ARROW 71904AK Race Slip Exhaust Smt 790 890

( Brand: Arrow ), ( Manufacturer Part Number: 71904AK ), ( Mounting Style: Slip-on ), ( Type: Muffler ), ( Machine Type: Street Motorcycle ), ( Manufacturer Warranty: 2 Years ), ( Color: Black ), ( Vintage Part: No ), ( Placement On Vehicle: Exhaust ), ( Performance Part: Yes )

Review ARROW Race tech Slip on Exhaust Ktm 790 890 Smt fits ADVENTURE 2019–2026

The **Arrow 71904AK Race-Tech Slip-On Exhaust** is a precision-engineered aftermarket exhaust system designed specifically for the **KTM 790 SMT and 890 SMT Adventure** models produced between **2019 and 2026**. Crafted from high-quality **4130 chromoly steel**, this exhaust delivers an uncompromising blend of performance, durability, and aesthetic appeal, making it a standout upgrade for riders seeking both power and refinement. The **Race-Tech slip-on design** ensures a seamless fit, maintaining the factory exhaust s structural integrity while enhancing airflow and exhaust note. With its **dual-tone matte black and polished finish**, the exhaust adds a sleek, modern contrast to the bike s aggressive styling, blending seamlessly with the Adventure s rugged yet sporty aesthetic.

Under the hood, the **71904AK** excels with its **high-flow, straight-through piping**, which reduces backpressure and allows the engine to breathe more efficiently, resulting in a noticeable increase in horsepower and torque. The exhaust s **optimized tuning** ensures a balanced power delivery, with a deeper, more aggressive throat that delivers a throaty, sporty exhaust note ideal for riders who appreciate a dynamic riding experience. The **slip-on installation** is both time-efficient and reversible, requiring no modifications to the factory exhaust system, making it a hassle-free upgrade that retains the original s structural support.

Built to withstand the demands of both on-road and off-road adventures, the **Race-Tech slip-on exhaust** features **heat-treated, fully welded construction** for exceptional strength and longevity. The **polished tip and matte finish** not only enhance the bike s visual appeal but also help dissipate heat more effectively, reducing the risk of overheating during prolonged rides. Whether cruising on paved highways or tackling rough trails, this exhaust system ensures that the **KTM 790/890 SMT Adventure** remains both powerful and reliable, delivering an exhilarating ride with every revolution.

For riders who demand performance without sacrificing style, the **Arrow 71904AK Race-Tech Slip-On Exhaust** is the perfect blend of engineering precision and aesthetic flair a must-have upgrade for those looking to push their Adventure to new heights.

### **Pros and Cons of buying a Arrow 71904AK Race-Tech Slip-On Exhaust for KTM 790/890 SMT Adventure (2019-2026)**

#### **Pros**

1. **Performance Enhancement** The Race-Tech slip-on exhaust is designed to improve exhaust flow, reducing backpressure and allowing the engine to breathe more efficiently. This can lead to better throttle response, especially in mid-range power delivery, which is beneficial for both sporty riding and highway cruising.

2. **Lightweight Construction** Made from high-quality stainless steel, the exhaust is significantly lighter than the stock unit, reducing overall bike weight. This can improve handling, acceleration, and fuel efficiency, particularly noticeable in agile maneuvers.

3. **Improved Sound** While not as aggressive as a full system, the Race-Tech exhaust provides a sportier, more dynamic tone compared to the stock muffler. It retains some of the original bike s character while adding a more pronounced exhaust note.

4. **Compatibility** Specifically designed for the KTM 790/890 SMT Adventure (2019-2026), ensuring a precise fit without modifications. The slip-on design allows for easy installation without altering the stock headers or catalytic converter.

5. **Durability** Arrow is a reputable manufacturer known for high-quality exhaust systems. The Race-Tech model is built to withstand the demands of adventure riding, including off-road use, though it may require periodic maintenance in harsh conditions.

6. **Maintains Stock Features** Unlike some aftermarket exhausts, this slip-on retains the stock catalytic converter and O2 sensors (if applicable), meaning it can still pass emissions tests in regions where this is required. However, some slip-ons may require sensor removal, so verify this before purchase.

7. **Easy Installation** Designed as a slip-on, it can be installed without welding or major modifications, making it a straightforward upgrade for DIYers or mechanics.

8. **Aesthetic Appeal** The Race-Tech exhaust has a sleek, aggressive design that enhances the bike s sporty look, complementing the KTM s modern styling.

---

#### **Cons**

1. **Limited Power Gain** While it improves exhaust flow, the power increase is modest compared to a full exhaust system with headers. Expect noticeable but not dramatic improvements in acceleration or top-end speed.

2. **Potential Emissions Issues** Some slip-ons may interfere with O2 sensors or catalytic converter efficiency, leading to check engine lights or emissions failures in regions with strict regulations. Always check if the system is sensor-compatible or requires removal.

3. **Noise Level** While sportier than stock, the exhaust note may still be tame for riders seeking a louder, more aggressive sound. Those wanting a dramatic change might prefer a full system with a high-flow muffler.

4. **Cost Relative to Benefits** At a premium price, the performance gains may not justify the investment for casual riders. The upgrade is more worthwhile for enthusiasts who prioritize handling and slight power improvements.

5. **Weight Savings Are Moderate** While lighter than stock, the weight reduction is incremental. For riders focused on extreme weight savings, a full exhaust system with headers would be more effective.

6. **Durability in Harsh Conditions** Off-road or heavy-duty use may accelerate wear on the exhaust, especially if the bike is ridden aggressively. Regular inspections are recommended.

7. **Installation Challenges** Although slip-ons are easier than full systems, some riders may find the process tricky if they lack mechanical experience, particularly with securing clamps and ensuring a proper seal.

8. **Resale Impact** Some buyers may perceive aftermarket exhausts as less desirable, potentially affecting resale value. However, this depends on the market and the bike s overall condition.

---

### **Conclusion**

The **Arrow 71904AK Race-Tech Slip-On Exhaust** is a solid upgrade for the KTM 790/890 SMT Adventure, offering a balance of performance, weight reduction, and ease of installation. It s particularly suited for riders who want subtle but meaningful improvements in handling, throttle response, and exhaust tone without committing to a full exhaust system. The lightweight design and compatibility make it a practical choice for adventure riders who prioritize agility and efficiency.

However, those seeking dramatic power gains, louder exhaust notes, or significant weight loss may find a full exhaust system with headers more beneficial. Additionally, riders in regions with strict emissions laws should verify sensor compatibility to avoid potential issues.

### **Recommendation**

- You want a straightforward, high-quality exhaust upgrade with minimal modifications.

- You prioritize improved exhaust flow, slight power gains, and a sportier sound.

- You ride a mix of on-road and light off-road and want better handling without drastic changes.

- You re comfortable with a moderate investment for noticeable but not extreme performance improvements.

- You seek aggressive power gains or a much louder exhaust (consider a full system with headers).

- You re in a region with strict emissions laws and the exhaust may interfere with sensors.

- You re on a tight budget and prefer more dramatic upgrades for the cost.

- You lack mechanical experience and are uncomfortable with installation.

**Final Verdict:** The Arrow Race-Tech slip-on is a **strong mid-tier upgrade** that delivers real benefits without overhauling the bike. It s ideal for riders who want a refined, performance-oriented upgrade without the complexity of a full exhaust swap. For those willing to invest more for greater gains, a full system would be the next logical step.

Details:

Great condition slightly used Arrow slip on that I took off of my 2024 790 Adventure, Comes with baffle, mounting hardware, heat wrapped Adventure.

part #: 71904ak prices

• $493.65-$567.76

specifications cyclemufflermo:

• for models: Adventure
• for makes: Ktm
• for years: 2019-2026
• brand: Arrow
• mpn: 71904ak
• mounting style: Slip-on
• type: Muffler
• machine type: Street Motorcycle
• manufacturer warranty: 2 Years
• color: Black
• vintage part: No
• placement on vehicle: Exhaust
• performance part: Yes

offer cyclemufflermo:

• sold: 0
• options: Ship-to-home
• started: February 8, 2026
• availability: In Stock
• best offers: True
• quantity: 1

shipping cyclemufflermo:

• carrier: UPS
• cost: $41.05
• class: Standard
• type: Calculated
• transit: 5-12 Days
• service: UPS Ground

payments cyclemufflermo:

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

returns cyclemufflermo:

• policy: No Returns

seller cyclemufflermo:

• # reviews: 20
• city: Columbia, South Carolina
• rating: 100.0%

general cyclemufflermo:

• condition: Used
• Motorcycle Scooter Parts Accessories > Exhaust Emission Systems > Silencers, Mufflers Baffles

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