KIMPEX 1840-K439521-40 Rear Suspension Gas Shock Cat

( Brand: Kimpex ), ( Manufacturer Part Number: 1840-K439521-40 ), ( Part Type: Suspension Shock )

Review KIMPEX Rear Suspension Gas Shock Arctic Cat fits ZR 500 1998–2001

The **Kimpex 1840-K439521-40 Rear Suspension Gas Shock** is a high-performance, precision-engineered suspension component designed exclusively for the **1998 2001 Arctic Cat ZR 500**, a legendary off-road dirt bike known for its aggressive handling and relentless performance. This gas-charged shock absorber is meticulously crafted to deliver superior damping, stability, and ride comfort while maintaining the ZR 500 s signature sharp, responsive feel. Built with a **high-quality, durable steel body**, the shock is engineered to withstand the extreme forces of high-speed jumps, rough terrain, and heavy cornering, ensuring long-lasting reliability even under the most demanding conditions. The internal **gas-charged nitrogen system** eliminates air bubbles, providing consistent damping performance across varying temperatures and altitudes, while the **adjustable rebound and compression settings** allow riders to fine-tune the suspension to their exact preferences whether seeking a firmer setup for aggressive riding or a softer feel for improved comfort on long rides. The shock s **robust mounting hardware** ensures a secure and precise fit, reducing flex and enhancing overall handling, while its **sealed construction** protects against dust, debris, and moisture, prolonging its lifespan and maintaining optimal performance. Whether tackling deep sand, rocky trails, or technical jumps, this Kimpex shock delivers the perfect balance of control, responsiveness, and durability, making it an essential upgrade for any ZR 500 owner looking to push the limits of their bike s capabilities.

### **Pros and Cons of buying a Kimpex 1840-K439521-40 Rear Suspension Gas Shock for a 1998-2001 Arctic Cat ZR 500**

1. **Direct Fitment** The shock is specifically designed for the 1998-2001 Arctic Cat ZR 500, ensuring compatibility without modifications.

2. **Gas-Charged Design** Provides better damping control, reduces oil foaming, and improves ride stability compared to traditional coil-over shocks.

3. **Durability** Kimpex is a reputable brand known for manufacturing high-quality aftermarket suspension components, often built to withstand heavy use.

4. **Improved Ride Comfort** Helps smooth out rough terrain, reducing fatigue during long rides.

5. **Better Handling** Enhances stability and control, particularly useful for off-road and aggressive riding styles.

6. **Easy Installation** Designed for straightforward replacement, requiring minimal tools and expertise.

7. **Cost-Effective Upgrade** More affordable than OEM shocks, offering a balance between performance and price.

1. **Aftermarket Brand** While Kimpex is reliable, it may not match the exact build quality or longevity of OEM shocks, which are engineered specifically for Arctic Cat s suspension system.

2. **Potential Wear Over Time** Gas shocks can degrade faster than expected if not properly maintained, especially in extreme conditions.

3. **Limited Warranty** Kimpex typically offers a shorter warranty compared to OEM parts, which may not cover long-term wear or failure.

4. **Compatibility Concerns** While the part number suggests fitment, slight variations in mounting points or bushings could require adjustments.

5. **No Performance Tuning** Unlike high-end aftermarket shocks, this is a standard replacement it won t offer advanced features like adjustable rebound or compression damping.

6. **Potential for Leaks** Gas shocks can develop leaks over time, especially if the seals degrade, leading to loss of pressure and reduced performance.

---

### **Conclusion**

The **Kimpex 1840-K439521-40 gas shock** is a solid, budget-friendly option for upgrading the rear suspension of a 1998-2001 Arctic Cat ZR 500. It provides noticeable improvements in ride comfort, handling, and durability compared to stock shocks, making it a practical choice for riders who want better performance without a significant investment. However, it is not a premium aftermarket or OEM replacement, so it may not last as long under extreme conditions or heavy use.

If you prioritize **cost efficiency, ease of installation, and decent performance gains**, this shock is a reasonable choice. If you seek **long-term reliability, advanced tuning, or OEM-level quality**, you may want to consider higher-end aftermarket brands or original equipment shocks.

- **Buy it if:** You need a straightforward, affordable upgrade to improve ride quality and handling without complex modifications.

- **Consider alternatives if:** You plan to ride aggressively or frequently, prefer longer warranties, or want more advanced suspension tuning options.

- **Verify fitment** by checking with the seller or consulting Arctic Cat service manuals to ensure no hidden compatibility issues.

- **Maintain properly** by checking for leaks, ensuring seals are intact, and servicing as needed to extend its lifespan.

Details:

Gas-charged shocks represent the leading edge in shock technology, Kimpex gas offer fade-free operation even after hours on the trail, Sold each, Shock springs and clips not included. This is helpful if you are buying multiple items. Parts without fitment are to be assumed universal and may require vehicle modification. I need to exchange an item.

1998 - 2001 Arctic Cat ZR 600 EFI Rear.: Brand: Kimpex, model Number: 1840-K439521-40. Kimpex Rear Suspension Gas Shock for 1998 - 2001 Arctic Cat ZR 500 Rear: Application.

part #: 1840k43952140 price

• $100.63

specifications snowmobileshocksoi:

• for models: Zr, 500
• for makes: Arctic, Arctic-cat
• for years: 1998-2001
• brand: Kimpex
• mpn: 1840-k439521-40
• part type: Suspension Shock

returns snowmobileshocksoi:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

general snowmobileshocksoi:

• Parts Accessories > Snowmobile Parts > Shocks Suspension
• condition: New

payments snowmobileshocksoi:

• credit card: Discover
• wallet: Google-pay
• other

shipping snowmobileshocksoi:

• cost: $0.00
• type: Fixed
• service: Standard
• transit: 2-6 Days
• class: Standard

seller snowmobileshocksoi:

• city: Sparks, NV
• # reviews: 78349
• rating: 99.8%

offer snowmobileshocksoi:

• availability: In Stock
• started: February 24, 2026
• sold: 0
• quantity: 4
• options: Ship-to-home

Kimpex 1840-K439521-40 Is Similar To:

• 298758 Kimpex New Shock Item (29.4% similar) I am selling a new...(December 21st, 2018)
• 0114-226 0114-227 Kimpex Rear Slide Suspension Springs Arctic Cat (49.7% similar) Kimpex rear slide suspension springs 227 part no jag - undercarriage and TRACK1985 TRACK1984 el tiger TRACK1981 f c l TRACK1980 a pantry electric start manual panther TRACK1979 TRACK1978 tiger' 5000 6000 track...(October 3rd, 2018)
• 04-0165-25 Ref 3604-299 3604-386 3604-454 3604-048 Kimpex Idler Wheel W-bearing Arctic (24.1% similar) Kimpex idler wheel w bearing arctic cat Yamaha ref 039 pair meets the oem specification and more you can repair at a fraction of price. Shipping charges listed above apply to the continental us.: 45. Please verify your junk bulk mail folder as our e-mail reply may end up in there. Satisfaction ...(March 2nd, 2017)
• 04-0562-21 Kimpex Idler Wheel Bearing Arctic Cat Green Pair (38.8% similar) Satisfaction guaranteed before opening a request. You can also leave us a message. Please verify your junk bulk mail folder as our e-mail reply may end up in there. 630 ref 690 arctic cat green pair meets the oem specification and more you can repair at a fraction of price. Shipping charges listed ...(March 11th, 2018)
• 04-0562-30 Kimpex Idler Wheel Bearing Arctic Cat Grey Pair (39.1% similar) Satisfaction guaranteed before opening a request. You can also leave us a message. Please verify your junk bulk mail folder as our e-mail reply may end up in there...(March 11th, 2018)
• 04-063-21 Kimpex Idler Wheel Arctic (31.3% similar) Please verify your junk bulk mail folder as our e-mail reply may end up in there. Kimpex idler wheel arctic cat john Deere Kawasaki Polaris skid lime green pair meets the oem specification and more you can repair at a fraction of price. Shipping charges listed above apply to the continental us. You ...(November 29th, 2017)
• 04-116-70 Kimpex Idler Wheel Black Arctic Cat Trail Pair (39.7% similar) With bearing and bushing. 750 inch 19MM. Bushing part number, cir clip bearing 2RS-DL sold as a pair fits on: arctic cat trail. Please verify your junk bulk mail folder as our e-mail reply may end up in there. Kimpex idler wheel w bearing black ref. Ref code: Kimpex idler wheel color: black ...(July 1st, 2018)
• 04-116-96s Black Ref 3604-047 3604-420 3604-486 Kimpex Idler Wheel W-bearing Arctic (24.5% similar) You can also leave us a message at inches 143MM bearing series: 6304-2RS sold as pair fits on: arctic cat, Polaris, Yamaha. Satisfaction guaranteed before opening a request. Kimpex idler wheel w bearing arctic cat Polaris Yamaha ref pair meets the oem specification and more you can repair at a ...(January 1st, 2017)
• 04-126-06 Kimpex Bogie Suspension Cross Shaft 779422645464 (40.6% similar) L thread size: 3/8 in. X 16 1/8 in. Oem-quality replacements. On the continent of north America. Photos are for reference only. Actual product may differ from the item shown in photograph...(September 13th, 2018)
• 04-126-07 Kimpex Slide Suspension Cross Shaft (41.6% similar) ...(October 22nd, 2018)
• 04-126-08 Kimpex Slide Suspension Cross Shaft For Mirage (45.6% similar) Products found to be defective with in a 60 day period of purchase shall returnable us at our expense. Electronic parts must go back to the manufacturer for bench testing. Catalogue images for rad part number: ad oversized and hazardous items typically ship by truck can have substantial shipping ...(July 18th, 2018)