- Stock Status: In Stock
- Manufacturer: Koni
- Model: 99B-3234SP1
- Weight: 13.00lb
- SKU: 99B-3234SP1
- UPC: 99B-3234SP1
- Location: 8C5-2/3
Koni Special - Limited Time Only
Available Options
Heavy-Duty Front Shock Upgrade – KONI EVO High Force for Spartan K2 / K3 / MountainMaster and Tiffin Allegro Bus
Upgrade the ride control of your diesel motorhome with the KONI 99B-3234SP1 High Force EVO Front Shock, designed for Spartan and Tiffin PowerGlide chassis equipped with Reyco Granning Independent Front Suspension (IFS). This shock is the High Force version of the KONI 99B-3234, featuring firmer valving to provide additional damping control for coaches that experience excessive front-end bounce.
The High Force EVO shock is recommended for motorhomes with 18K+ front axle ratings or coaches that are frequently operated near their maximum GVWR. The firmer valving helps control suspension movement more effectively, improving ride stability and driver confidence on large diesel pusher motorhomes.
The KONI EVO 99 Series shocks utilize patented open intake valve technology to provide excellent ride comfort while maintaining strong damping force when needed. This design allows the suspension to absorb rough road surfaces smoothly while still controlling large suspension movements that can cause excessive bounce or instability.
Compared to earlier KONI FSD shocks, the EVO 99 series features a 50mm piston, nearly 40% larger than the 36mm piston used in previous designs. The larger piston allows the shock to handle greater forces while operating at lower internal pressure, resulting in improved durability, stronger damping control, and better ride quality on heavy motorhome chassis.
Originally developed for high-end European motorcoaches, the KONI EVO 99 series is now being introduced to the North American RV market to provide premium ride comfort and superior suspension performance for large diesel motorhomes.
Product Benefits:
- High Force valving provides additional damping for heavy motorhomes
- Recommended for 18K+ front axle ratings or heavily loaded coaches
- Large 50mm piston improves durability and suspension control
- Patented open intake valve technology improves ride comfort
- Ideal for Reyco Granning independent front suspension systems
- Reduces excessive front-end bounce and suspension oscillation
- Improves steering stability and overall ride quality
Ideal For:
- Diesel pusher Class A motorhomes
- Motorhomes with Reyco Granning independent front suspension
- Coaches experiencing excessive front suspension bounce
- Heavy front axle loads or near-GVWR operation
- Replacing worn-out factory or Bilstein shocks
Applications:
- 2004-Current Spartan MountainMaster – Reyco IFS 1460S (Does NOT fit IFS1460T)
- 2004-Current Spartan MountainMaster – Reyco IFS 1660
- 2004-2021 Spartan K2 – Reyco IFS 1660
- 2017-Current Spartan K2 – Reyco IFS 1700
- 2017-Current Spartan K2 – Reyco IFS 2000
- 2017-Current Spartan K3 – Reyco IFS 2000
- 2008-2010 Tiffin Allegro Bus – PowerGlide Chassis with Reyco IFS 1460S
The KONI 99B-3234SP1 High Force EVO front shock is designed for heavy diesel motorhome chassis equipped with Reyco Granning independent front suspension, delivering increased damping force and improved stability for demanding RV applications.
Specifications:
| Collapsed Length | Extended Length | Upper Mount | Lower Mount |
| 12.24" | 17.32" | Eye 3/4" | Eye 3/4" |
Special Notes:
- High Force version of KONI 99B-3234 EVO shock.
- Recommended for 18K+ front axle ratings or heavily loaded motorhomes.
- Does NOT fit Reyco IFS1460T suspension due to clearance limitations.
- Some Spartan IFS systems may require mounting kit APK-10000.
- Bilstein cross references: BE5-6199-H0, BE5-6199-H1, 24-061999.
Shock Comparison
| Shock | Piston Size | Ride Comfort | Body Control |
|---|---|---|---|
| Factory OEM | Small | Poor | Poor |
| KONI FSD | 36mm | Good | Good |
| KONI EVO | 50mm | Excellent | Excellent |
The state of California requires that this warning be posted for people purchasing products that reside in California.
WARNING: Products may contain one or more chemicals known in the State of California to cause cancer and/or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov
