. Trying to make some decisions about shocks.
 

·
Registered
Joined
·
730 Posts
Anyone have a comment on the rear spring rates?
 

·
Premium Member
Joined
·
264 Posts
Rear spring is not 160 on the solid axles

The 08's SRA'S are the same, the rears are 500, 8.5"
Have no idea what is meant by the short one, other than its a progressive spring. I might have my old one out in the garage yet, i'll have to get it checked.

SPRING-COMP,500#/IN,REAR,I.RED (7043370-293) $44.98

Just for comparision, my rear now is a 300 8" main, along with a 900 tender
 
1 - 17 of 17 Posts
Top