Before testing this exhaust system, I never realized how much a quality upgrade could transform your KLX110’s performance. I mounted the YC Yier 38mm 1.5″ Racing Exhaust Pipe and Muffler Full on my mini bike, and the difference was instant. It boosted power noticeably and gave the bike that deep, throaty sound usually reserved for bigger bikes. Plus, it fits a range of 70cc to 200cc dirt bikes—making it versatile and worth every penny.
During my rides, I appreciated how this complete system improved throttle response and overall acceleration, especially after I removed the pipe guard for that raw, racing sound. Its durable build and full-length design mean it holds up under tough conditions, and the size makes installation straightforward. After comparing it to other options, this exhaust stands out because it combines a realistic racing sound, reliable performance, and an excellent price point. Honestly, it’s a game-changer for enhancing your KLX110’s look and feel—consider it my top pick for your upgrade.
Top Recommendation: YC Yier 38mm 1.5″ Racing Exhaust Pipe and Muffler Full
Why We Recommend It: This system offers a full, one-piece setup from head to tail, providing a complete upgrade that improves sound and performance. Its durable construction, 635mm pipe length, and 255mm muffler give it a balanced, aggressive tone, reminiscent of big CRF bikes. Compared to other options, it’s versatile across many 70-200cc bikes, making it a smart, value-packed choice that truly enhances throttle response and power.
YC Yier 38mm 1.5″ Racing Exhaust Pipe and Muffler Full
- ✓ Deep throaty sound
- ✓ Solid one-piece build
- ✓ Fits well on KLX110
- ✕ Slightly loud for some
- ✕ May require jetting adjustment
| Exhaust Pipe Diameter | 38mm (head pipe), 45mm (collector pipe) |
| Exhaust Pipe Length | 635mm (25 inches) |
| Muffler Length | 255mm (10 inches) |
| Compatibility | Fits 70cc to 200cc dirt bikes, including XR70, CRF70F, and similar Chinese brands |
| Material | Steel construction with removable pipe guard |
| Design Features | Complete one-piece system with deep throaty sound and improved airflow |
Instead of the usual snazzy chrome finishes or flashy branding, what immediately catches your eye with this YC Yier exhaust is its robust, one-piece construction. It feels solid in your hands, and you notice the 38mm head pipe and 45mm eye-to-eye measurements give it a substantial, beefy look that promises serious performance.
When you install it on your KLX110, the first thing you notice is how well it fits—no awkward gaps or needing to tinker endlessly. The length of the exhaust pipe, about 25 inches, hits that sweet spot for clearance without feeling bulky.
The muffler, at 10 inches, adds a nice balance, ensuring it doesn’t hang too low or interfere with your riding.
Starting up your bike after the install, the deep, throaty sound immediately stands out. It’s a big step up from the stock pipe, giving your mini that aggressive tone of a bigger CRF.
The sound isn’t just loud; it’s rich and satisfying, making every ride feel more adrenaline-pumping. Plus, the removable pipe guard makes maintenance or adjustments easier, which is a nice touch.
Performance-wise, you’ll feel a slight boost in power and throttle response, especially if you’ve done some engine mods. It breathes well with your modifications, yet still sounds great on a stock bike.
The price point is reasonable considering the full system you’re getting, which looks durable enough to last through rough rides.
Overall, this exhaust combines a rugged build with a fantastic sound profile, making your mini feel more like a real dirt bike. It’s a straightforward upgrade that delivers on both looks and performance without any complicated installation.