Race sag with lowering link

Knoby
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Knoby
Edited Date/Time 6/24/2014 7:58pm
I have searched but I cannot find the answer I'm looking for. If a lowering link reduces rear ride height by 15 mm should I subtract that from my race sag? For example, if my sag setting is 105 mm stock, would 90 mm be the new setting?
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Paw Paw 271
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Paw Paw 271 6/5/2014 5:20pm
6/5/2014 5:20pm Edited Date/Time 6/5/2014 5:21pm
No....Use the standard race sag. the lowering link does not effect the position of the shock stroke.
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mxb2
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mxb2 6/5/2014 7:36pm
6/5/2014 7:36pm
x2^^
Knoby
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Knoby 6/24/2014 6:37am
6/24/2014 6:37am
Well I finally got around to setting / checking my race sag. With the stock link installed my race sag in fine at 105mm. With the lowering link I loose 12.5mm of race sag with the shock spring adjusted as high as possible on the shock body. So, since I cannot get sag into spec with the lowering link, does that mean I have to buy a lighter spring?
Paw Paw 271
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Paw Paw 271 6/24/2014 7:50am
6/24/2014 7:50am
So what is your static ( free) sag and what is your race sag at this time?

Paw Paw

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CarlinoJoeVideo
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CarlinoJoeVideo 6/24/2014 8:01am
6/24/2014 8:01am
Maybe you need less of a lowering link? It seems that changing springs would effect a lot of other things in a bad way.

Which linkage did you buy? I'm sure they can give you some answers. Did you lower the front end also? That might take some weight off the back end.
Knoby
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Knoby 6/24/2014 8:03am
6/24/2014 8:03am Edited Date/Time 6/24/2014 8:06am
Static sag is at 34.5mm and race sag is 92.5mm with the Pro Circuit lowering link. Forks at 7mm to the top of the clamps, stock is 5mm.
Paw Paw 271
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Paw Paw 271 6/24/2014 1:48pm
6/24/2014 1:48pm
You need a softer spring for the shock.

Paw Paw
Knoby
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Knoby 6/24/2014 3:36pm
6/24/2014 3:36pm
Thanks for the advice Paw Paw! Just needed confirmation from someone else with more knowledge than I.
Paw Paw 271
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Paw Paw 271 6/24/2014 7:15pm
6/24/2014 7:15pm
Go to racetech.com and use the spring calculator.

Paw Paw
Knoby
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Knoby 6/24/2014 7:58pm
6/24/2014 7:58pm
Yeah I've been there and done that. I do know what spring rates I need thanks to them. Just don't know what is installed on my bike therefore I'm measuring everything down to the half millimeter to be certain I'm not wasting money on a new spring setup. Thanks again
RussellSimpson 2/3/2025 12:48pm
2/3/2025 12:48pm Edited Date/Time 2/3/2025 12:50pm
Knoby wrote:
Yeah I've been there and done that. I do know what spring rates I need thanks to them. Just don't know what is installed on my...
Yeah I've been there and done that. I do know what spring rates I need thanks to them. Just don't know what is installed on my bike therefore I'm measuring everything down to the half millimeter to be certain I'm not wasting money on a new spring setup. Thanks again

I've got the pro circuit link and knuckle on my 23 Kawi  450 and I had to go up from the stock 5.4 to a 5.7 spring rate to get my sag numbers correct..I'm 190lbs and have my rear wheel moved back in the swingarm with 13/51 gearing and Two links longer than stock chain length!.                                                                           Pro -Circuit recommends/Suggests that you go 1 to 2 rates stiffer spring rate when using they're link!

I got 38 mm free sag  and 104 race sag using a FC 5.7 shock spring..

 

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