Universal Parts GY6 125/150cc Front Exhaust Header Pipe

Reliable Exhaust Flow: GY6 125/150cc Front Header Pipe

Replace your rusted or cracked header with the Universal Parts GY6 Front Exhaust Pipe. Engineered specifically for "Sport Style" 125cc and 150cc GY6 engine platforms, this 15-inch head pipe is a direct-fit replacement designed to restore proper backpressure and exhaust scavenging. Whether you are performing a stock repair or prepping for a custom muffler install, this pipe provides the structural integrity needed to withstand the high thermal stress of air-cooled 4-stroke engines.

Technical Performance Features

• Sport-Style Geometry: Specifically contoured for "Sport" body styles, providing optimal ground clearance and alignment with side-mounted mufflers.
• High-Heat Steel Construction: Built from heavy-gauge steel to resist the cracking and thinning caused by constant heating and cooling cycles.
• Standard 2-Bolt Flange: Features a 50mm head bolt spacing, ensuring a secure, leak-free seal against the cylinder head exhaust port.
• Direct OEM Replacement: A cost-effective solution for common Chinese-manufactured scooters that utilize the 152QMI or 157QMJ engine architecture.

Comprehensive Fitment Guide

This front pipe is a standard fit for 125cc-150cc GY6 "Sport Style" scooters, including:

Technical Specifications

• Approximate Length: 15 Inches
• Inner Diameter (ID): 18.5mm
• Bolt Spacing (Head): 50mm
• Bolt Spacing (Muffler): 69mm

Mechanic's Note: A leaking header pipe can cause "popping" on deceleration and lead to burnt exhaust valves.

Installation Tip: Never reuse an old exhaust gasket. Essential Hack: Always install a new Copper Exhaust Gasket and apply a small amount of anti-seize to the head studs to prevent them from snapping during future maintenance!

SKU: 164-17
Vendor: Universal Parts