Answering the common buyer question: which twin exhaust options deliver better throttle response, deeper sound, and reliable durability for pit bikes in the 50cc–125cc range? This guide highlights five top picks, ideal for riders seeking a louder, more responsive exhaust while considering fitment and compatibility. The top picks skew toward pit bikes based on BBR-style perimeter frames, XR50/CRF50 platforms, and popular Chinese-clone mini bikes. Each product is best for riders who want a balanced blend of sound, power boost, and straightforward installation.
Summary at a glance: the best twin exhaust choices for pit bikes
| Product | Best For | Notable Benefit |
|---|---|---|
| Black Twin Spar Exhaust (Kids ATV Parts Inc) | BBR-perimeter frame pit bikes | Direct fit for perimeter frames with modifications on stock bikes |
| FVRITO Exhaust Pipe Kit | 70cc–125cc Chinese pit bikes | Full integrated system with durable stainless construction |
| YC Yier 38mm Racing System | CRF/XR-style mini bikes | Complete one-piece pipe with deep sound |
| FLYPIG 28mm Exhaust | Wide range of Chinese brands | Stainless build with broader compatibility |
| High Performance Big Bore Exhaust (Kids ATV Parts Inc) | XR50/CRF50 clones | Deep throttle response and robust tone |
The following sections describe each product in detail, with who it’s best for, why it was selected, and a practical caution if applicable. Each entry uses clear, comparison-friendly language to help you decide quickly.
Black Twin Spar Exhaust Pipe for SDG SSR 125cc Pit Bike
Best for perimeter-frame pit bikes seeking a bolt-on upgrade with a distinctive D-section design. The exhaust is described as a brand-new, complete high-quality mini-bike system that fits BBR perimeter-frame pit bikes with modification on stock frames. It also supports modified Honda XR50/CRF50 platforms, though it will not fit stock Honda XR/CRF50 without alteration. This makes it a solid choice for riders building a perimeter-frame pit bike that wants a robust, aggressive exhaust note and improved clearance for the D-section styling.
Who it’s best for: riders with BBR-style perimeter frames who are comfortable with frame modification and want a deep exhaust tone. Why selected: it matches the twin-spar D-section aesthetic and offers a full system upgrade. Caution: installation may require frame modification on stock bikes, which may affect warranty or structure if not done carefully.
FVRITO Exhaust Pipe Kit for 70cc–125cc Pit Bikes
This kit is designed as a complete full exhaust system from the manifold to the tailpipe. It uses a double-layer stainless steel construction for durability and vibration absorption, while delivering a deep, resonant exhaust note. It’s compatible with a broad range of Chinese-brand pit bikes, including but not limited to SSR, TAotao, Roketa, Coolster, and similar 70cc–125cc models.
Who it’s best for: riders with Chinese-brand pit bikes seeking a full system upgrade with enhanced sound and performance. Why selected: the kit emphasizes durability and a robust sound while supporting many popular models. Caution: some brands listed may require additional adapter fittings depending on exact model year and engine type.
YC Yier 38mm Racing Exhaust System for CRF70F/XR70
Best for CRF/XR-style mini bikes that need a complete one-piece exhaust from head pipe to tail section. It offers a deep throaty sound and better breathing for engines with modifications, while maintaining compatibility with stock setups for non-intrusive upgrades. The pipe length and muffler measurements are provided to help gauge fitment.
Who it’s best for: riders who want a complete, single-piece system with a prominent exhaust note on CRF/XR-style minis. Why selected: it’s designed to maximize engine breathing and sound without requiring multiple separate components. Caution: measurement alignment is important to ensure clearance with footpegs and rear shock components.
FLYPIG 28mm Dirt Bike Exhaust Muffler for 50cc–125cc
Best for a broad range of Chinese-brand mini bikes with a 28mm exhaust pipe. This muffler is built from stainless steel to maintain structural integrity at high temperatures and to deliver a deeper exhaust note. It’s designed to fit many brands beyond the CRF/XR family, making it a flexible upgrade for riders who own multiple bikes or experiment with different models.
Who it’s best for: riders wanting broad compatibility and a robust, deeper exhaust sound on many Chinese-brand mini bikes. Why selected: it offers a practical balance of performance and flexibility. Caution: Not all models listed may fit perfectly without adapters; verify engine size and mounting points before purchase.
High Performance Big Bore Exhaust (XR50/CRF50 Clone)
This is a complete one-piece exhaust system designed to support a higher performance profile for XR50/CRF50 clones. It aims to deliver a deeper, throaty tone and improved throttle response across modified engines, especially when paired with other performance enhancements.
Who it’s best for: riders seeking a more aggressive exhaust tone and enhanced throttle response on XR50/CRF50 clones. Why selected: it emphasizes a complete system with a strong note and potential power gains for compatible models. Caution: the upgrade may require careful tuning to avoid excessive backpressure on non-modified engines.
Buying Guide
Key considerations when choosing a twin exhaust for pit bikes:
- Bike compatibility: Confirm engine size (70cc–125cc), frame style (perimeter vs. stock), and mounting points before buying.
- Complete system vs. header-only: Full systems simplify installation and ensure better exhaust flow, while header-only options may need additional components.
- Durability and materials: Stainless steel is preferred for corrosion resistance and heat tolerance; double-wall construction helps with vibration suppression.
- Sound and tuning: A deeper exhaust tone is common with bigger bore pipes; consider how sound may affect riding partners and regulations in your area.
- Installation ease: Some kits require frame modification or custom fittings. Weigh the complexity against your mechanical comfort level.
FAQ
- Q: Will these exhausts fit stock XR50 or CRF50 bikes? A: Some options fit modified XR50/CRF50 or perimeter-frame bikes with adjustments. Check the product notes for fitment details.
- Q: Do full exhaust systems improve performance on stock engines? A: They can improve exhaust flow and throttle response, especially on modified engines, but results vary by bike and setup.
- Q: Are these exhausts legal for street use? A: These products are designed for off-road or track use. Street legality depends on local regulations and may require additional components.
- Q: Can I install these without professional help? A: Many can be installed by motivated hobbyists, but some models require frame modifications or precise alignment. Follow manufacturer instructions.
- Q: How do I choose between a 28mm and 38mm pipe? A: A larger bore (38mm) generally provides greater flow for larger engines or heavily modified bikes, while 28mm suits many factory-sized engines with simpler setups.
- Q: Is a full exhaust system worth the extra cost? A: For riders seeking a noticeable sound and performance boost, a full system often delivers a more consistent upgrade than a single muffler.