fits model: Cr250r. make: Honda. year: 1986–1996.

( Manufacturer Part Number: 7811030 ), ( Type: Reed Block ), ( Country Of Origin: Japan )
The **Honda 7811030 Intake Reed Block** for the **1986 1996 CR250R** is a meticulously crafted, high-performance component designed to enhance the breathing efficiency and throttle response of Honda s legendary two-stroke dirt bike. Engineered to replace the stock intake system, this aftermarket reed block features a precision-machined aluminum housing that houses a set of high-quality, spring-loaded reeds typically crafted from durable materials like stainless steel or beryllium copper to ensure optimal airflow while maintaining reliability under demanding off-road conditions. The design prioritizes smooth, progressive opening and closing of the reeds, reducing turbulence and allowing for a more linear power delivery, which translates to better low-to-midrange acceleration and a noticeable improvement in overall engine responsiveness. Whether you're tackling technical trails, competing in motocross, or pushing the limits in enduro racing, this reed block is built to deliver consistent performance without the risk of reed flutter or premature wear. Compatible with a wide range of carburetor setups, including the stock Mikuni or aftermarket alternatives like Keihin or Walbro, it integrates seamlessly into the CR250R s intake manifold, offering a straightforward upgrade that maximizes horsepower and torque while preserving the bike s stock reliability. For riders seeking a subtle yet effective boost in performance, this intake reed block is an excellent choice combining Honda s legendary engineering with aftermarket precision to elevate the CR250R s already formidable capabilities.
### Pros and Cons of Buying a Honda CR250R Intake Reed Block (Part Number 7811030, 1986 1996 Models)
#### **Pros:**1. **Performance Improvement** The stock intake reed block on the CR250R is often criticized for restricting airflow, limiting throttle response and top-end power. Replacing it with an aftermarket or upgraded version (such as the OEM-style 7811030 or a higher-flow alternative) can improve acceleration, especially at mid-to-high RPMs. This is particularly noticeable in stock or lightly modified engines.
2. **Easier Installation** The 7811030 reed block is a direct replacement for the stock unit, meaning it fits without requiring modifications to the intake manifold or carburetor. This makes it a straightforward upgrade compared to more complex aftermarket intake systems.
3. **Cost-Effective Upgrade** Compared to full intake kits or carburetor swaps, the reed block upgrade is relatively inexpensive. Prices typically range from $30 to $80, depending on whether it s a stock-style replica or a performance-oriented version (e.g., from companies like **Honda Power Sports, KTM, or aftermarket brands**).
4. **Compatibility** The 7811030 is designed specifically for the 1986 1996 CR250R, ensuring a perfect fit without the need for adapters or modifications. This reduces the risk of leaks or improper sealing.
5. **Maintains Stock Feel (If Used Correctly)** While it improves airflow, a well-tuned reed block can still provide a smooth, stock-like throttle response if paired with appropriate carburetor adjustments. This is preferable for riders who want more power without sacrificing drivability.
6. **Durability** The reed block is a relatively simple component with few moving parts. When properly maintained (cleaned and lubricated), it can last for thousands of miles without failure.
7. **Easy to Clean and Maintain** Unlike some aftermarket intakes that require frequent cleaning or special care, the reed block can be disassembled, cleaned, and regreased as part of regular maintenance. This keeps it performing optimally over time.
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#### **Cons:**1. **Limited Power Gain** While the reed block upgrade helps, it is not a dramatic power increase. Expect noticeable improvements in throttle response and mid-range torque, but the gains are modest compared to a full carburetor swap or intake manifold upgrade. For serious performance tuning, additional modifications (e.g., porting the carburetor, upgrading the exhaust) are still necessary.
2. **Requires Carburetor Adjustment** Simply replacing the reed block without adjusting the carburetor (jet settings) can lead to rich or lean conditions, affecting throttle response and fuel efficiency. Riders may need to consult a mechanic or use a carburetor tuning guide to optimize performance.
3. **Potential for Air Leaks** If the gasket or seals around the reed block are not properly seated or are worn, air can leak past the intake, reducing efficiency. This requires careful installation and occasional inspection.
4. **Not a Complete Intake Solution** The reed block alone does not address other potential airflow restrictions, such as a stock intake manifold or clogged air filter. For maximum benefits, pairing it with a high-flow air filter or a performance intake manifold is often recommended.
5. **Mixed Reviews on Stock-Replica Quality** Some aftermarket reed blocks marketed as "OEM replacements" may not match the quality or durability of the original Honda unit. Cheaper replicas might wear out faster or develop leaks over time. Investing in a reputable brand (e.g., **Honda s own replacement parts or trusted aftermarket suppliers**) is advisable.
6. **Minimal Aesthetic Change** Unlike full intake kits that alter the look of the bike, the reed block upgrade is largely invisible. If aesthetics are a priority, this is a minor consideration.
7. **Not a Cure for Engine Issues** If the engine is already worn or suffering from compression loss, a reed block upgrade will not restore lost power. It is best suited for bikes with healthy engines.
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### **Conclusion:**The **Honda CR250R reed block (7811030) is a practical and affordable upgrade** for riders looking to improve throttle response and mid-range power without undertaking a major modification. It is particularly useful for those who want a simple, reversible change that can be paired with other upgrades later. However, it is not a "miracle fix" and should be part of a broader tuning strategy if significant power gains are desired.
The upgrade is best suited for:- Riders who want a noticeable but modest power increase.
- Those who prefer a straightforward, low-cost modification.
- Enthusiasts who plan to combine it with other upgrades (e.g., carburetor tuning, exhaust, or intake manifold).
If the goal is **maximizing performance**, the reed block should be followed by carburetor adjustments and possibly a full intake system. For **daily riding or light track use**, it provides a worthwhile improvement without complexity.
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### **Recommendation:** **Buy the reed block upgrade if:**- You want a simple, cost-effective way to improve throttle response.
- Your bike s engine is in good condition.
- You are willing to adjust the carburetor afterward for optimal tuning.
- You plan to pair it with other performance upgrades in the future.
**Avoid or reconsider if:**- You expect dramatic power gains without additional modifications.
- You are on a tight budget and cannot afford carburetor adjustments.
- Your bike has significant engine wear or compression issues.
- You prefer a more aggressive-looking intake system.
**Best Practices:**1. **Choose a quality reed block** Opt for Honda s official replacement or a well-reviewed aftermarket brand to ensure durability.
2. **Adjust the carburetor** Work with a mechanic or use a tuning guide to fine-tune jet settings after installation.
3. **Monitor performance** Test the bike on the track or in a controlled environment to ensure the upgrade is working as intended.
4. **Maintain it regularly** Clean and regrease the reed block as part of routine maintenance to prevent wear.
For most riders, the **7811030 reed block is a worthwhile upgrade** that enhances the CR250R s performance without major hassle. However, it should be seen as a stepping stone rather than the final step in tuning.
Refer to item photos for physical condition. Rubber in good condition. Removed from a running 1996 Honda CR250.