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02-16-2025, 10:46 AM
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#1
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Senior Member
Join Date: Mar 2019
Posts: 2,534
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Koni EVO shocks
My 2022 40IP came from the factory with Koni FSD front shocks. The rebound control is anemic. Has anyone replaced the FSDs on the front with EVOs?
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02-16-2025, 11:35 AM
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#2
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Senior Member
Join Date: Feb 2020
Location: Corrales, NM
Posts: 277
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I replaced mine with EVOs last August. Noticeably less purposing when going over bumps and undulations in the road. Well worth the change from my experience. I had 43,000 miles on the original shocks when I made the change.
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2021 Allegro Bus 37AP
2019 Wrangler Rubicon Unlimited
Corrales, NM
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02-17-2025, 09:10 AM
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#3
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Community Administrator
Tiffin Owners Club
Join Date: Sep 2013
Location: DFW, Texas
Posts: 24,467
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Thanks for the positive review on the EVOs. I just got two in for the front of our IH and will install as soon as the weather improves. With 60k miles on the coach, it's time to change.
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 2017 Phaeton 40IH XSH Maroon Coral - Power Glide Chassis with IFS
Previous '15 Tiffin Allegro RED 38QRA and '06 Itasca Sunrise 35A
White '24 Jeep JLU Wrangler Willys
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02-17-2025, 01:48 PM
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#4
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Senior Member
Join Date: Mar 2019
Posts: 2,534
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LT Dan,
Where did you buy them?
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02-17-2025, 03:35 PM
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#5
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Community Administrator
Tiffin Owners Club
Join Date: Sep 2013
Location: DFW, Texas
Posts: 24,467
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Quote:
Originally Posted by bentjm
LT Dan,
Where did you buy them?
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I ordered them from Ultra RV Products at $265 each. I contacted them to confirm the proper one for the ZF IFS suspension and they said the 99B-3262 is the correct one.
https://www.ultrarvproducts.com/Koni...Chassis-ZF-IFS
__________________
2017 Phaeton 40IH XSH Maroon Coral - Power Glide Chassis with IFS
Previous '15 Tiffin Allegro RED 38QRA and '06 Itasca Sunrise 35A
White '24 Jeep JLU Wrangler Willys
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02-18-2025, 12:16 PM
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#6
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Senior Member
Tiffin Owners Club Freightliner Owners Club
Join Date: Apr 2012
Location: Southern NM
Posts: 3,840
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Quote:
Originally Posted by Lt Dan
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Thanks, good to know, next on my list of things to do.
__________________
2018 Allegro Bus 37AP
2014 Phaeton 40 QBH (sold)
2022 Jeep JLURD
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02-21-2025, 06:02 PM
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#7
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Senior Member
Tiffin Owners Club
Join Date: Mar 2015
Location: Wainscott NY
Posts: 389
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Lt. Dan. Please post the results of the ride after your install. Thanks Stanley
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Stan & Mary, and Lucy a Canine Princess in Training....
2021 Tiffin Allegro Bus 35cp, 2014 Cadillac SRX toad
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03-06-2025, 10:05 AM
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#8
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Senior Member
Join Date: Mar 2019
Posts: 2,534
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I just finished installing the Evos. Took a couple of hours. The hardest part is accessing the top of the shocks. Had to buy a 15/16 ratcheting wrench.
Will be driving 270 miles tomorrow. I will know about the 15 mile mark when I cross the Dames Point bridge in Jacksonville if the Evos have the rebound control I am looking for.
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03-07-2025, 02:42 PM
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#9
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Senior Member
Join Date: Mar 2019
Posts: 2,534
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First impression is very positive.
The Evos have much more rebound control without sacrificing any ride comfort. The coach also seems much more settled taking a corner.
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03-08-2025, 11:22 AM
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#10
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Senior Member
Tiffin Owners Club
Join Date: Jun 2017
Location: Odessa, FL
Posts: 1,149
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Quote:
Originally Posted by bentjm
First impression is very positive.
The Evos have much more rebound control without sacrificing any ride comfort. The coach also seems much more settled taking a corner.
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Thanks for the feedback!
__________________
2023 Tiffin Allegro Bus 45OPP
2019 Birkshire 34QS - Traded
2020 Jeep Cherokee Trailhawk with BlueOx/AF1
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03-16-2025, 05:11 PM
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#11
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Senior Member
Join Date: Mar 2019
Posts: 2,534
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I have driven 1,000 miles since installing the EVOs.
I would definitely recommend this upgrade. Not much money in RV terms. Easy to install. And, they work great.
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03-16-2025, 05:45 PM
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#12
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Senior Member
Join Date: May 2019
Posts: 960
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My best upgrade of all time was the CHF brackets, second was the Koni shocks and third was getting rid of the L-shaped sofa.
__________________
2016 Tiffin Allegro Open Road 36LA
Starlink Mini
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