95nm rear spring, YES!

brad8266 · Sep 7, 2021

Finally got around to swapping the stock 85 rear spring to a 95 while I had the shock out for an oil change. This is a must if you are my weight (180 lbs). Transformed the driveability and performance of the rear end greatly. Much more stable and controlled for my weight. I didn’t think it would feel this different but i couldn’t be happier. Can’t wait to hit the track this weekend, I’m hoping the added stability (and added confidence) gets my past where I’ve been holding back. The problem I’ve had on track is corner exit. The rear would plant too much and the transition out would cause disruption in the rear so I would tend to not come out as hard as I’d like. Based off the spirited ride I took on a twisty road it is much improved now. Was on the gas earlier and harder post apex.

1. installed preload 11mm
2. Eye to eye 314mm
3. Sag: 20 rider, 8 static

endodoc · Sep 7, 2021

brad8266 said:
Finally got around to swapping the stock 85 rear spring to a 95 while I had the shock out for an oil change. This is a must if you are my weight (180 lbs). Transformed the driveability and performance of the rear end greatly. Much more stable and controlled for my weight. I didn’t think it would feel this different but i couldn’t be happier. Can’t wait to hit the track this weekend, I’m hoping the added stability (and added confidence) gets my past where I’ve been holding back.

1. installed preload 11mm
2. Eye to eye 314mm
3. Sag: 20 rider, 8 static

Good info. Are you 180 with the gear?

brad8266 · Sep 7, 2021

endodoc said:
Good info. Are you 180 with the gear?

I’m 180 without gear. 208 with gear.

I wish I was 180 in gear still haha

endodoc · Sep 7, 2021

Cool thanks. I think I have 100. It’s a short spring on the Desmo shock. Wondering how different it is or at all from the standard length spring same rate. I’m 210 without pads. The Mupo shock came with a 90. It looks to be the same dims as the Ohlins spring. Wondering if I can use the Ohlins spring. Lot easier than hunting down a Mupo spring.

endodoc · Sep 7, 2021

Need to figure this out. Suspension setup is not in my wheelhouse.

brad8266 · Sep 7, 2021

endodoc said:
Need to figure this out. Suspension setup is not in my wheelhouse.

I would try to find the mupo spring instead of trying to go down the ohlins spring route. Too many variables to deal with. Doesn’t Omaha sell mupo stuff?

endodoc · Sep 7, 2021

brad8266 said:
I would try to find the mupo spring instead of trying to go down the ohlins spring route. Too many variables to deal with. Doesn’t Omaha sell mupo stuff?

Yea probably a safer bet. I got the whole kit (forks, damper, shock and triple) from Mupo through a distributor. I will try Omaha. Thanks

BP PanigaleV4S · Sep 7, 2021

Year of bike?

There was a linkage change 2020+, just so everyone is apples to apples.

endodoc · Sep 7, 2021

bp_SFV4 said:
Year of bike?

There was a linkage change 2020+, just so everyone is apples to apples.

I’m using the Desmo SBK link.

BP PanigaleV4S · Sep 7, 2021

endodoc said:
I’m using the Desmo SBK link.

V4 forum, not the xx99 forum.

I loved the shock position on the xx99 bikes. It made everything easier.

endodoc · Sep 7, 2021

My bad.

chris16 · Sep 7, 2021

a Spring is a Spring is a Spring.
i use a Eibach race car Spring in a WP Shock.

Taz · Sep 8, 2021

I wonder what weight the stock 85 N/mm spring is suited for. At 180 lbs / 82 kg I should think you were close to the "average" rider. I'm 230 lbs / 105 kg in my birthday suit so no chance with stock springs for me! I went 105 N/mm in the rear, and my experience with the stiffer spring was basically exactly as you described.

bu2tler · Sep 8, 2021

The stock spring rate ist for rider with gear: 80 – 90 kg (176.36 – 198.42 lb)

Keith197 · Sep 8, 2021

I'm 175# and dropped to a 85 rear spring, forks are 1.0/1.05 on v4r

brad8266 · Sep 8, 2021

bp_SFV4 said:
Year of bike?

There was a linkage change 2020+, just so everyone is apples to apples.

2020 so it has the new linkage and softer spring.

brad8266 · Sep 8, 2021

bu2tler said:
The stock spring rate ist for rider with gear: 80 – 90 kg (176.36 – 198.42 lb)

And I’m sure that’s just fine for normal riding. I didn’t have any problems with my stock 85 spring riding on the road or when I wasn’t running as fast on track (not that I’m even fast now). At my pace on the track the rear is unstable and slowing me down.

Recommended weights are just that, recommendations. There are variables that come into play.

greggiacona · Sep 8, 2021

So I’m 235 lbs in my birthday suit, probably 255 lbs geared up. Do I need a 105 spring? 2012 1199S with Ohlins TTX
Greg

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chris16 · Sep 8, 2021

brad8266 said:
Recommended weights are just that, recommendations. There are variables that come into play.

one of these is happiness, maybe the most important.
you can change to the most recommended, make everything right with sag and so on...
awaiting great things...and the .... slows you down and let you alone with a big wtf.
i had a lot of fun with a too weak spring, wheel was acting of cause but never unstable, bouncing, bottoming(ok some times it has) etc.
now with a 14% harder spring(racetech recommendation) i have a complete new bike, the feeling is...not the same as before, i hope i learn how to use it.
when i ask myself, what was the Problem with the softer spring, i have no real answer.

Alkhater · Sep 9, 2021

chris16 said:
one of these is happiness, maybe the most important.
you can change to the most recommended, make everything right with sag and so on...
awaiting great things...and the .... slows you down and let you alone with a big wtf.
i had a lot of fun with a too weak spring, wheel was acting of cause but never unstable, bouncing, bottoming(ok some times it has) etc.
now with a 14% harder spring(racetech recommendation) i have a complete new bike, the feeling is...not the same as before, i hope i learn how to use it.
when i ask myself, what was the Problem with the softer spring, i have no real answer.

But it’s not a subjective idea. The spring should allow the full range of desired motion.

You mentioned never unstable, bouncing and bottoming all in the same sentence. That doesn’t make sense, even though bouncing is a consequence of damping and not the spring.

The subjective issue is what the recommendations are actually for. There’s a lot of variables at play here… application (track/road), speed, style to account for; therefore it’s my opinion that the question should be who is recommending and for what.

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95nm rear spring, YES!

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