Which is the best choice for a Performance Exhaust System for your Kawasaki KLX110

Selecting the ideal exhaust system for your Kawasaki KLX110 can significantly impact your bike’s performance, sound, and overall riding experience. The best choice comes down to finding the perfect balance between enhanced torque and horsepower, straightforward installation and tuning, your preferred exhaust note, and the availability of necessary jetting kits. This guide will explore various exhaust options, focusing on how they meet these key factors to help you make an informed decision for your ride. 

1. Pro Circuit T-6 System with Carbon Cap (0122011F)

• Performance (Torque & Horsepower): The T-6 is designed with both torque and horsepower gains in mind. Pro Circuit is known for their high-performance systems, and the T-6 often provides a balanced power curve, making it a solid choice for trail and track.
• Ease of Jetting & Availability of Jetting Kits: Pro Circuit systems generally require slight tuning for optimal performance. Jetting kits specifically designed for this model should be available from Pro Circuit or aftermarket suppliers.
• Sound Quality: The T-6 has a deep, aggressive tone but maintains good sound control with the carbon cap, which can help keep sound levels in check while providing a robust exhaust note.
• Stealth Sound: The T-6 may not be the quietest option but includes a removable spark arrestor and muffler insert for reducing noise if desired.
• Ease of Installation: The T-6 system is relatively easy to install, and Pro Circuit includes detailed installation instructions.

• Pros: Balanced power and sound; sturdy build with carbon fiber cap; moderate weight.

• Cons: Sound may still be louder than some other options even with inserts.

2. FMF PowerCore IV System (042002)

• Performance (Torque & Horsepower): The FMF PowerCore IV is tuned for strong low- to mid-range torque, which is great for technical off-road riding. FMF focuses on maximizing torque in their mini-bike exhaust systems, which might make this a good choice if you want torque over peak horsepower.
• Ease of Jetting & Availability of Jetting Kits: FMF systems are generally compatible with widely available jetting kits, and tuning is usually straightforward.
• Sound Quality: The PowerCore IV has a noticeable, throaty exhaust sound, popular for its classic FMF tone that riders appreciate. However, it’s not the quietest system.
• Stealth Sound: With the optional Quiet Core insert, this system can be quieter, though still a bit more noticeable than stock.
• Ease of Installation: Installation is usually simple, as FMF designs their systems to fit easily with OEM hardware.

• Pros: Excellent low- and mid-range torque; classic FMF sound; good fitment; tuning support.

• Cons: Slightly louder than stock; Quiet Core insert required for stealth sound.

3. FMF Factory 4.1 Mini System with Stainless Steel Header (042381)

• Performance (Torque & Horsepower): The Factory 4.1 is FMF’s higher-end system, offering a good balance of horsepower and torque, with a noticeable gain in both mid- and top-end power. It is a top choice for those looking for high performance on a small displacement bike.
• Ease of Jetting & Availability of Jetting Kits: Jetting can be a bit more specific with this system due to its free-flowing nature, but FMF offers support and recommendations for tuning.
• Sound Quality: Known for its race-oriented sound, the Factory 4.1 is louder and has a more aggressive tone. FMF's Factory 4.1 offers a clear, powerful exhaust note that is designed to sound sporty.
• Stealth Sound: The Factory 4.1 is louder, even with the insert, so it might not be ideal if you want to keep noise levels low.
• Ease of Installation: The Factory 4.1 is straightforward to install and includes necessary mounting hardware.

• Pros: High performance, race-focused sound, and noticeable horsepower gains; solid construction.

• Cons: Louder than other systems; may require fine-tuning for optimal jetting; higher price.

4. BBR D3 Exhaust System (240-KLX-1131)

• Performance (Torque & Horsepower): The BBR D3 is known for providing good gains in low- and mid-range power, with a focus on adding torque rather than peak horsepower, which is ideal for trail riding and technical riding.
• Ease of Jetting & Availability of Jetting Kits: BBR typically provides jetting guidance, and this exhaust should work well with standard jetting kits.
• Sound Quality: The D3 has a distinct, deep sound but tends to be quieter than the FMF Factory 4.1. Riders often find it strikes a good balance between performance sound and reasonable noise levels.
• Stealth Sound: While it’s not as quiet as stock, it’s generally less noticeable than louder racing systems like the Factory 4.1. BBR includes a spark arrestor to help manage sound output.
• Ease of Installation: BBR products are designed for straightforward installation, and the D3 is no exception. It’s a bolt-on system with user-friendly fitment.

• Pros: Good balance of low- to mid-range torque, reasonable sound, and ease of installation.

• Cons: May not offer as much top-end performance as FMF's Factory 4.1; not as widely available in some regions as FMF or Pro Circuit.

Recommendations by Priority:

• Best Torque & Low-Range Power: FMF PowerCore IV System
• Best Horsepower (Top-End Performance): FMF Factory 4.1 Mini System
• Best Sound (Aggressive Tone): FMF Factory 4.1 Mini System
• Best Stealth Sound (Quieter Option): BBR D3 Exhaust System or Pro Circuit T-6 System with Carbon Cap
• Ease of Installation & Tuning: BBR D3 Exhaust System and Pro Circuit T-6

Final Verdict

If you prioritize a strong torque with a balanced sound, FMF PowerCore IV is likely your best option. For maximum horsepower with an aggressive sound, the FMF Factory 4.1 will give you top-end gains. If you prefer a quieter, more discreet system without sacrificing too much performance, go with the BBR D3 or Pro Circuit T-6 for ease of installation and reasonable noise management.

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Why Rejet Your Kawasaki KLX110 with the DYNOJET - 2162 - Jet Kit - Stage 1 ?

Rejetting your carburetor is essential when you want to get more performance out of your Pit Bike, especially after adding aftermarket parts like an exhaust or intake. The Dynojet Stage 1 Jet Kit (2162) is designed specifically for the Kawasaki KLX110 and helps improve your bike’s acceleration, low-end torque, top-end power, and overall throttle response. Here’s a closer look at what this kit can do for your bike:

Benefits of the Dynojet Jet Kit 2162

1. Increased Acceleration & Low-End Torque: Stage 1 jetting improves throttle response and gives you more power right from the start, making it perfect for trails and tight corners.
2. Improved Top-End Power & Over-Rev: With better fuel delivery, you’ll experience more sustained power at high RPMs, providing that extra kick at top speed.
3. Enhanced Throttle Response: The kit optimizes the air/fuel ratio for smoother transitions and faster response at all RPMs.

Easy Installation & Adjustability

• Installation: This kit is designed for easy, straightforward installation, typically requiring only basic tools and no major modifications. With the included step-by-step instructions, most riders can install the kit in a couple of hours.
• Adjustability: The Dynojet Kit 2162 includes multiple jets to fine-tune your setup based on riding conditions and modifications. It’s versatile enough to match the bike’s performance to your needs, whether you’re riding at different altitudes or with other upgrades.

In summary: The Dynojet Stage 1 Jet Kit (2162) provides noticeable performance gains and is an ideal upgrade to complement an aftermarket exhaust or intake on the KLX110. With this kit, you’ll enjoy improved acceleration, torque, and top-end power, with an easy installation process and adjustability to suit your riding style.

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