I have a 2011 American Eagle 45 with 500 ISM K2 Spartan. Front is 16,600 IFS. I currently have the Bilstein "Gas-Hydraulic" shocks. #24-191241 They have 50K and 5 Years on them. How will the Koni shocks differ from the Bilsteins? Which Koni shock is the correct for the front? ( Mike, 11/23/2024 )

Hello, the Koni shocks are not a gas pressure shock, so they collapse more easily to allow the suspension to absorb the impact rather than resisting compression . This allows the suspension to "soak up " the bumps, rather than fighting the suspension movement. The Koni's control the rebound so you get a nice ride as well as good handling . Your chassis calls for the :

99B-3234 - FRONT Spartan K2, K3 MountainMaster IFS1460 / IFS1660 / 16K+ / Tiffin Allegro Bus w/ PowerGlide Chassis Reyco IFS (Koni EVO)

Hello

I am looking for front shocks for my 2007 Newmar Kountry Star DP. It rides on the IFS1260 front suspension, Spartan Mountain Master chassis.

What do you recommend please? I am looking at the Koni 90-2815.

What would you recommend for the rear shocks please?

Thank you.
Keith ( Keith, 06/29/2024 )

Hello, on the Spartan' sit is helpful to get existing shock #'s if possible to confirm the application , The 2815's MAY be correct as well as the

8805-1009 - REAR Spartan Chassis / Tiffin PowerGlide (Koni FSD)

( see notes regarding lower mounting bolts )

i have a mm spartan 1260 rayco granning ifs front axle, which koni would fit..would it ride better then the oem blisteens ( carl bethmann, 11/21/2023 )

The Koni 90-2815's SHOULD be correct for that front suspension. They will definitely ride better than Bilsteins due the Koni's being strictly hydraulic, not high gas pressurized like Bilstein. Koni's control the "rebound" but allow the suspension to "soak up" the impacts, rater than resist compression . It is a good idea to verify the mounts and dimensions listed on the product page.

I have a 2002 Newmar Mountain Aire 4096.
I have the IFS 1370 Spartan Chassis.
Looking for your recommendation for new front and rear shocks to smooth out porpoising to improve overall ride. Thanks in advance, Ron ( Ron Tharaldson , 05/27/2023 )

Hello Ron, the 90-2815's should be correct for the front based on your information, the rears should be the 8805-1009 Koni FSD's . Please check the notes on the product page about lower mounting bolts.

https://www.ultrarvproducts.com/Koni-8805-1009-Spartan-Rear-Tiffin-Rear

I HAVE A 03 DUTCH STAR SPARTAN IFS 1200, IT CALLS FOR THE 90-2815 ADJUSTABLE KONI WHICH I LIKE THE ADJUSTABLE BUT WOULD THE 99B-3234 GIVE MORE CONTROL OF THE PORPOISING. THEY ARE A BIT SHORTER BUT HAVE THE SAME MOUNTS. ( WALLY EATON, 03/16/2023 )

Hi Wally, there could be interference at the lower mount with the 99B-3234's, as the 90-2815 has a slightly extended lower eyelet . I would recommend sticking with the adjustable and set them to 3/4 of the way tight, that will allow for future adjustment to compensate for wear , and control the rebound/porpoising .