Fitment: The expansion chamber exhaust kit is compatible with 2 stroke 48cc 49cc 50cc 60cc 66cc 80cc YD100 BT100 Zeda80 YZ80 2-Stroke Engines Gas Motorized Bicycle Motor Bikes Feature: 1. Durable and long service life. 2. A perfect aftermarket replacement. 3. Easy to install. Size: Mounting Hole Distance: 40mm/1.57 Inch, Total length: 470mm/18.5 Inch. Package Contents: 1 x Muffler Exhaust Pipe, 1 x Gasket, 1 x Nut kits，1 x Spark Plug Note: Please check as much as possible to make sure the item is the one that you need. FVRITO Performance Exhaust Muffler Expansion Chamber Pipe Silencer Gasket for 2 Stroke 50cc 66cc 80cc Engine Gas Motorized Bicycle Motor Bike Silver
Specification:
Product Name :Motorized Exhaust Muffler
Condition : Brand New
Color : Silver
Material : Metal
Size:
Mounting Hole Distance: 40mm/1.57 Inch
Total length: 470mm/18.5 Inch

Features:
1. Durable and long service life.
2. A perfect aftermarket replacement.
3. Easy to install.

it's Performance Head Exhaust, If feeling it's too loud you can add a muffler to the end of it.
Fitment:
for 2 stroke 49cc 50cc 66cc 80cc Engines Motorized Bicycle Bikes

Package Contents:
1 x Muffler Exhaust Pipe
1 x gasket
1 x Spark Plug
1 x nut kits

Note:
-We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need.
-All dimensions are measuBlue by hand, Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm).
that you need.