fits model: Rmk, 600, 800, 850, Indy. make: Polaris.

( Manufacturer Part Number: 1801002 ), ( Part Type: Screw ), ( Warranty: 30 Day ), ( California Prop 65 Warning: Powersports Parts Contain And/or Generate Used Oil, Waste Fluids, Grease, Fumes And Particulates, All Known To The State Of California To Cause Cancer, Birth Defects, And Reproductive Harm. ), ( Genuine Oem: Yes ), ( UPC: 194722478787 )
The **Polaris 1801002 Screw-On M4x20 (1800007 RMK Indy 600/800/850 Khaos)** is a precision-engineered, high-performance mounting hardware designed exclusively for Polaris ATV models, including the iconic **Indy 600, 800, and 850 series**, as well as the rugged **Khaos** line. Crafted from durable **grade 5.8 steel**, this **M4x20 screw** features a **fine-thread, metric 4mm diameter** with a **20mm length**, ensuring a secure and vibration-resistant fit in critical applications where reliability is paramount. The **screw-on design** allows for quick and easy installation without the need for permanent welding or additional fasteners, making it an ideal solution for aftermarket modifications, accessory mounting, or factory upgrades. Engineered to withstand the demands of off-road use, this component is resistant to corrosion and wear, even in harsh conditions, ensuring long-lasting performance on trails, in the dirt, or in extreme environments. Whether used for mounting **side-by-side accessories, lighting systems, winches, or other aftermarket enhancements**, this screw provides the strength and precision required to maintain structural integrity while allowing for easy removal and reinstallation. Its compatibility with the **RMK (Rear Mount Kit) system** on the Indy and Khaos models further enhances its versatility, making it a must-have for riders looking to customize their ATVs without compromising durability. With its **clean, streamlined profile and robust construction**, this screw is a testament to Polaris commitment to both performance and practicality, ensuring that modifications remain both functional and long-lasting.
### **Polaris 1801002 Screw-On M4x20 (RMK Indy 600/800/850/Khaos) Pros and Cons**
#### **Pros:**1. **Compatibility with Multiple Models** The **M4x20 screw-on** bolt is designed to fit several Polaris RMK models, including the **Indy 600, 800, 850, and Khaos**, reducing the need for multiple part numbers. This makes it a cost-effective solution if you own or work on multiple bikes.
2. **Easy Installation** Screw-on bolts are generally simpler to install compared to press-fit or riveted parts. They can be removed and replaced without specialized tools, making maintenance and repairs more accessible.
3. **Standardized Threading** The **M4x20** specification is a common metric thread size, meaning replacement parts are widely available from third-party suppliers if needed.
4. **Durability** Polaris uses high-quality materials for critical components like this bolt, ensuring it can withstand the stresses of off-road riding, including vibrations and impacts.
5. **Cost-Effective for Bulk Purchases** If you frequently work on these models or own multiple bikes, buying in bulk (e.g., from Polaris dealers or authorized distributors) can reduce per-unit costs.
6. **Prevents Loosening** Properly torqued screw-on bolts help maintain structural integrity, reducing the risk of component failure due to vibration or wear.
7. **Warranty Coverage** If purchased directly from Polaris or an authorized dealer, the bolt may come with warranty protection against defects.
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#### **Cons:**1. **Potential for Over-Tightening** Unlike press-fit or riveted bolts, screw-on bolts can loosen over time due to vibrations. If not properly torqued (either too loose or too tight), they may fail, leading to safety risks or damage to surrounding components.
2. **Tool Dependency** While easier to install than press-fit bolts, you still need the correct **socket wrench or impact driver** and **torque wrench** to ensure proper tightening. Improper tools can lead to stripped threads or damage.
3. **Limited Availability Outside Polaris Network** While M4x20 bolts are standard, finding **OEM-quality replacements** from non-Polaris sources may be difficult, increasing the risk of counterfeit or substandard parts.
4. **Potential for Rust or Corrosion** If the bolt is not properly lubricated or exposed to moisture (common in off-road conditions), rust can form, making removal difficult in the future.
5. **Higher Cost Than Basic Fasteners** Compared to generic bolts, Polaris OEM bolts are more expensive due to quality control and engineering standards. Third-party alternatives may not meet the same durability standards.
6. **Risk of Cross-Threading** If installed incorrectly, the bolt can cross-thread the hole, making removal nearly impossible without damaging the part.
7. **Wear Over Time** Like all mechanical parts, screw-on bolts can wear out, especially in high-stress applications. Regular inspection is necessary to prevent failure.
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### **Conclusion:**The **Polaris 1801002 M4x20 screw-on bolt** is a **practical and reliable choice** for maintaining or upgrading RMK Indy 600/800/850/Khaos models. Its **multi-model compatibility, ease of installation, and durability** make it a strong option for riders and mechanics who prioritize convenience and quality. However, **proper installation techniques, regular maintenance, and sourcing from trusted suppliers** are crucial to avoid common issues like loosening, corrosion, or improper tightening.
If you frequently work on these bikes, **buying in bulk from an authorized Polaris dealer** ensures authenticity and warranty coverage. For occasional repairs, **third-party M4x20 bolts** (from reputable brands) can be a cost-effective alternative, though OEM parts are generally safer for critical applications.
### **Recommendation:**- **Buy from an authorized Polaris dealer** if you need **OEM quality** and warranty protection.
- **Use a torque wrench** to ensure the bolt is tightened to the manufacturer s specifications (typically **25-30 Nm** for such applications).
- **Inspect bolts regularly** for signs of wear, corrosion, or loosening, especially after rough rides.
- **Consider third-party options** only if you are confident in their quality, as substandard bolts can compromise safety.
- **Keep spare bolts on hand** for quick repairs, as off-road conditions can lead to unexpected bolt failures.
**Final Verdict:** This bolt is a **solid, functional part** that, when properly installed and maintained, will serve reliably in Polaris RMK models. For best results, **prioritize quality sourcing and correct installation techniques**.
OEM Polaris Screw Part # 1801002.