LEIMO KPARTS Carbon-Fiber-Style Universal Slip-On Muffler 365mm — 38–51mm Inlet, Removable DB Killer

LEIMO KPARTS carbon-fiber-style universal slip-on muffler is a lightweight, 365mm racing silencer with a removable DB killer that fits 38–51mm inlet pipes.

This slip-on silencer pairs an aluminum body with stainless-steel internals to cut weight and add a sportier note to dirt bikes, street bikes, scooters, ATVs and quads. Pre-welded adapter hardware and included clamps make it broadly compatible with 38–51mm exhaust outlets, while the movable DB killer lets you tune sound level without swapping parts.

What does this muffler change about performance and weight?

The muffler reduces overall system mass and may improve throttle response by streamlining exhaust flow compared with bulky stock cans. It’s built from lightweight aluminum and stainless steel for corrosion resistance while keeping total weight down for handling benefits.

• Overall length: 365 mm for compact packaging
• Materials: aluminum outer shell with stainless-steel connector and internals
• Reduced mass compared with many factory mufflers
• Stainless welding on the adapter for durable fitment

How loud is it and how do I adjust the sound?

Noise level is adjustable thanks to the removable DB killer included with the muffler. Leave the DB killer installed for quieter operation and rein it in where regulations or comfort demand it, or remove it for a noticeably louder, sportier exhaust tone.

• Comes with a movable DB killer for quick sound changes
• DB killer installed for reduced decibel output
• Removal yields a more aggressive, free-flowing note
• Springs and hooks included for secure DB killer mounting

Will this fit my motorcycle or ATV?

Yes—its universal adapter accommodates pipes from 38 mm to 51 mm (1.5"–2") so it works on a wide range of bikes and small off-road machines. The factory-installed adapter simplifies fitment, and clamps are supplied to secure the slip-on connection.

• Pre-installed stainless-steel adapter fits 38–51 mm outlets
• Included mounting clamp and adaptor speed installation
• Compatible with dirt bikes, street bikes, scooters, ATVs and quads
• Slip-on style: minimal modification required

Is installation difficult and what’s in the box?

Installation is straightforward for anyone comfortable with basic exhaust work; the package contains all primary hardware so no custom fabrication is normally required. No printed instructions are included, but the adapter is pre-mounted at the factory to reduce assembly steps.

• Package includes: muffler, DB killer, springs, hooks, secure clamp and universal adapter
• Adapter pre-installed at the factory for convenience
• No printed instructions included—basic mechanical skills recommended
• 90-day manufacturer warranty for peace of mind

Who is this for: Riders who want a lighter, sportier-looking exhaust with an adjustable sound profile without major fabrication. It’s ideal for enthusiasts upgrading mid-range and small-displacement machines—dirt bikes, scooters, ATVs, commuter and sport bikes—seeking improved aesthetics, reduced weight and a customizable exhaust note. If you need a direct-fit, bolt-on replacement with a carbon-fiber finish and the option to toggle noise levels, this LEIMO KPARTS universal slip-on muffler is built for that purpose.