MBRP 5009-M373859-59 Performance Exhaust Cat

( Brand: Mbrp ), ( Manufacturer Part Number: 5009-M373859-59 ), ( Part Type: Exhaust )

Review MBRP Series Performance Exhaust Arctic Cat fits TRAIL ZR EFI 800 2002–2003

The **MBRP 5009-M373859-59 Trail Performance Exhaust System** is a meticulously engineered aftermarket upgrade designed specifically for the **2002-2003 Arctic Cat ZR 800 EFI**, delivering a striking blend of performance, durability, and aesthetic appeal. Crafted from high-quality **409 stainless steel**, this exhaust system is built to withstand the rigors of off-road use, ensuring long-lasting performance even under the most demanding conditions. The **full cat-back design** eliminates the need for additional modifications, offering a seamless replacement that retains the stock exhaust s mounting points while significantly enhancing both power and sound. With a **dual-tone finish** featuring a polished header and a matte black tailpipe, this exhaust not only turns heads with its sleek, modern look but also reduces weight compared to stock systems, contributing to improved handling and acceleration. The **optimized flow path** and **larger-diameter piping** reduce backpressure, allowing the ZR 800 s EFI engine to breathe more freely, resulting in a noticeable boost in horsepower and torque. Whether tackling rough trails or cruising on open roads, this exhaust system ensures a deeper, more aggressive exhaust note that resonates with the adventurous spirit of the Arctic Cat. Built to meet or exceed OEM standards, the **MBRP Trail Performance Exhaust** is a premium choice for riders seeking a balance of performance gains and timeless style without compromising reliability.

### **Pros and Cons of buying a MBRP 5009-M373859-59 Trail Performance Exhaust for a 2002-2003 Arctic Cat ZR 800 EFI**

1. **Improved Exhaust Flow and Horsepower** The Trail Performance exhaust is designed to enhance airflow, which can lead to better engine efficiency and slight power gains, especially in off-road applications where stock exhausts may restrict performance.

2. **Lighter Weight** Compared to stock exhaust systems, aftermarket options like this one are often constructed with lighter materials (such as stainless steel or aluminum), reducing overall weight, which can improve handling and acceleration.

3. **Enhanced Durability** High-quality aftermarket exhausts are typically built to withstand the rigors of off-road use, including rocks, mud, and rough terrain, better than some stock systems that may be prone to rust or fatigue.

4. **Better Sound** If you prefer a deeper, more aggressive exhaust note, this exhaust provides a more pronounced sound compared to the stock muffler, which can be beneficial for enthusiasts who enjoy a louder, sportier tone.

5. **Compatibility with Modifications** Since this exhaust is designed for the Arctic Cat ZR 800 EFI, it should integrate well with other performance upgrades (such as headers, turbochargers, or fuel system tweaks) if you plan to further modify your engine.

6. **Reduced Backpressure** By reducing exhaust restriction, the system can help the engine breathe better, potentially improving throttle response and reducing lag, especially in high-RPM situations.

7. **Aesthetic Appeal** Aftermarket exhausts often have a more aggressive or polished look, which can enhance the visual appeal of your ATV, especially if you prefer a custom or performance-oriented appearance.

---

1. **Potential Warranty Voiding** Installing an aftermarket exhaust may void the manufacturer s warranty, particularly if the Arctic Cat warranty explicitly prohibits non-OEM modifications.

2. **Noise Complaints** While some riders appreciate a louder exhaust, others may find the sound too aggressive, leading to complaints from neighbors or in areas with noise restrictions. Check local regulations before installation.

3. **Possible Fitment Issues** Even if the exhaust is listed as compatible, slight variations in mounting points or exhaust pipe routing could require adjustments, such as cutting or bending components to ensure a proper fit.

4. **Cost Relative to Stock** While aftermarket exhausts are often more affordable than full performance exhaust systems, they may still be more expensive than keeping the stock exhaust, especially if additional modifications (like new hangers or brackets) are needed.

5. **Maintenance Considerations** Some aftermarket exhausts may require more frequent inspections for leaks, especially in off-road conditions where the system is more likely to encounter debris or impacts.

6. **Potential Power Loss Without Tuning** While the exhaust itself may improve airflow, if the engine s fueling or ignition timing isn t adjusted (via a tune or ECU modification), you might not see significant power gains, and in some cases, could experience minor performance drops due to richer fuel mixtures.

7. **Resale Value Impact** Modified ATVs, especially those with aftermarket exhausts, may have lower resale value compared to stock or lightly modified units, depending on the market and buyer preferences.

---

The **MBRP 5009-M373859-59 Trail Performance Exhaust** is a solid choice for riders looking to enhance the performance, durability, and sound of their 2002-2003 Arctic Cat ZR 800 EFI, particularly if they prioritize off-road use and a more aggressive exhaust tone. The benefits in airflow, weight reduction, and robustness make it a worthwhile upgrade for enthusiasts willing to trade off minor noise considerations and potential warranty implications.

However, if you value maintaining stock appearance, noise compliance, or warranty coverage, the stock exhaust may be preferable. Additionally, if you plan to pursue further modifications (such as turbocharging or significant fueling changes), pairing this exhaust with a tune or ECU adjustment would maximize its benefits.

- **Buy it if:** You want improved exhaust flow, a louder sound, and better durability for off-road use, and you re okay with potential noise restrictions or warranty trade-offs.

- **Skip it if:** You prefer keeping the ATV stock for resale value, noise sensitivity is a concern, or you plan to make extensive engine modifications without proper tuning.

- **Consider pairing it with:** A performance tune (if available for your model) to ensure optimal power delivery and prevent potential drivability issues.

For the best results, verify fitment with your specific ATV (some years may have slight variations) and ensure compliance with local noise laws before installation.

Details:

MBRP Trail Series Performance Exhaust for 2002 - 2003 Arctic Cat ZR 800 EFI: 2 Year warranty, Improved throttle response, Quick and simple installation, Huge weight savings, Made from 304 stainless, Uses stock springs hangers, Dino proven performance, Flo-bench tested back pressure. Compatibility: Years: Make: model: Application: Notes: 2003 - 2003 Arctic Cat Mountain Cat 800 EFI 144, 2002 Arctic LE 151, Cater EFI, 2001 8 900 Early Build, Son Pro, 9 2001 Arctic LE, 1M, Build. This is helpful if you are buying multiple items. I need to exchange an item.

Brand: MBRP, model Number: 5009-M373859-59. Parts without fitment are to be assumed universal and may require vehicle modification.

part #: 5009m37385959 price

• $364.99

specifications exhaustsnowmobilee:

• for models: Zr, Efi, 800, Trail
• for makes: Arctic, Arctic-cat
• for years: 2002-2003
• brand: Mbrp
• mpn: 5009-m373859-59
• part type: Exhaust

offer exhaustsnowmobilee:

• quantity: 7
• started: February 26, 2026
• availability: In Stock
• sold: 0
• options: Ship-to-home

seller exhaustsnowmobilee:

• city: Boise, ID
• rating: 99.8%
• # reviews: 78561

shipping exhaustsnowmobilee:

• transit: 2-5 Days
• class: Standard
• cost: $0.00
• service: Standard
• type: Fixed

returns exhaustsnowmobilee:

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

payments exhaustsnowmobilee:

• wallet: Paypal
• credit card: Mastercard
• other

general exhaustsnowmobilee:

• Parts Accessories > Snowmobile Parts > Exhaust
• condition: New

Mbrp 5009-M373859-59 Is Similar To:

• 00000000 Mbrpperformance Exhaust Mbrp Performance 882963116833 (37.1% similar) Very nice used condition. I will get pics up soon was on a 2007 Yamaha hazer low miles...(December 6th, 2017)
• 1026012 Mbrp Performance Exhaust Race (41.3% similar) 95 size: 241-90102TO 241-90103T 241-90200T 241-90200R 241-90201T 241-90301T 241-90301R Mbrp performance EXHAUST1 year warranty better throttle response proven hp gains on moonlighter weight easy install stainless steel body great sound direct fit to stock exhaust trail SERIES6 diameter muffler body ...(April 21st, 2017)
• 1030113 Mbrp Performance Exhaust Standard Series (43.8% similar) Help buy shipping-globally...(February 13th, 2017)
• 103x206 Mbrp Performance Exhaust Standard (43.1% similar) ...(March 29th, 2017)
• 1040012 Mbrp Performance Exhaust Race (41.3% similar) Photos are for illustration purposes only. Buyer should verify part fitment with manufacturer...(November 23rd, 2017)
• 1050515 Mbrp Race Series Performance Exhaust (49.6% similar) 7AM-8PM Mon Fri, 7AM-6PM sat sun. Diameter muffler body loudest version of canister very light weight the air resources board Arab does not permit use aftermarket emission-related parts that alter fuel ratio an emission-controlled vehicle. Specs color - primary silver canister muffler type silencer ...(December 21st, 2016)
• 1066215 Mbrpperformance Exhaust Mbrp Performance (38% similar) Its stainless steel casing is hard-wearing and always looks great while the laser-cut brackets ensure a perfect fit easy installation. Manufacturer: Mbrp inc. Better throttle response 2 hp GAIN15 lb weight savings easy install stainless steel body great Mbrp sound direct fit to stock EXHAUST4 ...(August 21st, 2017)
• 1070217 Mbrpperformance Exhaust Mbrp Performance 882963116703 (38.7% similar) Maximum exhaust flow is achieved through Mbrp exclusive sound attenuation design. Brand new Mbrp performance race series snowmobile muffler for ski-door stainless product features: this canister was built racing. Its stainless steel casing is hard-wearing and always looks great while the laser-cut ...(October 27th, 2017)
• 1095306 Mbrp Performance Exhaust Trail (44.1% similar) ...(March 23rd, 2017)
• 1097526 Mbrp Performance Exhaust Trail (44.1% similar) ...(March 22nd, 2017)
• 1110415 Mbrp Performance Exhaust Race (41.3% similar) As such accept back of any or hassles. Id: mfg price: 299. Never ship an item back in the manufacturers packaging, always use over-box. Mbrp performance exhaust race silencer mfg: mfg...(September 22nd, 2017)