HONDA CI691 Cdi Box Ignition

( Manufacturer Part Number: CI691 ), ( Part Type: Ignition Box )

Review HONDA Genuine Cdi Ignition Box fits RECON TRX EX 250 2001–2005

The **Honda CI691 TRX 250 EX Recon CDI Ignition Box (2001 2005 models)** is a meticulously engineered, high-performance component designed to elevate the reliability and ignition efficiency of Honda s legendary TRX 250 EX Recon off-road motorcycle. This ignition box is a direct replacement for the factory CDI (Capacitor Discharge Ignition) unit, ensuring seamless compatibility with the bike s electrical system while delivering superior spark performance. Built to withstand the harshest off-road conditions, the CI691 is constructed from durable, high-grade materials, including robust plastic housings and reinforced wiring harnesses that resist vibration, moisture, and extreme temperatures critical factors for riders pushing their machines to their limits. The unit features a **high-output ignition coil** and a **precision-tuned CDI module**, which work in tandem to generate a stronger, more consistent spark, improving cold-start reliability, throttle response, and overall engine efficiency. Whether tackling rocky trails, deep mud, or steep climbs, this ignition box ensures consistent power delivery, reducing misfires and prolonging the life of the spark plugs and ignition components. Ideal for both stock and modified TRX 250 EX Recon models, this aftermarket upgrade is a favorite among enthusiasts seeking to restore or enhance the performance of their bikes without compromising on durability. With its straightforward installation process requiring minimal wiring adjustments and proven track record of performance, the CI691 is an essential component for any rider looking to maximize the potential of their Honda TRX 250 EX Recon.

### **Pros and Cons of Buying a Honda TRX 250 EX Recon (2001 2005) with CDI Ignition Box**

#### **Pros**

1. **Reliability and Durability** Honda s TRX 250 EX Recon is known for its robust build, especially in off-road conditions. The engine and transmission are designed to handle rough terrain, and with proper maintenance, they can last for decades.

2. **Off-Road Capability** The Recon model is specifically engineered for serious off-roading, featuring a long-travel suspension, high ground clearance, and a durable frame. It performs well in mud, rocks, and sand, making it a great choice for adventurers.

3. **Fuel Efficiency** Compared to larger ATVs, the 250cc engine is relatively fuel-efficient, allowing for longer rides on a single tank of gas.

4. **Simplicity of Maintenance** The 250cc single-cylinder engine is straightforward to work on, with readily available parts. Basic repairs (oil changes, spark plugs, air filters) can be done by most owners with minimal tools.

5. **Resale Value** Honda ATVs, particularly older models, hold their value reasonably well, especially if well-maintained. The Recon line is still sought after by off-road enthusiasts.

6. **CDI Ignition Box (2001 2005 Models)** The CDI (Capacitor Discharge Ignition) system improves spark reliability, reducing misfires and improving engine performance. This makes the bike more reliable than older models with traditional ignition systems.

7. **Versatility** The TRX 250 EX can be used for trail riding, farming, hauling light loads, and even light-duty utility work, making it a practical choice for various applications.

8. **Community and Support** There is a strong community of Honda TRX owners, with forums, repair guides, and aftermarket parts available. This makes troubleshooting and modifications easier.

---

#### **Cons**

1. **Age and Wear** Models from 2001 2005 are now over 20 years old, meaning parts may be harder to find or more expensive than on newer models. Rust, worn suspension, and aging belts can be common issues.

2. **Fuel Injection Reliability** While the CDI system is an improvement, fuel injectors and carburetors (depending on the model year) can clog or fail over time, requiring periodic cleaning or replacement.

3. **Suspension Degradation** After years of off-roading, shocks, springs, and bushings may be worn out, leading to a rough ride or handling issues. Replacing suspension components can be costly.

4. **Electrical Issues** Older ATVs are prone to electrical gremlins, such as faulty wiring, failing sensors, or battery problems. The CDI system, while better than older ignition setups, is not immune to wear.

5. **Emissions and Modern Standards** If you plan to ride on public trails, check local regulations, as older ATVs may not meet current emissions standards in some areas. Some states require smog checks or restrict older models.

6. **Weight and Power Limitations** At 250cc, the engine is not as powerful as larger ATVs (e.g., 450cc or 500cc models), which may limit its performance in extreme off-road conditions or when carrying heavy loads.

7. **Availability of Parts** While Honda parts are widely available, some specialized components (e.g., rare suspension parts, specific CDI-related items) may require ordering from specialty suppliers.

8. **Potential for Hidden Damage** Older ATVs may have hidden issues like frame cracks, bent axles, or worn drivetrains. A thorough inspection by a mechanic is essential before purchase.

---

### **Conclusion**

The **Honda TRX 250 EX Recon (2001 2005) with a CDI ignition box** is a solid choice for riders who prioritize reliability, off-road capability, and simplicity. Its Honda reputation for durability, combined with the improved CDI system, makes it a more dependable option than earlier models. However, its age means that maintenance and part replacement will be more frequent and potentially costly over time.

If you are an experienced rider, enjoy off-roading, and are willing to invest time in upkeep, this ATV can be an excellent long-term companion. For beginners or those seeking a more modern, low-maintenance machine, a newer model (or a well-documented used model with recent service records) may be a better fit.

---

### **Recommendation**

- **Buy if:** You need a rugged, reliable off-road ATV for trail riding, farming, or utility work; you are prepared for maintenance; and you find a well-documented example with a clean service history.

- **Avoid if:** You want a low-maintenance machine, plan to ride heavily on public trails with strict emissions rules, or cannot commit to regular upkeep.

- Verify the CDI ignition box is functioning properly (test for spark, check wiring).

- Inspect suspension components (shocks, springs, bushings) for wear.

- Check the drivetrain (chain, sprocket, final drive) for excessive wear or rust.

- Test the brakes and hydraulic lines for leaks.

- Review service records for oil changes, belt replacements, and major repairs.

- Have a mechanic perform a pre-purchase inspection to uncover hidden issues.

For the best value, consider a **2003 2005 model**, as they are slightly newer and may have fewer wear-and-tear issues. If possible, opt for a **rebuilt or restored example** to minimize long-term headaches.

Details:

In good working condition normal signs of wear off 2001 Trx250ex running. Genuine Honda TRX 250 EX RECON CDI Ignition Box 2001 - 2005. Sold as seen in photos ready to install.

part #: ci691 prices

• $49.99-$74.98

specifications cyclevintagee:

• for models: Trx, Ex, 250, Recon
• for makes: Honda
• for years: 2001-2005
• mpn: Ci691
• part type: Ignition Box

returns cyclevintagee:

• policy: No Returns

payments cyclevintagee:

• wallet: Apple-pay
• credit card: Diners-club
• other

seller cyclevintagee:

• city: San Antonio, Texas
• # reviews: 751
• rating: 99.3%

offer cyclevintagee:

• availability: In Stock
• options: Ship-to-home
• started: May 28, 2026
• quantity: 1
• sold: 0

shipping cyclevintagee:

• class: Standard, Expedited
• cost: $0.00
• transit: 3-7 Days
• type: Fixed
• service: USPS Ground Advantage, USPS Priority Mail
• carrier: USPS

general cyclevintagee:

• Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories
• condition: Used

Honda CI691 Is Similar To:

• 00x31-195-6000 Honda Genuine Parts Nos Owners Manual New Original Vintage Repair (29% similar) This manual is new but does have signs of shelf wear on the outer cover. The inside looks like it has never been opened. This is an original owners manual for a 1983 honda XL80S. There are 67 pages of photos and detailed information. These are original books and not a reproduction. Great part for ...(April 8th, 2018)
• 04302-918-000 Honda Genuine Parts Lighting (39.3% similar) lighting fits the following model's and components:honda ATV 1976 ATC90 a headlight tailwind 1978 1977 with no year ATC70K1 ATC70 ATC90K2 ATC90K1 ATC90K3 taillight. Honda lighting switch assembly. Oem nos new, but no packaging. Honda switch assay...(January 11th, 2018)
• 04503-918-010 Honda Carrier Genuine Oem Nos (37% similar) This is not a take off part, or reproduction. This honda carrier fits the following model's and components:honda ATV us 90, ATC90K1 ATC90 ATC90K2 ATC90K3. Being offered for offer is a genuine honda nos rare ACT accessory part. This is a rare unused oem vintage part. It is in its original packaging, ...(December 27th, 2018)
• 06110-207-000 Honda Genuine Ca95 Gasket (30.8% similar) Oem part number: the actual item is shown in above photos. Please feel free to ask any questions about this item. Honda nos ref HG038. Up for sale is this genuine honda gasket kit as seen in the above photos. Shipping: I only ship within the USA unless otherwise noted. Authenticity:every item I sell...(August 22nd, 2017)
• 06111-098-s02 Honda New Genuine Ct70 (35.6% similar) New genuine honda gasket kit rice...(July 24th, 2017)
• 06111-430-305 Honda Genuine Nos Oem (32% similar) Complete minus reed block gaskets. Nos oem gaskets set. Free shipping...(January 16th, 2018)
• 061a1-ka5-t90 061a1-ka5-690 Honda New Genuine (25.5% similar) Part 061A1-KA5-T90PART gasket kit - replaces 061A1-KA5-690 model count 1CR500R-F CR500R off road rice...(July 24th, 2017)
• 06435-kz4-j41 Honda Genuine Parts Rear Brake Pads Oem Crf (37.7% similar) It should fit the following model's: FITS:2012 CRF250X2009 CRF250R2008 CRF450R2008 CRF250X2008 CRF250R2007 CRF450R2007 CRF250X2007 CR250R2007 CR125R2006 CRF450R2006 CRF250X2006 CRF250R2006 CR250R2006 CR125R2005 CRF450R2005 CRF250X2005 CRF250R2005 CR250R2005 CR125R2004 CRF450R2004 CRF250X2004 ...(November 4th, 2018)
• 08f75-mch-100l Honda Original Oem Genuine Deluxe Backrest Pad (31.7% similar) This product is designed to fit the honda VTX1800C, unsure on if any model years are incompatible...(October 25th, 2018)
• 11350-444-000 Honda Right Stator Cover Cr Elsinore Ahrma Cdi Chain (30.5% similar) Very nice stater chain guard cover off a CR125 no cracks. Has some slight chain rub on back side but not visible when installed. Hard to find in this condition. Perfect for that restoration comes down to the details...(October 25th, 2018)
• 11352-kv7-670 Honda Oem Nos Genuine (28% similar) All my parts are in stock new old see fitment below free shipping this is a genuine honda nos part, gasket bin AF-1244S part KV7-670 1985 CH150 kit b left crankcase cover ac CH150D 1986 1987...(April 8th, 2017)