fits model: Yfz450. make: Yamaha. year: 2004–2008.

( Brand: Procom ), ( Manufacturer Part Number: 4069-P166716-ATV )
The **ProCom 4069-P166716 ATV Performance CDI Ignition System** is a high-performance, direct-replacement ignition component meticulously engineered to elevate the power, reliability, and throttle response of the **2004 2008 Yamaha YFZ450 ATV**. Designed with precision and built to exceed OEM specifications, this advanced CDI (Capacitor Discharge Ignition) unit replaces the stock ignition system, delivering a noticeable boost in horsepower, smoother acceleration, and enhanced engine efficiency. Crafted from high-quality, durable materials, the ProCom 406716 features a robust internal circuit board with optimized capacitance and discharge timing, ensuring consistent spark generation even under demanding conditions. Its compact yet rugged design allows for a seamless fit within the Yamaha s engine bay, maintaining original wiring and mounting points for hassle-free installation. Whether tackling rough terrain, hauling heavy loads, or pushing the limits of off-road performance, this ignition system provides the reliable, high-energy sparks needed to keep the **YFZ450 s liquid-cooled, 450cc parallel-twin engine** running at peak performance. Ideal for enthusiasts seeking a cost-effective upgrade without sacrificing compatibility or durability, the ProCom 4069-P166716 is a proven solution for those who demand more from their ATV delivering stronger starts, improved cold-weather reliability, and a noticeable performance edge over stock components. Backed by ProCom s reputation for quality and performance, this ignition system is a smart investment for anyone looking to maximize the potential of their Yamaha YFZ450.
### Pros and Cons of buying a PROCOM 4069-P166716 ATV Performance CDI for a 2004-2008 Yamaha YFZ450 ATV
#### **Pros:**1. **Enhanced Performance** The PROCOM CDI module is designed to improve throttle response, power delivery, and overall engine performance. It can help the Yamaha YFZ450 achieve better acceleration and smoother power transitions, especially in off-road or high-demand situations.
2. **Compatibility** This specific part (4069-P166716) is engineered to work directly with the 2004-2008 Yamaha YFZ450, ensuring proper integration with the stock ECU and wiring harness. It avoids the need for extensive modifications or aftermarket tuning.
3. **Ease of Installation** Unlike full ECU replacements or complex tuning setups, the PROCOM CDI module is relatively straightforward to install. It typically involves plug-and-play wiring, making it accessible for DIYers without advanced mechanical or electrical skills.
4. **Improved Fuel Efficiency (Under Certain Conditions)** Some users report better fuel economy in certain driving modes due to optimized ignition timing and fuel delivery, though results can vary based on riding style and terrain.
5. **Durability and Reliability** PROCOM is a well-regarded brand in the ATV and off-road performance market, known for producing high-quality, long-lasting components. The CDI module is built to withstand the demands of off-road use.
6. **Legal Compliance** Unlike some aftermarket tuning solutions that may require modifications to meet emissions standards, the PROCOM CDI module is designed to remain within legal limits for most regions, avoiding the need for smog checks or compliance issues.
7. **Cost-Effective Upgrade** Compared to full engine swaps or high-end performance kits, the PROCOM CDI module offers a budget-friendly way to significantly boost performance without major capital investment.
8. **Maintains Stock Reliability** Since it works with the existing engine and drivetrain, the risk of catastrophic failure due to incompatible modifications is minimized. The Yamaha s stock components remain intact, reducing long-term maintenance concerns.
---
#### **Cons:**1. **Limited Power Gains** While the PROCOM CDI module provides noticeable improvements, it may not deliver the same level of power as a full engine rebuild, turbo kit, or high-end aftermarket ECU. Expect modest gains rather than dramatic performance leaps.
2. **No Adjustable Settings** Unlike programmable ECUs or tuners, the PROCOM CDI module has fixed settings tailored for the YFZ450. Users cannot customize parameters like ignition timing or fuel maps, which may limit fine-tuning for specific riding conditions.
3. **Potential for Overheating or Stress** In extreme conditions (e.g., prolonged high-RPM use or aggressive riding), the stock engine may still struggle to handle the additional power, leading to increased wear on components like the clutch, transmission, or drivetrain.
4. **Dependence on Stock Components** If the Yamaha s stock ignition system, wiring, or sensors are degraded, the PROCOM module may not perform optimally. Users should ensure their ATV is in good mechanical condition before installation.
5. **Mixed User Experiences** While many users report positive results, others may notice minimal improvements or even slight regressions in performance. Results can vary based on the ATV s condition, riding habits, and terrain.
6. **No Warranty on Stock Engine** The PROCOM module itself may come with a warranty, but the stock Yamaha engine is not covered under the manufacturer s warranty if damage occurs due to increased stress from the CDI upgrade.
7. **Compatibility Concerns with Mods** If the ATV has other aftermarket modifications (e.g., exhaust, intake, or suspension changes), the PROCOM CDI may not fully optimize performance for those setups. Some tuning may still be required.
8. **Resale Value Impact** ATVs with aftermarket performance mods, including CDI modules, may have lower resale value compared to stock or lightly modified units. Buyers may perceive the ATV as less desirable due to potential reliability concerns.
---
### **Conclusion:**The PROCOM 4069-P166716 ATV Performance CDI is a **solid, cost-effective choice** for Yamaha YFZ450 owners looking to enhance throttle response, power delivery, and overall drivability without undertaking a full engine rebuild. It strikes a balance between ease of installation, compatibility, and performance gains, making it suitable for both casual riders and enthusiasts who want a noticeable upgrade.
However, it is not a "miracle fix" or a replacement for proper maintenance. The module s effectiveness depends on the ATV s existing condition, and users should manage expectations regarding power gains. For those seeking **maximum performance**, additional mods (e.g., turbocharging, high-flow air intakes, or a full ECU tune) may be necessary, but the PROCOM CDI is a practical starting point.
If your primary goal is **better throttle feel, smoother power, and modest performance improvements** without complex tuning, this is a worthwhile investment. If you re looking for **drastic power increases or customizable tuning**, you may need to explore other options.
---
### **Recommendation:** **Buy the PROCOM CDI module if:**- You want a **simple, plug-and-play performance upgrade** for your YFZ450.
- You ve ruled out major engine modifications and want to enhance stock performance.
- Your ATV is otherwise in good condition, with no major mechanical issues.
- You re satisfied with **modest power gains** and improved throttle response rather than extreme performance.
**Avoid or reconsider if:**- You expect **dramatic power increases** or plan to combine this with other aggressive mods.
- Your ATV has **significant wear or mechanical problems** that could limit the module s effectiveness.
- You prefer **adjustable tuning options** (e.g., programmable ECUs) for fine-tuning performance.
- You re concerned about **resale value** or potential reliability issues with increased engine stress.
**Final Verdict:** The PROCOM 4069-P166716 CDI is a **reliable, low-risk upgrade** for the Yamaha YFZ450, offering tangible benefits for the price. It s ideal for riders who want a **practical performance boost** without the complexity of full engine modifications. Pair it with regular maintenance to ensure longevity and optimal results.
Compatibility: Years: Make: model: Application: Notes: 2007 - 2008 YamahaYFZ450 SE, 2004. Parts without fitment are to be assumed universal and may require vehicle modification. This is helpful if you are buying multiple items.: Brand: Procom, model Number: 4069-P166716-ATV.
I need to exchange an item. Procom Performance CDI for 2004 - 2008 Yamaha YFZ450 ATV: This increases rev 1,000 rpm over stock.