MUFFLERS As you know, the kind of pipe you install makes a significant difference in the performance of your pattern plane.   In Pattern, both weight and power are primary concerns.  Striking the proper balance between these two is crucial.   On this page, you'll find a great selection of the very best pipes and mufflers for your plane.  Choose from ES Design carbon fiber pipes, NMP, & Hatori aluminum mufflers.  Read the specs given for each one.  If you need help, feel free to call the Technical Assistance line at 1-406-259-9004.  The lines is open Monday thru Saturday, 10-6 MST.

KELCO Pitts Muffler for YS Engines A Pitts-style exhaust designed to fit the YS 120 through 170 engines. Constructed of 6061 T-6 Aluminum, it is strong and still lightweight. YS Pitts Muffler  KELYSPM1   $94.50

Hatori Mufflers

Go to Hatori Headers

	HATORI 720 Muffler (Replaces HATORI 640 muffler) 30mm X 129mm barrel 4-Cycle 63-81 - YS 63, 70 & OS 70-81       HAT720  $79.97
	HATORI 725 Muffler 40mm X 165mm barrel 4-Cycle, YS 91 thru 160        HAT725  $115.99
Hatori 821Muffler and Header	HATORI 821 Muffler 40mm X 235mm barrel 4-Cycle, YS 120 thru 170        HAT821  $174.99
	HATORI 824 Muffler 40mm X 235mm barrel 4-Cycle, OS FS-200S-FI        HAT824  $139.87

 

VITON O-Ring for Hatori  For Hatori Air Cooled Header-Muffler Connections 3-Pack CHMHATOR3 $6.95

 

Hatori178 For 821 and 725 mufflers Hat178   $3.99

 

8 Racing Muffler and Header STR1 $174.00	8 Racing Bolt-On Muffler STR2 $98.00