YOXUFA Exhaust Header Muffler 420cc Replacement Kit — Fits Predator/GX Engines, Heat-Shield & Gasket

This replacement muffler and header kit provides a durable, ready-to-install exhaust for mini bikes, go-karts, lawn equipment and other small OHV engines. Built with reinforced welds and supplied with a gasket, screws, tie straps and heat-shield tape, it targets common Predator and clone engine mounts. Before buying, check the 50mm (1.96") mounting hole spacing to confirm fitment.

Will this exhaust fit my Predator or GX-series engine?

The YOXUFA 420cc muffler is compatible with Predator 301cc (8hp) and Predator 420cc (13hp) engines and various GX models including GX240, GX270 and GX390. It also fits certain clone engines like Briggs-style 1450 305cc and Lifan LF190F-BQ type units when the mounting dimensions match.

• Compatible models: Predator 301cc/420cc, GX240, GX270, GX390.
• Also works with some Briggs-style 1450 305cc and Lifan LF190F-BQ clones.
• Critical measurement: mounting hole spacing 50mm (1.96").
• Not compatible if your engine uses 46mm mounting spacing.

How easy is installation and what hardware is included?

Installation is straightforward for anyone comfortable with basic small-engine maintenance. The kit arrives with the parts needed to mount the exhaust and protect nearby surfaces, reducing the need for additional purchases.

• Included: exhaust header/muffler assembly, gasket, two screws and matching nuts.
• Comes with heat-shield tape to protect legs and nearby components from heat.
• Four cable ties and a small wrench are provided for routing and fastening.
• Welding and construction are reinforced to resist cracking under vibration.

What materials and construction quality should I expect?

This muffler uses welded steel construction with attention to joint strength to limit breakage under normal use. The finish and weld beads are designed for durability in recreational and light commercial applications.

• Robust welds intended to withstand vibration common to mini bikes and go-karts.
• Steel header and body for heat tolerance and longevity.
• Heat-shield tape included to reduce radiant heat at contact points.
• Supplied gasket helps ensure a proper seal at the exhaust flange.

Who is this for? This YOXUFA 420cc exhaust header muffler is aimed at DIY mechanics, hobbyists and small-vehicle owners who need a rugged replacement for worn, damaged or missing mufflers on Predator and compatible clone engines. It suits mini bike and go-kart restorations, lawn and garden equipment repairs, and small-engine performance refreshes where a 50mm flange spacing is present. Verify mounting hole distance and engine compatibility before ordering to ensure a correct fit.