EOPOAYI 1.1 Inch Motorcycle Slip on Muffler for 125cc 110cc

EOPOAYI's 1.1-inch slip-on muffler is a durable, low-tone replacement exhaust designed to fit many 110cc–125cc pit bikes, mini bikes, ATVs, go-karts and a range of small OHV engines.

This compact slip-on muffler provides a straightforward aftermarket upgrade for riders and small-engine owners who need a reliable, quieter exhaust option without major modification. Built from corrosion-resistant metal and engineered for broad cross-compatibility, it targets Chinese 4-stroke pit bikes, common mini bike and go-kart models, and many popular small engines used in ATVs, generators and lawn equipment.

Which machines will this muffler fit?

The EOPOAYI 1.1" muffler is designed to fit a wide set of small-engine and off-road machines. It works with many 50cc–125cc Chinese 4-stroke pit bikes, select mini bikes and a number of ATV and go-kart models; it also matches several small OHV engine families.

• Fits 110cc and 125cc pit bikes (e.g., SSR, TTR, some CRF50F applications).
• Compatible with many ATV models from Taotao, Coolster, Icebear, Vitacci and Kazuma.
• Works with small OHV engines like Predator, GX160/GX200, and select Harbor Freight/Powerhorse units.
• Replacement option for many mini bikes and go-karts (Coleman CT200U, Massimo, Baja MB series, etc.).

How does it change sound and performance?

This muffler provides a lower, more controlled tone compared with a straight pipe while reducing overall decibel output. It is engineered to preserve engine breathing without excessive backpressure, delivering a sensible balance between sound suppression and usable engine response.

• Produces a deeper, subdued exhaust note versus high-decibel straight pipes.
• Reduces perceived loudness while maintaining practical engine performance.
• Designed to avoid excessive backpressure that would hurt throttle response.
• Works as a drop-in slip-on—no complex internal modifications required.

What materials and build quality should I expect?

EOPOAYI uses robust metal construction with surface treatments to resist deformation and slow corrosion. The muffler is designed for off-road use, where durability against vibration, heat and rough handling matters.

• Constructed from high-strength metal for impact and heat resistance.
• Surface processing reduces rust while keeping a clean appearance.
• Rugged welds and mounting points for reliable, long-term service.
• Compact 1.1" inlet suited to common small-engine headers and adapters.

How easy is installation and what should I check before buying?

Installation is typically simple: it's a slip-on design meant to replace stock mufflers using the vehicle's existing mounts or standard clamps. Before ordering, verify your header pipe diameter and model compatibility to ensure a correct fit without extensive adapters.

• Slip-on fit for quick swap using existing brackets or a clamp.
• Confirm inlet diameter (1.1") and model compatibility lists before purchase.
• May require a short adapter or minor bracket adjustment on some machines.
• Inspect clearance and heat routing when installing on custom frames.

Who is this for? Riders, hobbyists and small-engine owners who want a rugged, lower-tone replacement muffler for pit bikes, mini bikes, go-karts, ATVs and numerous small OHV engines will find this EOPOAYI slip-on suitable. It’s aimed at people who need broad compatibility, simpler installation and a quieter, durable exhaust option for off-road and utility machines—without complex tuning or major fabrication.